Spherical Roller Bearings SKF 22212 EK/C3

The SKF 22212 EK/C3 self-aligning roller bearing with a 60 mm bore automatically compensates for misalignment and can accommodate high radial loads.

The 22212 EK/C3 self-aligning roller bearing is a double-row roller bearing made from standard rolling-element steel (100Cr6) with main dimensions of 60x110x28 mm. It features a common hollow-spherical outer ring raceway, which allows angular movements of the shaft to be compensated for. Designed as an open bearing with a sheet steel cage and increased radial clearance (C3), it is suitable for industrial applications with demanding operating conditions and a temperature range of -30 to +200 degrees.

In which applications is the 22212 EK/C3 self-aligning roller bearing used?

This rolling bearing is primarily used in bearing arrangements where shaft deflection or misalignment between the bearing positions may occur. Thanks to its barrel-shaped rollers, the bearing can accommodate high radial forces as well as axial forces acting in both directions. The lubrication groove integrated into the outer ring, complete with lubrication holes, facilitates relubrication whilst the bearing is installed, directly via the housing, thereby reducing maintenance requirements in mechanical drives.

What is the function of the tapered bore and the C3 clearance?

The tapered bore, with a taper ratio of 1:12, enables secure mounting on tapered shaft seats or using suitable mounting and withdrawal sleeves. In this process, the bearing clearance is reduced when the inner ring is pushed on axially. The slightly increased factory-set radial bearing clearance (C3) serves to compensate for this loss of clearance when the fit is tight. Furthermore, sufficient operating clearance is maintained in the bearing even during thermal expansion whilst the unit is in operation.