Deep Groove Ball Bearings SKF 6215 /C4

The SKF 6215/C4 deep groove ball bearing with a 75 mm bore offers significantly increased radial clearance for industrial applications subject to thermal stress.

The SKF 6215/C4 deep groove ball bearing is a single-row radial ball bearing designed for demanding industrial applications. With a bore of 75 mm, an outer diameter of 130 mm and a width of 25 mm, this rolling bearing primarily withstands radial loads. Manufactured from standard 100Cr6 rolling-element bearing steel in combination with a sheet steel cage, it offers mechanical stability in continuous operation. Thanks to its standard tolerance design in accordance with P0 and ABEC 1, the component fits precisely into existing shaft and housing seats.

What is the 6215 /C4 deep groove ball bearing suitable for in operation?

The 6215 /C4 deep groove ball bearing is well-suited for use in industrial drives and rotating units where temperature differences occur between the shaft and the housing. Designs with operating temperatures ranging from -20 to +150 degrees use this rolling bearing to compensate for thermal expansion without causing stress. As an open radial ball bearing without a flange or groove on the outer ring, it can be easily integrated into lubrication circuits using oil or grease.

What does the C4 bearing clearance mean for your design?

The C4 designation indicates a significantly increased radial clearance, which exceeds the standard clearance and Class C3. This increased clearance between the inner ring, outer ring and rolling elements serves to compensate for thermal expansion of the shaft. In addition, the C4 clearance compensates for the loss of radial clearance when tight press fits are fitted onto the shaft. As this SKF bearing is of an open design, designers incorporate an external seal into the housing to keep out contaminants and prevent lubricant loss.