Spherical Roller Bearings SKF 22330 CCK/W33

The SKF 22330 CCK/W33 spherical roller bearing combines a 150 mm tapered bore with P5 running accuracy for demanding heavy-duty applications.

The 22330 CCK/W33 self-aligning roller bearing is an open, double-row rolling bearing in the SKF Explorer performance class. It accommodates high radial forces as well as axial loads acting in both directions and automatically compensates for misalignment or shaft deflection. With key dimensions of a 150 mm bore, 320 mm outer diameter and 108 mm width, this version, made from 100Cr6 bearing steel, meets industrial requirements within a temperature range of -30 to +200 degrees.

In which applications does the 22330 CCK/W33 spherical roller bearing prove its worth?

This self-aligning roller bearing is primarily used in heavy-duty industrial gearboxes and general mechanical engineering assemblies subject to high radial forces. Thanks to the hollow spherical raceway of the outer ring, the bearing compensates for misalignment between the inner and outer rings without causing an unacceptable increase in friction. The sheet steel cage guides the symmetrical barrel rollers precisely, even under varying loads, whilst the open design facilitates flexible operation in housings lubricated with oil or grease on site.

What are the distinctive features of the tapered bore and the W33 system?

The suffix ‘K’ denotes the tapered bore with a taper ratio of 1:12. This geometry allows for fixed mounting directly onto tapered shaft seats or, using shrink sleeves and withdrawal sleeves, onto cylindrical shafts. Fresh lubricant is fed directly into the bearing assembly via the W33 lubrication groove and the lubrication holes in the outer ring. Together with the increased P5 running accuracy combined with standard dimensional accuracy PN, this design ensures low-vibration concentricity in rotating machinery.