305805-C-2Z bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers) · extracted 2026-10-14

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 14 cam rollers); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.

Cross references & equivalents

No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.

How the 305805-C-2Z model number is decoded

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

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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