[ { "sku": "305701-C-2Z", "brand": "SKF", "manufacturer_designation": "305701 C-2Z", "series": "3057-series", "type": "cam_roller", "d_mm": 12, "D_mm": 35, "B_mm": 15.9, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 9.04, "static_load_kN": 4.555, "fatigue_load_limit_kN": 0.193, "weight_g": 78, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 35 mm outside diameter is the crowned track contact surface, the 12 mm bore takes the pin and the 15.9 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 9.04 kN and C0 4.555 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.98 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.193 kN against a 12 mm bore gives 0.75 kN per mm of bore, and the 9,500 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 3.8 kN dynamically and F0r 5.4 kN statically; because the permissible static load is the lower of F0r and C0, the 4.555 kN figure governs static selection here the 15.9 mm width carries 0.57 kN per mm, the ring section measures 11.5 mm between bore and track surface, and 78 g over a 35x15.9 mm envelope is 0.140 g per mm2 of projected area for medium-high-speed cam duty the 12 mm bore and 15.9 mm width are those of the 32 series ball bearing at the same size code, while the 35 mm outside diameter is 3 mm larger than that bearing's 32 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter at 12 mm bore this is the smallest cam roller in the catalogue chapter, the band chosen for compact cam drives, light indexing units and small transfer mechanisms where the 35 mm track diameter is already the largest envelope that fits 3057.. C is the flat-surface counterpart of 3058.. C; it presents the full 15.9 mm width to a flat track, which raises the contact area but leaves no margin for track angularity double row cam rollers use two cages — a ribbon-type ball-centred stamped steel cage and a snap-type ball-centred cage in PA66, glass fibre reinforced — so high-temperature duty must respect the polyamide cage's temperature ceiling the running surface here is cylindrical (flat), so the contact geometry assumes a well-aligned track; any angular misalignment between the roller axis and the guide surface moves the load straight onto the ring edges typical duties are food processing index conveyors, packaging machine timing cams and glass handling line guides this size is regularly specified for food processing index conveyors and packaging machine timing cams, where the 35 mm ring rides the cam profile and the 12 mm bore takes a g6 pin the two ball rows and the 15.9 mm wide ring make glass handling line guides a natural fit; the 78 g mass keeps the follower inertia low enough for rapid oscillating cam motion the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment like every double row cam roller the design prefers radial and tilting load; sustained axial thrust on the outer ring is outside the intended duty and shortens service life", "applications": [ "paper converting web guides", "food processing index conveyors", "textile machinery cam gear", "packaging machine timing cams" ], "failure_modes": [ "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment", "like every double row cam roller the design prefers radial and tilting load; sustained axial thrust on the outer ring is outside the intended duty and shortens service life", "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows", "relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke" ], "pitfalls": [ "like every double row cam roller the design prefers radial and tilting load; sustained axial thrust on the outer ring is outside the intended duty and shortens service life", "the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment", "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows" ], "faq": [ { "q": "What are the dimensions of 305701-C-2Z?", "a": "305701-C-2Z is a double row cam roller with a cylindrical (flat) running surface with a 12 mm bore, 35 mm outside diameter and 15.9 mm overall width. The 35 mm ring is the track contact surface and the 12 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305701 C-2Z is the SKF catalogue designation: the 3057 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305701-C-2Z?", "a": "The basic dynamic load rating C is 9.04 kN and the basic static load rating C0 is 4.555 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 3.8 kN and F0r 5.4 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305701-C-2Z", "305701 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 9500, "max_rpm": 9500 }, { "sku": "305702-C-2Z", "brand": "SKF", "manufacturer_designation": "305702 C-2Z", "series": "3057-series", "type": "cam_roller", "d_mm": 15, "D_mm": 40, "B_mm": 15.9, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 10.1, "static_load_kN": 5.5, "fatigue_load_limit_kN": 0.263, "weight_g": 100, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 40 mm outside diameter is the crowned track contact surface, the 15 mm bore takes the pin and the 15.9 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 10.1 kN and C0 5.5 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.84 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.263 kN against a 15 mm bore gives 0.67 kN per mm of bore, and the 9,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 5.85 kN dynamically and F0r 8.5 kN statically; because the permissible static load is the lower of F0r and C0, the 5.5 kN figure governs static selection here the 15.9 mm width carries 0.64 kN per mm, the ring section measures 12.5 mm between bore and track surface, and 100 g over a 40x15.9 mm envelope is 0.157 g per mm2 of projected area for medium-high-speed cam duty dimensionally this is a 32 dimension series of double row angular contact ball bearings at 15 mm bore with a thick-walled outer ring pushed out to 40 mm (the base bearing measures 35 mm); the additional ring wall is what resists bending when the roller is unsupported in a housing at 15 mm bore this size balances load capacity against envelope: 10.1 kN of dynamic capacity in a 40 mm ring, with the 15.9 mm width still narrow enough for compact cam plates 3057 is the flat-running-surface double row cam roller: the same 30 deg double row angular contact basis as 3058, but with a cylindrical (flat) outer ring instead of a crowned one the 30 deg contact angle of the two ball sets is what gives the double row roller its tilting stiffness — under a moment load the rows react in opposite directions instead of unloading one edge of the ring the 2Z suffix means sheet steel shields on both sides rather than elastomeric seals: they keep coarse debris out but will not retain a grease fill as tightly as the NBR contact seals of the single row roller typical duties are textile machinery cam gear, food processing index conveyors and packaging machine timing cams this size is regularly specified for textile machinery cam gear and food processing index conveyors, where the 40 mm ring rides the cam profile and the 15 mm bore takes a g6 pin the two ball rows and the 15.9 mm wide ring make packaging machine timing cams a natural fit; the 100 g mass keeps the follower inertia low enough for rapid oscillating cam motion relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "applications": [ "packaging machine timing cams", "textile machinery cam gear", "glass handling line guides", "cam drives and indexing mechanisms" ], "failure_modes": [ "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment", "like every double row cam roller the design prefers radial and tilting load; sustained axial thrust on the outer ring is outside the intended duty and shortens service life", "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows", "relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke" ], "pitfalls": [ "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows", "relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke", "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges" ], "faq": [ { "q": "What are the dimensions of 305702-C-2Z?", "a": "305702-C-2Z is a double row cam roller with a cylindrical (flat) running surface with a 15 mm bore, 40 mm outside diameter and 15.9 mm overall width. The 40 mm ring is the track contact surface and the 15 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305702 C-2Z is the SKF catalogue designation: the 3057 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305702-C-2Z?", "a": "The basic dynamic load rating C is 10.1 kN and the basic static load rating C0 is 5.5 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 5.85 kN and F0r 8.5 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305702-C-2Z", "305702 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 9000, "max_rpm": 9000 }, { "sku": "305703-C-2Z", "brand": "SKF", "manufacturer_designation": "305703 C-2Z", "series": "3057-series", "type": "cam_roller", "d_mm": 17, "D_mm": 47, "B_mm": 17.5, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 13, "static_load_kN": 7.35, "fatigue_load_limit_kN": 0.315, "weight_g": 160, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 47 mm outside diameter is the crowned track contact surface, the 17 mm bore takes the pin and the 17.5 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 13 kN and C0 7.35 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.77 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.315 kN against a 17 mm bore gives 0.76 kN per mm of bore, and the 8,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 9.3 kN dynamically and F0r 13.4 kN statically; because the permissible static load is the lower of F0r and C0, the 7.35 kN figure governs static selection here the 17.5 mm width carries 0.74 kN per mm, the ring section measures 15.0 mm between bore and track surface, and 160 g over a 47x17.5 mm envelope is 0.195 g per mm2 of projected area for medium-high-speed cam duty dimensionally this is a 32 dimension series of double row angular contact ball bearings at 17 mm bore with a thick-walled outer ring pushed out to 47 mm (the base bearing measures 40 mm); the additional ring wall is what resists bending when the roller is unsupported in a housing at 17 mm bore this size balances load capacity against envelope: 13 kN of dynamic capacity in a 47 mm ring, with the 17.5 mm width still narrow enough for compact cam plates the 3057 prefix identifies the cylindrical running surface option of the double row cam roller, for guides and tracks that are machined and aligned accurately enough not to need the crown's misalignment tolerance because there are two ball rows, this roller accepts noticeably higher tilting moments than a single row cam roller of the same outside diameter; the trade is a larger section and a lower limiting speed the running surface here is cylindrical (flat), so the contact geometry assumes a well-aligned track; any angular misalignment between the roller axis and the guide surface moves the load straight onto the ring edges typical duties are glass handling line guides, cam drives and indexing mechanisms and woodworking machinery feed cams this size is regularly specified for glass handling line guides and cam drives and indexing mechanisms, where the 47 mm ring rides the cam profile and the 17 mm bore takes a g6 pin the two ball rows and the 17.5 mm wide ring make woodworking machinery feed cams a natural fit; the 160 g mass keeps the follower inertia low enough for rapid oscillating cam motion the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke", "applications": [ "tube and wire drawing guides", "glass handling line guides", "material handling lift tracks", "paper converting web guides" ], "failure_modes": [ "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment", "like every double row cam roller the design prefers radial and tilting load; sustained axial thrust on the outer ring is outside the intended duty and shortens service life", "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows", "relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke" ], "pitfalls": [ "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows", "the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment" ], "faq": [ { "q": "What are the dimensions of 305703-C-2Z?", "a": "305703-C-2Z is a double row cam roller with a cylindrical (flat) running surface with a 17 mm bore, 47 mm outside diameter and 17.5 mm overall width. The 47 mm ring is the track contact surface and the 17 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305703 C-2Z is the SKF catalogue designation: the 3057 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305703-C-2Z?", "a": "The basic dynamic load rating C is 13 kN and the basic static load rating C0 is 7.35 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 9.3 kN and F0r 13.4 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305703-C-2Z", "305703 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 8000, "max_rpm": 8000 }, { "sku": "305704-C-2Z", "brand": "SKF", "manufacturer_designation": "305704 C-2Z", "series": "3057-series", "type": "cam_roller", "d_mm": 20, "D_mm": 52, "B_mm": 20.6, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 16.5, "static_load_kN": 9.5, "fatigue_load_limit_kN": 0.4, "weight_g": 220, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 52 mm outside diameter is the crowned track contact surface, the 20 mm bore takes the pin and the 20.6 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 16.5 kN and C0 9.5 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.74 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.4 kN against a 20 mm bore gives 0.82 kN per mm of bore, and the 7,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 8.3 kN dynamically and F0r 12 kN statically; because the permissible static load is the lower of F0r and C0, the 9.5 kN figure governs static selection here the 20.6 mm width carries 0.80 kN per mm, the ring section measures 16.0 mm between bore and track surface, and 220 g over a 52x20.6 mm envelope is 0.205 g per mm2 of projected area for medium-high-speed cam duty the 20 mm bore and 20.6 mm width are those of the 32 series ball bearing at the same size code, while the 52 mm outside diameter is 5 mm larger than that bearing's 47 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter the 20 mm bore places this in the medium band where the thick-walled outer ring is deep enough to carry 16.5 kN without excessive edge stress on the track the 3057 prefix identifies the cylindrical running surface option of the double row cam roller, for guides and tracks that are machined and aligned accurately enough not to need the crown's misalignment tolerance because there are two ball rows, this roller accepts noticeably higher tilting moments than a single row cam roller of the same outside diameter; the trade is a larger section and a lower limiting speed the running surface here is cylindrical (flat), so the contact geometry assumes a well-aligned track; any angular misalignment between the roller axis and the guide surface moves the load straight onto the ring edges typical duties are packaging machine timing cams, glass handling line guides and cam drives and indexing mechanisms this size is regularly specified for packaging machine timing cams and glass handling line guides, where the 52 mm ring rides the cam profile and the 20 mm bore takes a g6 pin the two ball rows and the 20.6 mm wide ring make cam drives and indexing mechanisms a natural fit; the 220 g mass keeps the follower inertia low enough for rapid oscillating cam motion relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "applications": [ "textile machinery cam gear", "packaging machine timing cams", "food processing index conveyors", "glass handling line guides" ], "failure_modes": [ "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment", "like every double row cam roller the design prefers radial and tilting load; sustained axial thrust on the outer ring is outside the intended duty and shortens service life", "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows", "relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke" ], "pitfalls": [ "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke", "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life" ], "faq": [ { "q": "What are the dimensions of 305704-C-2Z?", "a": "305704-C-2Z is a double row cam roller with a cylindrical (flat) running surface with a 20 mm bore, 52 mm outside diameter and 20.6 mm overall width. The 52 mm ring is the track contact surface and the 20 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305704 C-2Z is the SKF catalogue designation: the 3057 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305704-C-2Z?", "a": "The basic dynamic load rating C is 16.5 kN and the basic static load rating C0 is 9.5 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 8.3 kN and F0r 12 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305704-C-2Z", "305704 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 7000, "max_rpm": 7000 }, { "sku": "305705-C-2Z", "brand": "SKF", "manufacturer_designation": "305705 C-2Z", "series": "3057-series", "type": "cam_roller", "d_mm": 25, "D_mm": 62, "B_mm": 20.6, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 18.6, "static_load_kN": 11.8, "fatigue_load_limit_kN": 0.5, "weight_g": 320, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 62 mm outside diameter is the crowned track contact surface, the 25 mm bore takes the pin and the 20.6 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 18.6 kN and C0 11.8 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.58 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.5 kN against a 25 mm bore gives 0.74 kN per mm of bore, and the 6,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 15.3 kN dynamically and F0r 21.6 kN statically; because the permissible static load is the lower of F0r and C0, the 11.8 kN figure governs static selection here the 20.6 mm width carries 0.90 kN per mm, the ring section measures 18.5 mm between bore and track surface, and 320 g over a 62x20.6 mm envelope is 0.251 g per mm2 of projected area for medium-speed cam duty the 25 mm bore and 20.6 mm width are those of the 32 series ball bearing at the same size code, while the 62 mm outside diameter is 10 mm larger than that bearing's 52 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter the 25 mm bore places this in the medium band where the thick-walled outer ring is deep enough to carry 18.6 kN without excessive edge stress on the track the 3057 designation marks the cylindrical running surface variant — a flat ring profile that suits precision machined guide rails and linear tracks rather than stamped or welded cam plates the 30 deg contact angle of the two ball sets is what gives the double row roller its tilting stiffness — under a moment load the rows react in opposite directions instead of unloading one edge of the ring the 2Z suffix means sheet steel shields on both sides rather than elastomeric seals: they keep coarse debris out but will not retain a grease fill as tightly as the NBR contact seals of the single row roller typical duties are tube and wire drawing guides, material handling lift tracks and paper converting web guides this size is regularly specified for tube and wire drawing guides and material handling lift tracks, where the 62 mm ring rides the cam profile and the 25 mm bore takes a g6 pin the two ball rows and the 20.6 mm wide ring make paper converting web guides a natural fit; the 320 g mass keeps the follower inertia low enough for rapid oscillating cam motion the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "applications": [ "glass handling line guides", "tube and wire drawing guides", "cam drives and indexing mechanisms", "woodworking machinery feed cams" ], "failure_modes": [ "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment", "like every double row cam roller the design prefers radial and tilting load; sustained axial thrust on the outer ring is outside the intended duty and shortens service life", "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows", "relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke" ], "pitfalls": [ "like every double row cam roller the design prefers radial and tilting load; sustained axial thrust on the outer ring is outside the intended duty and shortens service life", "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows" ], "faq": [ { "q": "What are the dimensions of 305705-C-2Z?", "a": "305705-C-2Z is a double row cam roller with a cylindrical (flat) running surface with a 25 mm bore, 62 mm outside diameter and 20.6 mm overall width. The 62 mm ring is the track contact surface and the 25 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305705 C-2Z is the SKF catalogue designation: the 3057 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305705-C-2Z?", "a": "The basic dynamic load rating C is 18.6 kN and the basic static load rating C0 is 11.8 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 15.3 kN and F0r 21.6 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305705-C-2Z", "305705 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 6000, "max_rpm": 6000 }, { "sku": "305706-C-2Z", "brand": "SKF", "manufacturer_designation": "305706 C-2Z", "series": "3057-series", "type": "cam_roller", "d_mm": 30, "D_mm": 72, "B_mm": 23.8, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 25.1, "static_load_kN": 16.3, "fatigue_load_limit_kN": 0.695, "weight_g": 490, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 72 mm outside diameter is the crowned track contact surface, the 30 mm bore takes the pin and the 23.8 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 25.1 kN and C0 16.3 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.54 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.695 kN against a 30 mm bore gives 0.84 kN per mm of bore, and the 5,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 17 kN dynamically and F0r 24 kN statically; because the permissible static load is the lower of F0r and C0, the 16.3 kN figure governs static selection here the 23.8 mm width carries 1.05 kN per mm, the ring section measures 21.0 mm between bore and track surface, and 490 g over a 72x23.8 mm envelope is 0.286 g per mm2 of projected area for medium-speed cam duty the 30 mm bore and 23.8 mm width are those of the 32 series ball bearing at the same size code, while the 72 mm outside diameter is 10 mm larger than that bearing's 62 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter the 30 mm bore puts this at the top of the cam roller range, where the 72 mm ring and 490 g mass make it a drive-design factor rather than a minor component 3057 is the flat-running-surface double row cam roller: the same 30 deg double row angular contact basis as 3058, but with a cylindrical (flat) outer ring instead of a crowned one the 30 deg contact angle of the two ball sets is what gives the double row roller its tilting stiffness — under a moment load the rows react in opposite directions instead of unloading one edge of the ring the 2Z suffix means sheet steel shields on both sides rather than elastomeric seals: they keep coarse debris out but will not retain a grease fill as tightly as the NBR contact seals of the single row