Deep Groove Ball Bearings FAG 6216 -C4

The FAG 6216 -C4 deep groove ball bearing, with an 80 mm bore and a significantly increased C4 radial clearance, is designed for applications involving elevated operating temperatures.

The FAG 6216-C4 open deep groove ball bearing is a single-row radial ball bearing conforming to standard tolerance class P0/PN. With its main dimensions of 80 mm inner diameter and 140 mm outer diameter, and a width of 26 mm, it primarily accommodates radial loads as well as moderate axial forces in both directions. Manufactured from standard rolling-bearing steel 100Cr6 and fitted with a sheet steel cage, this rolling bearing covers a temperature range from -30 to +150 degrees.

When is the 6216-C4 deep groove ball bearing with C4 clearance used?

This single-row radial ball bearing is designed for bearing locations where noticeable temperature differences between the inner and outer rings occur during operation. Thermal expansion reduces the internal bearing clearance, which is why the significantly increased radial clearance (C4) counteracts the risk of the rolling elements becoming jammed. Typical applications include industrial applications subject to thermal stress and shaft bearings with high operating temperatures. The open design is suitable for housing constructions with external oil or grease lubrication.

What does the C4 bearing clearance mean for this rolling bearing?

Bearing clearance describes the radial clearance between the balls and the raceways prior to installation, when the bearing is unloaded. The designation C4 stands for a significantly increased bearing clearance, which exceeds both the standard clearance and the C3 grade. This variant is used when tight fits on the shaft or housing restrict the operating clearance or when thermal expansion occurs. In the open design, a housing seal provided by the customer ensures protection against dirt and moisture.