Deep Groove Ball Bearings SKF 6317 -2Z/C3

The SKF 6317 -2Z/C3 deep groove ball bearing, with dimensions of 85x180x41 mm, C3 clearance and cover plates on both sides, offers reliable operation at higher operating temperatures.

The SKF 6317 -2Z/C3 deep groove ball bearing is a single-row rolling bearing designed to accommodate radial and axial loads in both directions. Manufactured from tried-and-tested standard roller bearing steel (100Cr6), the bearing has a bore of 85 mm, an outside diameter of 180 mm and a width of 41 mm. The cylindrical outer ring is designed without a flange or groove. An integrated sheet steel cage guides the rolling elements precisely through the deep raceways, whilst the metal shields on both sides protect the bearing’s interior from coarse dirt particles.

What are the key operational characteristics of the 6317-2Z/C3 deep groove ball bearing?

This design is intended for demanding bearing arrangements subject to high radial loads and moderate axial forces. The cover plates on both sides, made of profiled sheet steel, form a narrow, non-contacting sealing gap with the inner ring. This reliably keeps out solid dirt particles and reduces lubricant leakage without generating additional frictional heat through sliding contact. The bearing therefore achieves high speeds whilst providing effective basic protection.

What is the advantage of the C3 radial clearance in the 6317 deep-groove ball bearing?

The suffix C3 denotes a slightly increased radial clearance compared with the standard version. This additional internal clearance between the rolling elements and raceways compensates for thermal length changes when temperature differences occur between the inner and outer rings during operation. Furthermore, the C3 clearance prevents the bearing from seizing if tight interference fits on the 85 mm shaft or in the housing reduce the bearing clearance during installation.