roller typical duties are sheet metal forming press feeds, tube and wire drawing guides and material handling lift tracks this size is regularly specified for sheet metal forming press feeds and tube and wire drawing guides, where the 72 mm ring rides the cam profile and the 30 mm bore takes a g6 pin the two ball rows and the 23.8 mm wide ring make material handling lift tracks a natural fit; the 490 g mass keeps the follower inertia low enough for rapid oscillating cam motion relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "applications": [ "bottle filling carousel cams", "sheet metal forming press feeds", "automatic assembly line actuators", "robotic gantry track guidance" ], "failure_modes": [ "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment", "like every double row cam roller the design prefers radial and tilting load; sustained axial thrust on the outer ring is outside the intended duty and shortens service life", "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows", "relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke" ], "pitfalls": [ "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke", "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life" ], "faq": [ { "q": "What are the dimensions of 305706-C-2Z?", "a": "305706-C-2Z is a double row cam roller with a cylindrical (flat) running surface with a 30 mm bore, 72 mm outside diameter and 23.8 mm overall width. The 72 mm ring is the track contact surface and the 30 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305706 C-2Z is the SKF catalogue designation: the 3057 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305706-C-2Z?", "a": "The basic dynamic load rating C is 25.1 kN and the basic static load rating C0 is 16.3 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 17 kN and F0r 24 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305706-C-2Z", "305706 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 5000, "max_rpm": 5000 }, { "sku": "305707-C-2Z", "brand": "SKF", "manufacturer_designation": "305707 C-2Z", "series": "3057-series", "type": "cam_roller", "d_mm": 35, "D_mm": 80, "B_mm": 27, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 31.9, "static_load_kN": 20.4, "fatigue_load_limit_kN": 0.865, "weight_g": 650, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 80 mm outside diameter is the crowned track contact surface, the 35 mm bore takes the pin and the 27 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 31.9 kN and C0 20.4 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.56 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.865 kN against a 35 mm bore gives 0.91 kN per mm of bore, and the 4,300 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 15.6 kN dynamically and F0r 22.4 kN statically; because the permissible static load is the lower of F0r and C0, the 20.4 kN figure governs static selection here the 27 mm width carries 1.18 kN per mm, the ring section measures 22.5 mm between bore and track surface, and 650 g over a 80x27 mm envelope is 0.301 g per mm2 of projected area for low-speed cam duty dimensionally this is a 32 dimension series of double row angular contact ball bearings at 35 mm bore with a thick-walled outer ring pushed out to 80 mm (the base bearing measures 72 mm); the additional ring wall is what resists bending when the roller is unsupported in a housing at 35 mm bore this is the largest cam roller listed; the 27 mm width gives 31.9 kN dynamic capacity but the limiting speed drops to 4,300 r/min, so it suits slow, heavily loaded cams 3057.. C is the flat-surface counterpart of 3058.. C; it presents the full 27 mm width to a flat track, which raises the contact area but leaves no margin for track angularity double row cam rollers use two cages — a ribbon-type ball-centred stamped steel cage and a snap-type ball-centred cage in PA66, glass fibre reinforced — so high-temperature duty must respect the polyamide cage's temperature ceiling the running surface here is cylindrical (flat), so the contact geometry assumes a well-aligned track; any angular misalignment between the roller axis and the guide surface moves the load straight onto the ring edges typical duties are paper converting web guides, textile machinery cam gear and food processing index conveyors this size is regularly specified for paper converting web guides and textile machinery cam gear, where the 80 mm ring rides the cam profile and the 35 mm bore takes a g6 pin the two ball rows and the 27 mm wide ring make food processing index conveyors a natural fit; the 650 g mass keeps the follower inertia low enough for rapid oscillating cam motion the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "applications": [ "food processing index conveyors", "paper converting web guides", "packaging machine timing cams", "glass handling line guides" ], "failure_modes": [ "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment", "like every double row cam roller the design prefers radial and tilting load; sustained axial thrust on the outer ring is outside the intended duty and shortens service life", "the 2Z shield keeps coarse debris out but is not a contact seal, so fine abrasive dust in a wash-down environment can still reach the ball rows", "relubrication depends on the inner-ring lubrication hole and a drilled pin; if neither is provided, grease replacement needs the roller dismantled from the yoke" ], "pitfalls": [ "the cylindrical ring offers no crown relief, so any track crown, deflection or parallelism error shows up directly as edge stress and shortened ring life", "the flat running surface assumes an accurately aligned track; angular misalignment between the roller axis and the guide surface puts the whole load onto the ring edges", "the flat profile cannot be swapped for a crowned 3058 ring without changing the contact geometry and the tolerance budget for track alignment" ], "faq": [ { "q": "What are the dimensions of 305707-C-2Z?", "a": "305707-C-2Z is a double row cam roller with a cylindrical (flat) running surface with a 35 mm bore, 80 mm outside diameter and 27 mm overall width. The 80 mm ring is the track contact surface and the 35 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305707 C-2Z is the SKF catalogue designation: the 3057 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305707-C-2Z?", "a": "The basic dynamic load rating C is 31.9 kN and the basic static load rating C0 is 20.4 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 15.6 kN and F0r 22.4 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305707-C-2Z", "305707 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 4300, "max_rpm": 4300 }, { "sku": "305800-C-2Z", "brand": "SKF", "manufacturer_designation": "305800 C-2Z", "series": "3058-series", "type": "cam_roller", "d_mm": 10, "D_mm": 32, "B_mm": 14, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 6.76, "static_load_kN": 3.6, "fatigue_load_limit_kN": 0.153, "weight_g": 62, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 32 mm outside diameter is the crowned track contact surface, the 10 mm bore takes the pin and the 14 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 6.76 kN and C0 3.6 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.88 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.153 kN against a 10 mm bore gives 0.68 kN per mm of bore, and the 11,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 4.4 kN dynamically and F0r 6.3 kN statically; because the permissible static load is the lower of F0r and C0, the 3.6 kN figure governs static selection here the 14 mm width carries 0.48 kN per mm, the ring section measures 11.0 mm between bore and track surface, and 62 g over a 32x14 mm envelope is 0.138 g per mm2 of projected area for high-speed cam duty the 10 mm bore and 14 mm width are those of the 32 series ball bearing at the same size code, while the 32 mm outside diameter is 2 mm larger than that bearing's 30 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter at 10 mm bore this is the smallest cam roller in the catalogue chapter, the band chosen for compact cam drives, light indexing units and small transfer mechanisms where the 32 mm track diameter is already the largest envelope that fits 3058 is the crowned double row cam roller: two ball sets on a 30 deg contact angle inside a thick-walled ring whose running surface is ground crowned (400 mm radius), which is the standard surface for the double row design the 30 deg contact angle of the two ball sets is what gives the double row roller its tilting stiffness — under a moment load the rows react in opposite directions instead of unloading one edge of the ring the 2Z suffix on this roller denotes sheet steel shields rather than contact seals — effective against coarse contamination, but the design also provides a lubrication hole in the inner ring so that grease can be replenished through the pin typical duties are paper converting web guides, textile machinery cam gear and food processing index conveyors this size is regularly specified for paper converting web guides and textile machinery cam gear, where the 32 mm ring rides the cam profile and the 10 mm bore takes a g6 pin the two ball rows and the 14 mm wide ring make food processing index conveyors a natural fit; the 62 g mass keeps the follower inertia low enough for rapid oscillating cam motion read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "applications": [ "food processing index conveyors", "paper converting web guides", "packaging machine timing cams", "glass handling line guides" ], "failure_modes": [ "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position" ], "pitfalls": [ "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments" ], "faq": [ { "q": "What are the dimensions of 305800-C-2Z?", "a": "305800-C-2Z is a double row cam roller with a crowned running surface with a 10 mm bore, 32 mm outside diameter and 14 mm overall width. The 32 mm ring is the track contact surface and the 10 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305800 C-2Z is the SKF catalogue designation: the 3058 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305800-C-2Z?", "a": "The basic dynamic load rating C is 6.76 kN and the basic static load rating C0 is 3.6 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 4.4 kN and F0r 6.3 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305800-C-2Z", "305800 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 11000, "max_rpm": 11000 }, { "sku": "305801-C-2Z", "brand": "SKF", "manufacturer_designation": "305801 C-2Z", "series": "3058-series", "type": "cam_roller", "d_mm": 12, "D_mm": 35, "B_mm": 15.9, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 9.04, "static_load_kN": 4.555, "fatigue_load_limit_kN": 0.193, "weight_g": 78, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 35 mm outside diameter is the crowned track contact surface, the 12 mm bore takes the pin and the 15.9 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 9.04 kN and C0 4.555 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.98 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.193 kN against a 12 mm bore gives 0.75 kN per mm of bore, and the 9,500 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 3.8 kN dynamically and F0r 5.4 kN statically; because the permissible static load is the lower of F0r and C0, the 4.555 kN figure governs static selection here the 15.9 mm width carries 0.57 kN per mm, the ring section measures 11.5 mm between bore and track surface, and 78 g over a 35x15.9 mm envelope is 0.140 g per mm2 of projected area for medium-high-speed cam duty dimensionally