Spherical Roller Bearings SKF 23944 CC/W33

The SKF 23944 CC/W33 open spherical roller bearing combines a 220 mm bore with P5 running accuracy and a lubrication groove for demanding industrial applications.

The 23944 CC/W33 self-aligning roller bearing accommodates high radial loads and axial forces acting in both directions simultaneously. Its double-row barrel roller geometry automatically compensates for misalignment and shaft deflection during operation. SKF manufactures this open bearing from hardened standard roller bearing steel 100Cr6 with a sheet steel cage. With dimensions of 220 mm bore, 300 mm outside diameter and 60 mm width, the assembly is suitable for thermal loads between –30 and +200 degrees Celsius.

In which installation situations does the 23944 CC/W33 self-aligning roller bearing prove its worth?

Designs subject to high radial forces and potential misalignment utilise the spherical outer ring raceway to compensate for angular misalignment during operation without causing excessive edge stresses. Thanks to its open design without integrated seals, the bearing can be integrated directly into oil- or grease-lubricated housings and connected to existing lubrication circuits. The design is intended for continuous industrial rotational movements under high loads.

What is the function of the W33 lubrication groove and tolerance class P5?

The suffix W33 denotes an annular lubrication groove with lubrication holes in the outer ring. This allows grease or lubricating oil to be delivered precisely and evenly between the two rows of rollers to the contact surfaces of the rolling elements. The specification combines standard tolerances (PN) for the mounting dimensions with the increased running accuracy of tolerance class P5. This reduced radial runout supports low-vibration concentricity of the mounted shaft under normal radial bearing clearance.