305807-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 305807-C-2Z model number is decoded

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

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 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