this is a 32 dimension series of double row angular contact ball bearings at 12 mm bore with a thick-walled outer ring pushed out to 35 mm (the base bearing measures 32 mm); the additional ring wall is what resists bending when the roller is unsupported in a housing the 12 mm bore places this at the bottom of the range, where the double row angular contact basis still yields a useful tilting-moment capacity and the 78 g mass keeps drive inertia low 3058 is the crowned double row cam roller: two ball sets on a 30 deg contact angle inside a thick-walled ring whose running surface is ground crowned (400 mm radius), which is the standard surface for the double row design the 30 deg contact angle of the two ball sets is what gives the double row roller its tilting stiffness — under a moment load the rows react in opposite directions instead of unloading one edge of the ring the 2Z suffix on this roller denotes sheet steel shields rather than contact seals — effective against coarse contamination, but the design also provides a lubrication hole in the inner ring so that grease can be replenished through the pin typical duties are sheet metal forming press feeds, tube and wire drawing guides and material handling lift tracks this size is regularly specified for sheet metal forming press feeds and tube and wire drawing guides, where the 35 mm ring rides the cam profile and the 12 mm bore takes a g6 pin the two ball rows and the 15.9 mm wide ring make material handling lift tracks a natural fit; the 78 g mass keeps the follower inertia low enough for rapid oscillating cam motion the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "applications": [ "bottle filling carousel cams", "sheet metal forming press feeds", "automatic assembly line actuators", "robotic gantry track guidance" ], "failure_modes": [ "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position" ], "pitfalls": [ "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position", "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty" ], "faq": [ { "q": "What are the dimensions of 305801-C-2Z?", "a": "305801-C-2Z is a double row cam roller with a crowned running surface with a 12 mm bore, 35 mm outside diameter and 15.9 mm overall width. The 35 mm ring is the track contact surface and the 12 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305801 C-2Z is the SKF catalogue designation: the 3058 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305801-C-2Z?", "a": "The basic dynamic load rating C is 9.04 kN and the basic static load rating C0 is 4.555 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 3.8 kN and F0r 5.4 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305801-C-2Z", "305801 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 9500, "max_rpm": 9500 }, { "sku": "305802-C-2Z", "brand": "SKF", "manufacturer_designation": "305802 C-2Z", "series": "3058-series", "type": "cam_roller", "d_mm": 15, "D_mm": 40, "B_mm": 15.9, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 10.1, "static_load_kN": 5.5, "fatigue_load_limit_kN": 0.263, "weight_g": 100, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 40 mm outside diameter is the crowned track contact surface, the 15 mm bore takes the pin and the 15.9 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 10.1 kN and C0 5.5 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.84 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.263 kN against a 15 mm bore gives 0.67 kN per mm of bore, and the 9,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 5.85 kN dynamically and F0r 8.5 kN statically; because the permissible static load is the lower of F0r and C0, the 5.5 kN figure governs static selection here the 15.9 mm width carries 0.64 kN per mm, the ring section measures 12.5 mm between bore and track surface, and 100 g over a 40x15.9 mm envelope is 0.157 g per mm2 of projected area for medium-high-speed cam duty the 15 mm bore and 15.9 mm width are those of the 32 series ball bearing at the same size code, while the 40 mm outside diameter is 5 mm larger than that bearing's 35 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter the 15 mm bore falls in the small band, the workhorse size for general cam drives, packaging machine linkages and conveyor diverters where the 40 mm crowned ring rides directly on the cam profile the 3058 prefix identifies the double row cam roller with a crowned running surface — the design to choose when the load path tends to tilt the roller axis relative to the track because there are two ball rows, this roller accepts noticeably higher tilting moments than a single row cam roller of the same outside diameter; the trade is a larger section and a lower limiting speed the crowned outer ring is ground to a 400 mm radius while the bore and width follow the standard 32-series envelope, so the roller can be swapped into an existing yoke without changing the pin or housing typical duties are tube and wire drawing guides, material handling lift tracks and paper converting web guides this size is regularly specified for tube and wire drawing guides and material handling lift tracks, where the 40 mm ring rides the cam profile and the 15 mm bore takes a g6 pin the two ball rows and the 15.9 mm wide ring make paper converting web guides a natural fit; the 100 g mass keeps the follower inertia low enough for rapid oscillating cam motion the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "applications": [ "glass handling line guides", "tube and wire drawing guides", "cam drives and indexing mechanisms", "woodworking machinery feed cams" ], "failure_modes": [ "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position" ], "pitfalls": [ "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments" ], "faq": [ { "q": "What are the dimensions of 305802-C-2Z?", "a": "305802-C-2Z is a double row cam roller with a crowned running surface with a 15 mm bore, 40 mm outside diameter and 15.9 mm overall width. The 40 mm ring is the track contact surface and the 15 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305802 C-2Z is the SKF catalogue designation: the 3058 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305802-C-2Z?", "a": "The basic dynamic load rating C is 10.1 kN and the basic static load rating C0 is 5.5 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 5.85 kN and F0r 8.5 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305802-C-2Z", "305802 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 9000, "max_rpm": 9000 }, { "sku": "305803-C-2Z", "brand": "SKF", "manufacturer_designation": "305803 C-2Z", "series": "3058-series", "type": "cam_roller", "d_mm": 17, "D_mm": 47, "B_mm": 17.5, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 13, "static_load_kN": 7.35, "fatigue_load_limit_kN": 0.315, "weight_g": 160, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 47 mm outside diameter is the crowned track contact surface, the 17 mm bore takes the pin and the 17.5 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 13 kN and C0 7.35 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.77 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.315 kN against a 17 mm bore gives 0.76 kN per mm of bore, and the 8,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 9.3 kN dynamically and F0r 13.4 kN statically; because the permissible static load is the lower of F0r and C0, the 7.35 kN figure governs static selection here the 17.5 mm width carries 0.74 kN per mm, the ring section measures 15.0 mm between bore and track surface, and 160 g over a 47x17.5 mm envelope is 0.195 g per mm2 of projected area for medium-high-speed cam duty the catalogue sizes cam rollers on ISO 15 with the outside diameter excepted: bore 17 mm and width 17.5 mm follow the 32 series, but the 47 mm ring OD sits 7 mm proud of the 40 mm base-bearing diameter so that the track contact area is increased the 17 mm bore puts this in the small-to-medium transition; the two ball sets give the tilting stiffness needed when the cam track runs slightly out of parallel 3058.. C denotes the crowned variant of the double row cam roller; the two ball rows and the 30 deg contact angle give it more tilting-moment capacity than any single row execution double row cam rollers use two cages — a ribbon-type ball-centred stamped steel cage and a snap-type ball-centred cage in PA66, glass fibre reinforced — so high-temperature duty must respect the polyamide cage's temperature ceiling the crowned outer ring is ground to a 400 mm radius while the bore and width follow the standard 32-series envelope, so the roller can be swapped into an existing yoke without changing the pin or housing typical duties are packaging machine timing cams, glass handling line guides and cam drives and indexing mechanisms this size is regularly specified for packaging machine timing cams and glass handling line guides, where the 47 mm ring rides the cam profile and the 17 mm bore takes a g6 pin the two ball rows and the 17.5 mm wide ring make cam drives and indexing mechanisms a natural fit; the 160 g mass keeps the follower inertia low enough for rapid oscillating cam motion the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "applications": [ "textile machinery cam gear", "packaging machine timing cams", "food processing index conveyors", "glass handling line guides" ], "failure_modes": [ "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position" ], "pitfalls": [ "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position", "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life" ], "faq": [ { "q": "What are the dimensions of 305803-C-2Z?", "a": "305803-C-2Z is a double row cam roller with a crowned running surface with a 17 mm bore, 47 mm outside diameter and 17.5 mm overall width. The 47 mm ring is the track contact surface and the 17 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305803 C-2Z is the SKF catalogue designation: the 3058 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305803-C-2Z?", "a": "The basic dynamic load rating C is 13 kN and the basic static load rating C0 is 7.35 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 9.3 kN and F0r 13.4 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305803-C-2Z", "305803 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 8000, "max_rpm": 8000 }, { "sku": "305804-C-2Z", "brand": "SKF", "manufacturer_designation": "305804 C-2Z", "series": "3058-series", "type": "cam_roller", "d_mm": 20, "D_mm": 52, "B_mm": 20.6, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 16.5, "static_load_kN": 9.5, "fatigue_load_limit_kN": 0.4, "weight_g": 220, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 52 mm outside diameter is the crowned track contact surface, the 20 mm bore takes the pin and the 20.6 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 16.5 kN and C0 9.5 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.74 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.4 kN against a 20 mm bore gives 0.82 kN per mm of bore, and the 7,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 8.3 kN dynamically and F0r 12 kN statically; because the permissible static load is the lower of F0r and C0, the 9.5 kN figure governs static selection here the 20.6 mm width carries 0.80 kN per mm, the ring section measures 16.0 mm between bore and track surface, and 220 g over a 52x20.6 mm envelope is 0.205 g per mm2 of projected area for medium-high-speed cam duty the 20 mm bore and 20.6 mm width are those of the 32 series ball bearing at the same size code, while the 52 mm outside diameter is 5 mm larger than that bearing's 47 