Deep Groove Ball Bearings SKF 6217 /C4

The SKF 6217 /C4 deep groove ball bearing, measuring 85x150x28 mm and featuring significantly increased radial clearance, ensures reliable operation at high operating temperatures.

This single-row deep groove ball bearing 6217 /C4 from SKF is designed primarily to withstand radial loads as well as moderate axial forces in both directions. Manufactured from standard 100Cr6 rolling bearing steel, this bearing is characterised by its dimensional stability and load-carrying capacity. As this is an open bearing without integrated sealing washers, the lubricant circulates freely between the raceways and the robust sheet steel cage. This design provides a suitable basis for demanding thermal environments.

What is the 6217 /C4 deep groove ball bearing suitable for?

Typical applications for this rolling bearing include general mechanical engineering and thermally demanding industrial drives. The open design allows for direct integration into centralised oil circulation lubrication systems or housings with defined grease lubrication. Thanks to its precise manufacture to tolerance class P0/PN (ABEC 1), the deep groove ball bearing is suitable for shaft designs with uniform radial guidance. Design engineers and maintenance personnel specifically opt for this variant when designs require an unobstructed supply of lubricant and a clean, sealed bearing housing provides external protection.

What are the advantages of the increased C4 radial clearance?

The internal radial clearance C4 is significantly greater than the standard value for normal bearings and also exceeds class C3. This increased radial clearance counteracts stress in the bearing caused by significant temperature differences between the inner and outer rings. If, during operation, the shaft heats up and expands more than the surrounding housing, the radial clearance compensates for this difference. Furthermore, bearing clearance class C4 compensates for the reduction in bearing clearance that occurs with tight press fits on the 85 mm shaft or in the 150 mm housing bore.