Spherical Roller Bearings SKF 22208 E/C3

The SKF 22208 E/C3 self-aligning roller bearing, with a 40 mm bore and increased C3 clearance, compensates for misalignment under high radial loads.

The 22208 E/C3 self-aligning roller bearing is a double-row roller bearing designed for demanding industrial applications. It accommodates high radial forces as well as combined axial loads in both directions. Thanks to the hollow spherical raceway in the outer ring, the bearing automatically adjusts itself in the event of misalignment or shaft deflection. With dimensions of a 40 mm bore, 80 mm outside diameter and 23 mm width, this version is suitable for standardised bearing housings.

In which installation situations does the 22208 E/C3 self-aligning roller bearing prove its worth?

This self-aligning roller bearing is primarily used for high radial loads and where shaft misalignment is to be expected. Designs subject to deflection or misalignment benefit from the angular adjustment capability. The integrated sheet steel cage provides stable guidance for the rolling elements, made from 100Cr6 bearing steel, under varying loads. With a permissible operating temperature range of –30 to +200 degrees, the component retains its dimensional stability even in thermally demanding environments.

What do the C3 bearing clearance and the lubrication groove mean for bearing selection?

The designation C3 indicates a slightly increased radial clearance compared with the standard version. This additional clearance between the rollers and raceways helps to prevent seizing when temperature differences occur between the inner and outer rings, or when tight fits cause the inner ring to expand. For lubricant replacement, the outer ring features a circumferential lubrication groove with lubrication holes. As this is an open bearing without integrated seals, sealing is provided by the surrounding bearing housing, which facilitates lubricant replacement whilst the bearing is in operation.