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter the 20 mm bore places this in the medium band where the thick-walled outer ring is deep enough to carry 16.5 kN without excessive edge stress on the track reading 3058.. C-2Z: double row cam roller based on the 32 dimension series of double row angular contact ball bearings, crowned track surface, sheet steel shields on both sides the inner ring carries a lubrication hole on the double row design: where the mating pin is drilled with a matching duct, the roller can be relubricated in situ without dismantling the yoke the 2Z suffix on this roller denotes sheet steel shields rather than contact seals — effective against coarse contamination, but the design also provides a lubrication hole in the inner ring so that grease can be replenished through the pin typical duties are glass handling line guides, cam drives and indexing mechanisms and woodworking machinery feed cams this size is regularly specified for glass handling line guides and cam drives and indexing mechanisms, where the 52 mm ring rides the cam profile and the 20 mm bore takes a g6 pin the two ball rows and the 20.6 mm wide ring make woodworking machinery feed cams a natural fit; the 220 g mass keeps the follower inertia low enough for rapid oscillating cam motion the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position", "applications": [ "tube and wire drawing guides", "glass handling line guides", "material handling lift tracks", "paper converting web guides" ], "failure_modes": [ "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position" ], "pitfalls": [ "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position" ], "faq": [ { "q": "What are the dimensions of 305804-C-2Z?", "a": "305804-C-2Z is a double row cam roller with a crowned running surface with a 20 mm bore, 52 mm outside diameter and 20.6 mm overall width. The 52 mm ring is the track contact surface and the 20 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305804 C-2Z is the SKF catalogue designation: the 3058 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305804-C-2Z?", "a": "The basic dynamic load rating C is 16.5 kN and the basic static load rating C0 is 9.5 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 8.3 kN and F0r 12 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305804-C-2Z", "305804 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 7000, "max_rpm": 7000 }, { "sku": "305805-C-2Z", "brand": "SKF", "manufacturer_designation": "305805 C-2Z", "series": "3058-series", "type": "cam_roller", "d_mm": 25, "D_mm": 62, "B_mm": 20.6, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 18.6, "static_load_kN": 11.8, "fatigue_load_limit_kN": 0.5, "weight_g": 320, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 62 mm outside diameter is the crowned track contact surface, the 25 mm bore takes the pin and the 20.6 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 18.6 kN and C0 11.8 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.58 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.5 kN against a 25 mm bore gives 0.74 kN per mm of bore, and the 6,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 15.3 kN dynamically and F0r 21.6 kN statically; because the permissible static load is the lower of F0r and C0, the 11.8 kN figure governs static selection here the 20.6 mm width carries 0.90 kN per mm, the ring section measures 18.5 mm between bore and track surface, and 320 g over a 62x20.6 mm envelope is 0.251 g per mm2 of projected area for medium-speed cam duty the 25 mm bore and 20.6 mm width are those of the 32 series ball bearing at the same size code, while the 62 mm outside diameter is 10 mm larger than that bearing's 52 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter the 25 mm bore places this in the medium band where the thick-walled outer ring is deep enough to carry 18.6 kN without excessive edge stress on the track 3058 is the crowned double row cam roller: two ball sets on a 30 deg contact angle inside a thick-walled ring whose running surface is ground crowned (400 mm radius), which is the standard surface for the double row design the 30 deg contact angle of the two ball sets is what gives the double row roller its tilting stiffness — under a moment load the rows react in opposite directions instead of unloading one edge of the ring the 2Z suffix on this roller denotes sheet steel shields rather than contact seals — effective against coarse contamination, but the design also provides a lubrication hole in the inner ring so that grease can be replenished through the pin typical duties are textile machinery cam gear, food processing index conveyors and packaging machine timing cams this size is regularly specified for textile machinery cam gear and food processing index conveyors, where the 62 mm ring rides the cam profile and the 25 mm bore takes a g6 pin the two ball rows and the 20.6 mm wide ring make packaging machine timing cams a natural fit; the 320 g mass keeps the follower inertia low enough for rapid oscillating cam motion the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "applications": [ "packaging machine timing cams", "textile machinery cam gear", "glass handling line guides", "cam drives and indexing mechanisms" ], "failure_modes": [ "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position" ], "pitfalls": [ "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position", "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot" ], "faq": [ { "q": "What are the dimensions of 305805-C-2Z?", "a": "305805-C-2Z is a double row cam roller with a crowned running surface with a 25 mm bore, 62 mm outside diameter and 20.6 mm overall width. The 62 mm ring is the track contact surface and the 25 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305805 C-2Z is the SKF catalogue designation: the 3058 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305805-C-2Z?", "a": "The basic dynamic load rating C is 18.6 kN and the basic static load rating C0 is 11.8 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 15.3 kN and F0r 21.6 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305805-C-2Z", "305805 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 6000, "max_rpm": 6000 }, { "sku": "305806-C-2Z", "brand": "SKF", "manufacturer_designation": "305806 C-2Z", "series": "3058-series", "type": "cam_roller", "d_mm": 30, "D_mm": 72, "B_mm": 23.8, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 25.1, "static_load_kN": 16.3, "fatigue_load_limit_kN": 0.695, "weight_g": 490, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 72 mm outside diameter is the crowned track contact surface, the 30 mm bore takes the pin and the 23.8 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 25.1 kN and C0 16.3 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.54 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.695 kN against a 30 mm bore gives 0.84 kN per mm of bore, and the 5,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 17 kN dynamically and F0r 24 kN statically; because the permissible static load is the lower of F0r and C0, the 16.3 kN figure governs static selection here the 23.8 mm width carries 1.05 kN per mm, the ring section measures 21.0 mm between bore and track surface, and 490 g over a 72x23.8 mm envelope is 0.286 g per mm2 of projected area for medium-speed cam duty dimensionally this is a 32 dimension series of double row angular contact ball bearings at 30 mm bore with a thick-walled outer ring pushed out to 72 mm (the base bearing measures 62 mm); the additional ring wall is what resists bending when the roller is unsupported in a housing at 30 mm bore this is the largest cam roller listed; the 23.8 mm width gives 25.1 kN dynamic capacity but the limiting speed drops to 5,000 r/min, so it suits slow, heavily loaded cams the 3058 prefix identifies the double row cam roller with a crowned running surface — the design to choose when the load path tends to tilt the roller axis relative to the track because there are two ball rows, this roller accepts noticeably higher tilting moments than a single row cam roller of the same outside diameter; the trade is a larger section and a lower limiting speed the crowned outer ring is ground to a 400 mm radius while the bore and width follow the standard 32-series envelope, so the roller can be swapped into an existing yoke without changing the pin or housing typical duties are food processing index conveyors, packaging machine timing cams and glass handling line guides this size is regularly specified for food processing index conveyors and packaging machine timing cams, where the 72 mm ring rides the cam profile and the 30 mm bore takes a g6 pin the two ball rows and the 23.8 mm wide ring make glass handling line guides a natural fit; the 490 g mass keeps the follower inertia low enough for rapid oscillating cam motion the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "applications": [ "paper converting web guides", "food processing index conveyors", "textile machinery cam gear", "packaging machine timing cams" ], "failure_modes": [ "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position" ], "pitfalls": [ "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life" ], "faq": [ { "q": "What are the dimensions of 305806-C-2Z?", "a": "305806-C-2Z is a double row cam roller with a crowned running surface with a 30 mm bore, 72 mm outside diameter and 23.8 mm overall width. The 72 mm ring is the track contact surface and the 30 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305806 C-2Z is the SKF catalogue designation: the 3058 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305806-C-2Z?", "a": "The basic dynamic load rating C is 25.1 kN and the basic static load rating C0 is 16.3 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 17 kN and F0r 24 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305806-C-2Z", "305806 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 5000, "max_rpm": 5000 }, { "sku": "305807-C-2Z", "brand": "SKF", "manufacturer_designation": "305807 C-2Z", "series": "3058-series", "type": "cam_roller", "d_mm": 35, "D_mm": 80, "B_mm": 27, "material": "GCr15", "seal_type": "ZZ", "clearance": "CN", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 31.9, "static_load_kN": 20.4, "fatigue_load_limit_kN": 0.865, "weight_g": 650, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 150, "standard": "ISO 15", "naming_rule_text": "the 80 mm outside diameter is the crowned track contact surface, the 35 mm bore takes the pin and the 27 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 31.9 kN and C0 20.4 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.56 reflects two ball sets at a 30 deg contact angle fatigue load limit Pu 0.865 kN against a 35 mm bore gives 0.91 kN per mm of bore, and the 4,300 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 15.6 kN dynamically and F0r 22.4 kN statically; because the permissible static load is the lower of F0r and C0, the 20.4 kN figure governs static selection here the 27 mm width carries 1.18 kN per mm, the ring section measures 22.5 mm between bore and track surface, and 650 g over a 80x27 mm envelope is 0.301 g per mm2 of projected area for low-speed cam duty the 35 mm bore and 27 mm width are those of the 32 series ball bearing at the same size code, while the 80 mm outside diameter is 8 mm larger than that bearing's 72 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter the 35 mm bore puts this at the top of the cam roller range, where the 80 mm ring and 650 g mass make it a drive-design factor rather than a minor component the 