Spherical Roller Bearings SKF 22228 CC/W33

The SKF 22228 CC/W33 open spherical roller bearing has a 140 mm bore, an outer diameter of 250 mm and a lubrication groove for demanding industrial applications.

The 22228 CC/W33 self-aligning roller bearing accommodates high radial loads and axial forces acting in both directions simultaneously. Thanks to the hollow-spherical outer ring raceway, this design automatically compensates for misalignment and shaft deflection during operation. The open design, made from standard rolling-bearing steel (100Cr6), is rated for operating temperatures ranging from –30 to +200 degrees. A guided sheet-steel cage maintains the correct spacing between the rolling elements and ensures even load distribution.

In which installation situations does the 22228 CC/W33 self-aligning roller bearing prove its worth?

This double-row roller bearing is suitable for heavy mechanical loads on shafts with a diameter of 140 mm, where misalignment between the inner and outer rings may occur. The bearing compensates for misalignment through angular movement without additional edge pressures overloading the rollers. The version with standard radial clearance is intended for installation situations with standard fits and balanced temperature conditions between the bearing rings.

What are the functions of the lubrication groove and P5 running accuracy?

The suffix W33 denotes an annular lubrication groove with lubrication holes in the outer ring. This design facilitates the supply of lubricant directly between the two rows of rollers. The combination of PN dimensional accuracy and the tighter P5 running accuracy supports low-vibration concentricity of rotating machine components.