Deep Groove Ball Bearings SKF 6316 /C4

The SKF 6316 /C4 deep groove ball bearing, with an 80 mm bore and increased C4 bearing clearance, provides thermal clearance for demanding shaft mountings.

The 6316 /C4 deep groove ball bearing is a single-row rolling bearing designed for predominantly radial loads as well as moderate axial forces in both directions. SKF manufactures this model from standard rolling bearing steel (100Cr6) with a sheet steel cage. As an open design without integrated seals, the construction allows direct access to lubricant via the housing and remains dimensionally stable within a temperature range of -20 to +150 degrees. With a tolerance class of P0/PN (equivalent to ABEC 1), the bearing is suitable for standard industrial fit systems.

When is the 6316 /C4 deep-groove ball bearing with increased bearing clearance used?

This rolling bearing is primarily used where significant temperature differences occur between the shaft and the housing during operation. Typical applications include bearing arrangements involving thermal expansion of the shaft or rapidly changing operating conditions. As the outer ring is designed without a flange or ring groove, the component fits easily into cylindrical housing bores. The open design allows for flexible lubrication with oil or housing grease, tailored to the rotational speed and environmental conditions.

What are the advantages of the significantly increased C4 bearing clearance during assembly?

Bearing clearance class C4 has a noticeably greater radial clearance than standard clearance or C3. When inner rings are mounted on the 80 mm shaft with a tight press fit, the inevitable expansion of the raceway reduces the bearing clearance once installed. Additional heating of the shaft during operation further reduces this clearance. The significantly increased C4 bearing clearance accommodates these dimensional changes and helps to prevent internal stresses and premature overheating of the rolling elements.