3058 designation means a crowned double row cam roller — the 2Z suffix marks the sheet steel shields, and the two ball sets share the radial load so the ring sees less bending per row the 30 deg contact angle of the two ball sets is what gives the double row roller its tilting stiffness — under a moment load the rows react in opposite directions instead of unloading one edge of the ring the 2Z suffix on this roller denotes sheet steel shields rather than contact seals — effective against coarse contamination, but the design also provides a lubrication hole in the inner ring so that grease can be replenished through the pin typical duties are bottle filling carousel cams, automatic assembly line actuators and robotic gantry track guidance this size is regularly specified for bottle filling carousel cams and automatic assembly line actuators, where the 80 mm ring rides the cam profile and the 35 mm bore takes a g6 pin the two ball rows and the 27 mm wide ring make robotic gantry track guidance a natural fit; the 650 g mass keeps the follower inertia low enough for rapid oscillating cam motion the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "applications": [ "sheet metal forming press feeds", "bottle filling carousel cams", "tube and wire drawing guides", "material handling lift tracks" ], "failure_modes": [ "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair", "relubrication is only possible through the inner-ring lubrication hole, which needs a matching duct in the pin; without that duct the roller is effectively sealed for life", "the 2Z shows as a sheet steel shield, so it will not hold grease as tightly as a contact seal and will not exclude fine abrasive dust from wash-down environments", "the permissible static load is governed by the lower of F0r and C0, and the two ball rows must not be sized on C0 alone in a stationary cam position" ], "pitfalls": [ "read the loading direction before selecting the contact angle: the 30 deg double row design is strong radially and in tilt, but continuous axial load on the outer ring is outside its intended duty", "the polyamide snap cage has a lower temperature ceiling than the steel ribbon cage — respect the lubricant and cage limits when the application runs hot", "the crowned surface is ground at twice the Normal tolerance for its diameter; do not mix a 3058 ring with a 3057 flat ring in a matched pair" ], "faq": [ { "q": "What are the dimensions of 305807-C-2Z?", "a": "305807-C-2Z is a double row cam roller with a crowned running surface with a 35 mm bore, 80 mm outside diameter and 27 mm overall width. The 80 mm ring is the track contact surface and the 35 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the C-2Z designation mean?", "a": "305807 C-2Z is the SKF catalogue designation: the 3058 prefix fixes the double row angular contact basis with a thick-walled outer ring, and the 2Z suffix means sheet steel shields on both sides." }, { "q": "What is the load capacity of 305807-C-2Z?", "a": "The basic dynamic load rating C is 31.9 kN and the basic static load rating C0 is 20.4 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 15.6 kN and F0r 22.4 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "305807-C-2Z", "305807 C-2Z" ], "locale_variants": {}, "limiting_speed_rpm": 4300, "max_rpm": 4300 }, { "sku": "361200-R", "brand": "SKF", "manufacturer_designation": "361200 R", "series": "3612-series", "type": "cam_roller", "d_mm": 10, "D_mm": 32, "B_mm": 9, "material": "GCr15", "seal_type": "2RS", "clearance": "C3", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 4.68, "static_load_kN": 2.04, "fatigue_load_limit_kN": 0.085, "weight_g": 40, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 120, "standard": "ISO 15", "naming_rule_text": "the 32 mm outside diameter is the crowned track contact surface, the 10 mm bore takes the pin and the 9 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 4.68 kN and C0 2.04 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 2.29 reflects a single deep groove ball set fatigue load limit Pu 0.085 kN against a 10 mm bore gives 0.47 kN per mm of bore, and the 12,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 3.45 kN dynamically and F0r 5 kN statically; because the permissible static load is the lower of F0r and C0, the 2.04 kN figure governs static selection here the 9 mm width carries 0.52 kN per mm, the ring section measures 11.0 mm between bore and track surface, and 40 g over a 32x9 mm envelope is 0.139 g per mm2 of projected area for high-speed cam duty the catalogue sizes cam rollers on ISO 15 with the outside diameter excepted: bore 10 mm and width 9 mm follow the 62 series, but the 32 mm ring OD sits 2 mm proud of the 30 mm base-bearing diameter so that the track contact area is increased with a 10 mm bore this sizes into the miniature end of the cam roller range; the 9 mm width and 32 mm OD suit narrow track profiles and small-pitch indexing cams 3612.. R is the single row cam roller: heat stabilised to at least 120 degC, rated with internal clearance C3, and sealed rather than shielded so it needs no relubrication in normal duty the ring profile here is crowned (400 mm radius) rather than flat, which is the standard SKF cam roller surface and the reason a single row roller tolerates modest track angularity typical duties are conveyor diverters and transfer stations, sheet metal forming press feeds and tube and wire drawing guides this size is regularly specified for conveyor diverters and transfer stations and sheet metal forming press feeds, where the 32 mm ring rides the cam profile and the 10 mm bore takes a g6 pin the single ball row and the 9 mm wide ring make tube and wire drawing guides a natural fit; the 40 g mass keeps the follower inertia low enough for rapid indexing cycles the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "applications": [ "food processing index conveyors", "conveyor diverters and transfer stations", "packaging machine timing cams", "glass handling line guides" ], "failure_modes": [ "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life" ], "pitfalls": [ "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life", "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them" ], "faq": [ { "q": "What are the dimensions of 361200-R?", "a": "361200-R is a single row cam roller with a 10 mm bore, 32 mm outside diameter and 9 mm overall width. The 32 mm ring is the track contact surface and the 10 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the R designation mean?", "a": "361200 R is the SKF catalogue designation: the 3612 prefix fixes the single row deep groove basis with a thick-walled outer ring, and the R suffix means NBR contact seals on both sides." }, { "q": "What is the load capacity of 361200-R?", "a": "The basic dynamic load rating C is 4.68 kN and the basic static load rating C0 is 2.04 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 3.45 kN and F0r 5 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "361200-R", "361200 R" ], "locale_variants": {}, "limiting_speed_rpm": 12000, "max_rpm": 12000 }, { "sku": "361201-R", "brand": "SKF", "manufacturer_designation": "361201 R", "series": "3612-series", "type": "cam_roller", "d_mm": 12, "D_mm": 35, "B_mm": 10, "material": "GCr15", "seal_type": "2RS", "clearance": "C3", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 6.24, "static_load_kN": 2.6, "fatigue_load_limit_kN": 0.11, "weight_g": 51, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 120, "standard": "ISO 15", "naming_rule_text": "the 35 mm outside diameter is the crowned track contact surface, the 12 mm bore takes the pin and the 10 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 6.24 kN and C0 2.6 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 2.40 reflects a single deep groove ball set fatigue load limit Pu 0.11 kN against a 12 mm bore gives 0.52 kN per mm of bore, and the 11,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 3.35 kN dynamically and F0r 4.75 kN statically; because the permissible static load is the lower of F0r and C0, the 2.6 kN figure governs static selection here the 10 mm width carries 0.62 kN per mm, the ring section measures 11.5 mm between bore and track surface, and 51 g over a 35x10 mm envelope is 0.146 g per mm2 of projected area for high-speed cam duty the 12 mm bore and 10 mm width are those of the 62 series ball bearing at the same size code, while the 35 mm outside diameter is 3 mm larger than that bearing's 32 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter at 12 mm bore this is the smallest cam roller in the catalogue chapter, the band chosen for compact cam drives, light indexing units and small transfer mechanisms where the 35 mm track diameter is already the largest envelope that fits the 3612 prefix identifies the single row execution — the trailing R is the contact-seal suffix, distinguishing it from the caged, shielded double row rollers of the same chapter the ring profile here is crowned (400 mm radius) rather than flat, which is the standard SKF cam roller surface and the reason a single row roller tolerates modest track angularity typical duties are packaging machine timing cams, glass handling line guides and cam drives and indexing mechanisms this size is regularly specified for packaging machine timing cams and glass handling line guides, where the 35 mm ring rides the cam profile and the 12 mm bore takes a g6 pin the single ball row and the 10 mm wide ring make cam drives and indexing mechanisms a natural fit; the 51 g mass keeps the follower inertia low enough for rapid indexing cycles the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "applications": [ "textile machinery cam gear", "packaging machine timing cams", "food processing index conveyors", "glass handling line guides" ], "failure_modes": [ "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life" ], "pitfalls": [ "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them" ], "faq": [ { "q": "What are the dimensions of 361201-R?", "a": "361201-R is a single row cam roller with a 12 mm bore, 35 mm outside diameter and 10 mm overall width. The 35 mm ring is the track contact surface and the 12 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the R designation mean?", "a": "361201 R is the SKF catalogue designation: the 3612 prefix fixes the single row deep groove basis with a thick-walled outer ring, and the R suffix means NBR contact seals on both sides." }, { "q": "What is the load capacity of 361201-R?", "a": "The basic dynamic load rating C is 6.24 kN and the basic static load rating C0 is 2.6 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 3.35 kN and F0r 4.75 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "361201-R", "361201 R" ], "locale_variants": {}, "limiting_speed_rpm": 11000, "max_rpm": 11000 }, { "sku": "361202-R", "brand": "SKF", "manufacturer_designation": "361202 R", "series": "3612-series", "type": "cam_roller", "d_mm": 15, "D_mm": 40, "B_mm": 11, "material": "GCr15", "seal_type": "2RS", "clearance": "C3", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 7.02, "static_load_kN": 3.2, "fatigue_load_limit_kN": 0.137, "weight_g": 72, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 120, "standard": "ISO 15", "naming_rule_text": "the 40 mm outside diameter is the crowned track contact surface, the 15 mm bore takes the pin and the 11 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 7.02 kN and C0 3.2 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 2.19 reflects a single deep groove ball set fatigue load limit Pu 0.137 kN against a 15 mm bore gives 0.47 kN per mm of bore, and