Spherical Roller Bearings SKF 22228 CC/C3W33

The SKF 22228 CC/C3W33 self-aligning roller bearing (140x250x68 mm) compensates for misalignment and accommodates heavy radial loads as well as combined axial forces at elevated operating temperatures.

The SKF 22228 CC/C3W33 self-aligning roller bearing is a double-row roller bearing designed for heavy-duty industrial applications. With a bore of 140 mm, an outer diameter of 250 mm and a width of 68 mm, this open bearing reliably absorbs radial and axial forces on both sides. Manufactured from standard 100Cr6 rolling-element bearing steel, the bearing operates within a temperature range of -30 to +200 degrees Celsius. Two integrated sheet steel cages guide the barrel-shaped rollers into the raceways, even under high loads.

What loads and operating conditions can the 22228 CC/C3W33 self-aligning roller bearing accommodate?

This self-aligning roller bearing is suitable for applications involving high radial forces and axial loads acting in both directions. Thanks to the hollow-spherical outer ring raceway, the roller assembly automatically adjusts itself in the event of shaft deflection or misalignment. This feature reduces the build-up of edge stresses on the roller bodies. At the same time, the combination of robust geometry and a temperature-resistant sheet steel cage ensures smooth running characteristics under demanding conditions.

What is the function of C3 bearing clearance and the W33 specification?

The C3 design features a radial clearance that is slightly greater than the standard value. This additional clearance prevents the rollers from seizing up when temperature differences occur between the inner and outer rings, or when tight fits cause the inner ring to expand. The designation W33 refers to a circumferential lubrication groove with lubrication holes in the outer ring. Maintenance personnel can use this to press fresh lubricant directly between the two rows of rollers, which simplifies the relubrication process.