Spherical Roller Bearings SKF 22228 CCK/C3W33

The SKF 22228 CCK/C3W33 self-aligning roller bearing, measuring 140 x 250 x 68 mm, offers high load-carrying capacity, a tapered bore and C3 clearance for demanding industrial applications.

The SKF 22228 CCK/C3W33 self-aligning roller bearing automatically compensates for misalignment and shaft deflection during operation. This double-row roller bearing has a tapered bore measuring 140 mm, an outer diameter of 250 mm and a width of 68 mm. Manufactured from standard 100Cr6 rolling bearing steel, this open bearing offers thermal stability within a temperature range of -30 to +200 degrees. A robust sheet steel cage reliably guides the rollers and withstands mechanical loads.

In which applications does the 22228 CCK/C3W33 self-aligning roller bearing prove its worth?

Designs subject to heavy radial loads and axial forces constitute the primary field of application for this design. Thanks to the hollow-spherical outer ring raceway, the bearing flexibly compensates for misalignment between the shaft and housing. Typical applications can be found in heavy-duty mechanical engineering and in industrial shaft bearings subject to high impact forces. The circumferential lubrication groove, together with the integrated lubrication holes in the outer ring, directs fresh lubricant directly between the two rows of rollers and promotes low-friction operation.

What are the advantages of the tapered bore and the C3 clearance?

The tapered bore with a taper ratio of 1:12 allows for secure mounting directly onto tapered shaft seats or using suitable mounting and withdrawal sleeves. The operating clearance can be precisely adjusted by axial sliding. The C3 designation indicates a slightly increased radial clearance. This additional clearance compensates for the inevitable reduction in radial clearance when the inner ring is tightened, as well as for thermal expansion due to heating. The design is complemented by the enhanced running accuracy of class P5.