the 9,500 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 5.1 kN dynamically and F0r 7.35 kN statically; because the permissible static load is the lower of F0r and C0, the 3.2 kN figure governs static selection here the 11 mm width carries 0.64 kN per mm, the ring section measures 12.5 mm between bore and track surface, and 72 g over a 40x11 mm envelope is 0.164 g per mm2 of projected area for medium-high-speed cam duty the 15 mm bore and 11 mm width are those of the 62 series ball bearing at the same size code, while the 40 mm outside diameter is 5 mm larger than that bearing's 35 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter the 15 mm bore falls in the small band, the workhorse size for general cam drives, packaging machine linkages and conveyor diverters where the 40 mm crowned ring rides directly on the cam profile the 3612 designation means the lightest cam roller design in the chapter, based on a single deep groove ball set; the R suffix marks the NBR contact seals that keep the factory grease fill in place for life the crowned running surface is standard on this design — the 40 mm ring is ground to a radius of 400 mm so that a slightly misaligned or deflecting track does not concentrate load on one edge typical duties are woodworking machinery feed cams, bottle filling carousel cams and automatic assembly line actuators this size is regularly specified for woodworking machinery feed cams and bottle filling carousel cams, where the 40 mm ring rides the cam profile and the 15 mm bore takes a g6 pin the single ball row and the 11 mm wide ring make automatic assembly line actuators a natural fit; the 72 g mass keeps the follower inertia low enough for rapid indexing cycles the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life", "applications": [ "automatic assembly line actuators", "woodworking machinery feed cams", "robotic gantry track guidance", "printing press linkage rollers" ], "failure_modes": [ "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life" ], "pitfalls": [ "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life" ], "faq": [ { "q": "What are the dimensions of 361202-R?", "a": "361202-R is a single row cam roller with a 15 mm bore, 40 mm outside diameter and 11 mm overall width. The 40 mm ring is the track contact surface and the 15 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the R designation mean?", "a": "361202 R is the SKF catalogue designation: the 3612 prefix fixes the single row deep groove basis with a thick-walled outer ring, and the R suffix means NBR contact seals on both sides." }, { "q": "What is the load capacity of 361202-R?", "a": "The basic dynamic load rating C is 7.02 kN and the basic static load rating C0 is 3.2 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 5.1 kN and F0r 7.35 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "361202-R", "361202 R" ], "locale_variants": {}, "limiting_speed_rpm": 9500, "max_rpm": 9500 }, { "sku": "361203-R", "brand": "SKF", "manufacturer_designation": "361203 R", "series": "3612-series", "type": "cam_roller", "d_mm": 17, "D_mm": 47, "B_mm": 12, "material": "GCr15", "seal_type": "2RS", "clearance": "C3", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 8.84, "static_load_kN": 4.25, "fatigue_load_limit_kN": 0.18, "weight_g": 110, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 120, "standard": "ISO 15", "naming_rule_text": "the 47 mm outside diameter is the crowned track contact surface, the 17 mm bore takes the pin and the 12 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 8.84 kN and C0 4.25 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 2.08 reflects a single deep groove ball set fatigue load limit Pu 0.18 kN against a 17 mm bore gives 0.52 kN per mm of bore, and the 8,500 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 8.15 kN dynamically and F0r 11.6 kN statically; because the permissible static load is the lower of F0r and C0, the 4.25 kN figure governs static selection here the 12 mm width carries 0.74 kN per mm, the ring section measures 15.0 mm between bore and track surface, and 110 g over a 47x12 mm envelope is 0.195 g per mm2 of projected area for medium-high-speed cam duty dimensionally this is a 62 dimension series of deep groove ball bearings at 17 mm bore with a thick-walled outer ring pushed out to 47 mm (the base bearing measures 40 mm); the additional ring wall is what resists bending when the roller is unsupported in a housing at 17 mm bore this size balances load capacity against envelope: 8.84 kN of dynamic capacity in a 47 mm ring, with the 12 mm width still narrow enough for compact cam plates 3612.. R is the single row cam roller: heat stabilised to at least 120 degC, rated with internal clearance C3, and sealed rather than shielded so it needs no relubrication in normal duty the ring profile here is crowned (400 mm radius) rather than flat, which is the standard SKF cam roller surface and the reason a single row roller tolerates modest track angularity typical duties are cam drives and indexing mechanisms, woodworking machinery feed cams and bottle filling carousel cams this size is regularly specified for cam drives and indexing mechanisms and woodworking machinery feed cams, where the 47 mm ring rides the cam profile and the 17 mm bore takes a g6 pin the single ball row and the 12 mm wide ring make bottle filling carousel cams a natural fit; the 110 g mass keeps the follower inertia low enough for rapid indexing cycles heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "applications": [ "material handling lift tracks", "cam drives and indexing mechanisms", "paper converting web guides", "textile machinery cam gear" ], "failure_modes": [ "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life" ], "pitfalls": [ "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life", "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway" ], "faq": [ { "q": "What are the dimensions of 361203-R?", "a": "361203-R is a single row cam roller with a 17 mm bore, 47 mm outside diameter and 12 mm overall width. The 47 mm ring is the track contact surface and the 17 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the R designation mean?", "a": "361203 R is the SKF catalogue designation: the 3612 prefix fixes the single row deep groove basis with a thick-walled outer ring, and the R suffix means NBR contact seals on both sides." }, { "q": "What is the load capacity of 361203-R?", "a": "The basic dynamic load rating C is 8.84 kN and the basic static load rating C0 is 4.25 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 8.15 kN and F0r 11.6 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "361203-R", "361203 R" ], "locale_variants": {}, "limiting_speed_rpm": 8500, "max_rpm": 8500 }, { "sku": "361204-R", "brand": "SKF", "manufacturer_designation": "361204 R", "series": "3612-series", "type": "cam_roller", "d_mm": 20, "D_mm": 52, "B_mm": 14, "material": "GCr15", "seal_type": "2RS", "clearance": "C3", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 11.4, "static_load_kN": 5.5, "fatigue_load_limit_kN": 0.232, "weight_g": 150, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 120, "standard": "ISO 15", "naming_rule_text": "the 52 mm outside diameter is the crowned track contact surface, the 20 mm bore takes the pin and the 14 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 11.4 kN and C0 5.5 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 2.07 reflects a single deep groove ball set fatigue load limit Pu 0.232 kN against a 20 mm bore gives 0.57 kN per mm of bore, and the 7,000 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 7.5 kN dynamically and F0r 10.6 kN statically; because the permissible static load is the lower of F0r and C0, the 5.5 kN figure governs static selection here the 14 mm width carries 0.81 kN per mm, the ring section measures 16.0 mm between bore and track surface, and 150 g over a 52x14 mm envelope is 0.206 g per mm2 of projected area for medium-high-speed cam duty the 20 mm bore and 14 mm width are those of the 62 series ball bearing at the same size code, while the 52 mm outside diameter is 5 mm larger than that bearing's 47 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter the 20 mm bore places this in the medium band where the thick-walled outer ring is deep enough to carry 11.4 kN without excessive edge stress on the track the 3612 designation means the lightest cam roller design in the chapter, based on a single deep groove ball set; the R suffix marks the NBR contact seals that keep the factory grease fill in place for life the crowned running surface is standard on this design — the 52 mm ring is ground to a radius of 400 mm so that a slightly misaligned or deflecting track does not concentrate load on one edge typical duties are automatic assembly line actuators, robotic gantry track guidance and printing press linkage rollers this size is regularly specified for automatic assembly line actuators and robotic gantry track guidance, where the 52 mm ring rides the cam profile and the 20 mm bore takes a g6 pin the single ball row and the 14 mm wide ring make printing press linkage rollers a natural fit; the 150 g mass keeps the follower inertia low enough for rapid indexing cycles the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "applications": [ "woodworking machinery feed cams", "automatic assembly line actuators", "bottle filling carousel cams", "robotic gantry track guidance" ], "failure_modes": [ "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life" ], "pitfalls": [ "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring" ], "faq": [ { "q": "What are the dimensions of 361204-R?", "a": "361204-R is a single row cam roller with a 20 mm bore, 52 mm outside diameter and 14 mm overall width. The 52 mm ring is the track contact surface and the 20 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the R designation mean?", "a": "361204 R is the SKF catalogue designation: the 3612 prefix fixes the single row deep groove basis with a thick-walled outer ring, and the R suffix means NBR contact seals on both sides." }, { "q": "What is the load capacity of 361204-R?", "a": "The basic dynamic load rating C is 11.4 kN and the basic static load rating C0 is 5.5 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 7.5 kN and F0r 10.6 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "361204-R", "361204 R" ], "locale_variants": {}, "limiting_speed_rpm": 7000, "max_rpm": 7000 }, { "sku": "361205-R", "brand": "SKF", "manufacturer_designation": "361205 R", "series": "3612-series", "type": "cam_roller", "d_mm": 25, "D_mm": 62, "B_mm": 15, "material": "GCr15", "seal_type": "2RS", "clearance": "C3", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 13, "static_load_kN": 6.8, "fatigue_load_limit_kN": 0.29, "weight_g": 240, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 120, "standard": "ISO 15", "naming_rule_text": "the 62 mm outside diameter is the crowned track contact surface, the 25 mm bore takes the pin and the 15 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 13 kN and C0 6.8 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.91 reflects a single deep groove ball set fatigue load limit Pu 0.29 kN against a 25 mm bore gives 0.52 kN per mm of bore, and the 6,300 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 12.9 kN dynamically and F0r 18.6 kN statically; because the permissible static load is the lower of F0r and C0, the 6.8 kN figure governs static selection here the 15 mm width carries 0.87 kN per mm, the ring section measures 18.5 mm between bore and track surface, and 240 g over a 62x15 mm envelope is 0.258 g per mm2 of projected area for medium-speed cam duty the 25 mm bore and 15 mm width are those of the 62 series ball bearing at the same size code, while the 62 mm outside diameter is 10 mm larger than that bearing's 52 mm OD — this follows the SKF rule that cam rollers keep the ISO 15 dimension series except for the outside diameter the 25 mm bore places this in the medium band where the thick-walled outer ring is deep enough to carry 13 kN without excessive edge stress on the track 3612 is the basic designation of the single row cam roller: a 62-series deep groove ball bearing with a thick-walled crowned outer ring, capped on both sides by a sheet-steel-reinforced NBR contact seal and greased for life the crowned running surface is standard on this design — the 62 mm ring is ground to a radius of 400 mm so that a slightly misaligned or deflecting track does not concentrate load on one edge typical duties are material handling lift tracks, paper converting web guides and textile machinery cam gear this size is regularly specified for material handling lift tracks and paper converting web guides, where the 62 mm ring rides the cam profile and the 25 mm bore takes a g6 pin the single ball row and the 15 mm wide ring make textile machinery cam gear a natural fit; the 240 g mass keeps the follower inertia low enough for rapid indexing cycles the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "applications": [ "cam drives and indexing mechanisms", "material handling lift tracks", "woodworking machinery feed cams", "bottle filling carousel cams" ], "failure_modes": [ "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life" ], "pitfalls": [ "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position" ], "faq": [ { "q": "What are the dimensions of 361205-R?", "a": "361205-R is a single row cam roller with a 25 mm bore, 62 mm outside diameter and 15 mm overall width. The 62 mm ring is the track contact surface and the 25 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the R designation mean?", "a": "361205 R is the SKF catalogue designation: the 3612 prefix fixes the single row deep groove basis with a thick-walled outer ring, and the R suffix means NBR contact seals on both sides." }, { "q": "What is the load capacity of 361205-R?", "a": "The basic dynamic load rating C is 13 kN and the basic static load rating C0 is 6.8 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 12.9 kN and F0r 18.6 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "361205-R", "361205 R" ], "locale_variants": {}, "limiting_speed_rpm": 6300, "max_rpm": 6300 }, { "sku": "361206-R", "brand": "SKF", "manufacturer_designation": "361206 R", "series": "3612-series", "type": "cam_roller", "d_mm": 30, "D_mm": 72, "B_mm": 16, "material": "GCr15", "seal_type": "2RS", "clearance": "C3", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 17.4, "static_load_kN": 9.5, "fatigue_load_limit_kN": 0.4, "weight_g": 340, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 120, "standard": "ISO 15", "naming_rule_text": "the 72 mm outside diameter is the crowned track contact surface, the 30 mm bore takes the pin and the 16 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 17.4 kN and C0 9.5 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.83 reflects a single deep groove ball set fatigue load limit Pu 0.4 kN against a 30 mm bore gives 0.58 kN per mm of bore, and the 5,300 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 14.6 kN dynamically and F0r 20.8 kN statically; because the permissible static load is the lower of F0r and C0, the 9.5 kN figure governs static selection here the 16 mm width carries 1.09 kN per mm, the ring section measures 21.0 mm between bore and track surface, and 340 g over a 72x16 mm envelope is 0.295 g per mm2 of projected area for medium-speed cam duty dimensionally this is a 62 dimension series of deep groove ball bearings at 30 mm bore with a thick-walled outer ring pushed out to 72 mm (the base bearing measures 62 mm); the additional ring wall is what resists bending when the roller is unsupported in a housing at 30 mm bore this is the largest cam roller listed; the 16 mm width gives 17.4 kN dynamic capacity but the limiting speed drops to 5,300 r/min, so it suits slow, heavily loaded cams reading 3612.. R: single row cam roller built on a deep groove ball bearing, riveted ball-centred stamped steel cage, crowned running surface and NBR contact seals on both sides the standard SKF cam roller ring is crowned to a 400 mm radius; this is what keeps the contact patch away from the ring edges when the cam plate is not perfectly parallel typical duties are food processing index conveyors, packaging machine timing cams and glass handling line guides this size is regularly specified for food processing index conveyors and packaging machine timing cams, where the 72 mm ring rides the cam profile and the 30 mm bore takes a g6 pin the single ball row and the 16 mm wide ring make glass handling line guides a natural fit; the 340 g mass keeps the follower inertia low enough for rapid indexing cycles the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "applications": [ "conveyor diverters and transfer stations", "food processing index conveyors", "sheet metal forming press feeds", "tube and wire drawing guides" ], "failure_modes": [ "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life" ], "pitfalls": [ "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance" ], "faq": [ { "q": "What are the dimensions of 361206-R?", "a": "361206-R is a single row cam roller with a 30 mm bore, 72 mm outside diameter and 16 mm overall width. The 72 mm ring is the track contact surface and the 30 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the R designation mean?", "a": "361206 R is the SKF catalogue designation: the 3612 prefix fixes the single row deep groove basis with a thick-walled outer ring, and the R suffix means NBR contact seals on both sides." }, { "q": "What is the load capacity of 361206-R?", "a": "The basic dynamic load rating C is 17.4 kN and the basic static load rating C0 is 9.5 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 14.6 kN and F0r 20.8 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "361206-R", "361206 R" ], "locale_variants": {}, "limiting_speed_rpm": 5300, "max_rpm": 5300 }, { "sku": "361207-R", "brand": "SKF", "manufacturer_designation": "361207 R", "series": "3612-series", "type": "cam_roller", "d_mm": 35, "D_mm": 80, "B_mm": 17, "material": "GCr15", "seal_type": "2RS", "clearance": "C3", "tolerance_class": "P0", "cage_type": "steel", "dynamic_load_kN": 22.1, "static_load_kN": 11.8, "fatigue_load_limit_kN": 0.5, "weight_g": 420, "weight_estimated": false, "temp_min_c": -40, "temp_max_c": 120, "standard": "ISO 15", "naming_rule_text": "the 80 mm outside diameter is the crowned track contact surface, the 35 mm bore takes the pin and the 17 mm overall width spreads the Hertzian contact across the thick-walled outer ring published ratings C 22.1 kN and C0 11.8 kN already include the outer-ring bending correction that track rollers require; the C/C0 ratio of 1.87 reflects a single deep groove ball set fatigue load limit Pu 0.5 kN against a 35 mm bore gives 0.63 kN per mm of bore, and the 4,500 r/min figure is a mechanical limit rather than a thermal one the maximum permissible radial loads are Fr 12.9 kN dynamically and F0r 18.3 kN statically; because the permissible static load is the lower of F0r and C0, the 11.8 kN figure governs static selection here the 17 mm width carries 1.30 kN per mm, the ring section measures 22.5 mm between bore and track surface, and 420 g over a 80x17 mm envelope is 0.309 g per mm2 of projected area for low-speed cam duty dimensionally this is a 62 dimension series of deep groove ball bearings at 35 mm bore with a thick-walled outer ring pushed out to 80 mm (the base bearing measures 72 mm); the additional ring wall is what resists bending when the roller is unsupported in a housing at 35 mm bore this is the largest cam roller listed; the 17 mm width gives 22.1 kN dynamic capacity but the limiting speed drops to 4,500 r/min, so it suits slow, heavily loaded cams the 3612 designation means the lightest cam roller design in the chapter, based on a single deep groove ball set; the R suffix marks the NBR contact seals that keep the factory grease fill in place for life the crowned running surface is standard on this design — the 80 mm ring is ground to a radius of 400 mm so that a slightly misaligned or deflecting track does not concentrate load on one edge typical duties are textile machinery cam gear, food processing index conveyors and packaging machine timing cams this size is regularly specified for textile machinery cam gear and food processing index conveyors, where the 80 mm ring rides the cam profile and the 35 mm bore takes a g6 pin the single ball row and the 17 mm wide ring make packaging machine timing cams a natural fit; the 420 g mass keeps the follower inertia low enough for rapid indexing cycles heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "applications": [ "packaging machine timing cams", "textile machinery cam gear", "glass handling line guides", "cam drives and indexing mechanisms" ], "failure_modes": [ "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway", "the NBR contact seals make this a greased-for-life unit; adding a relubrication line is pointless and forcing grease past the lips can dislodge them", "the permissible static load is the lower of F0r and C0, not C0 alone — sizing on C0 will overload the outer ring in a static or slow-motion cam position", "the pin must be machined to g6; an undersized or worn pin lets the inner ring creep and changes the effective internal clearance", "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life" ], "pitfalls": [ "the single row design has the lowest tilting-moment capacity in the chapter; if the cam track is not parallel to the roller axis, the load moves onto one edge of the ring", "heat stabilisation here only reaches 120 degC, so exposure to higher temperatures will dimensionally destabilise the rings and shorten the seal life", "the crowned running surface is standard, so the track must still be a smooth continuous profile — a step or weld spatter on the cam will brinell the ball raceway" ], "faq": [ { "q": "What are the dimensions of 361207-R?", "a": "361207-R is a single row cam roller with a 35 mm bore, 80 mm outside diameter and 17 mm overall width. The 80 mm ring is the track contact surface and the 35 mm bore takes a pin machined to tolerance class g6." }, { "q": "What does the R designation mean?", "a": "361207 R is the SKF catalogue designation: the 3612 prefix fixes the single row deep groove basis with a thick-walled outer ring, and the R suffix means NBR contact seals on both sides." }, { "q": "What is the load capacity of 361207-R?", "a": "The basic dynamic load rating C is 22.1 kN and the basic static load rating C0 is 11.8 kN, both already corrected for outer-ring bending. The maximum permissible radial loads are Fr 12.9 kN and F0r 18.3 kN, and the permissible static load is the lower of F0r and C0." } ], "cross_ref": [], "source_ref": "https://cdn.skfmediahub.skf.com/api/public/0901d196802809de/pdf_preview_medium/0901d196802809de_pdf_preview_medium.pdf", "catalog_ver": "SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers", "extracted_at": "2026-10-14", "last_verified": "2026-10-14", "confidence_score": 0.7, "status": "published", "aliases": [ "361207-R", "361207 R" ], "locale_variants": {}, "limiting_speed_rpm": 4500, "max_rpm": 4500 } ]