Spherical roller bearings are particularly suitable for applications with shaft deflection and / or misalignment of the shaft relative to the housing.

They consist of a solid outer ring with double row, concave raceways, a solid inner ring with a cylindrical or tapered bore as well as barrel rollers with a cage. The symmetrical barrel rollers on the concave outer ring raceway adjust themselves and thus compensate. They are able to support extremely high radial loads and can support axial loads in both directions at the same time.


Bearings of series 222 to 232 with a tapered bore (suffix K) have a bore taper of 1:12. All other series have a bore taper of 1:30.

Spherical roller bearings with a tapered bore are usually mounted on a shaft using an adapter or withdrawal sleeve.
NKF offers spherical roller bearings in the following series:


Series 222

Series 223

Series 230

Series 231

Series 232

Series 239

Series 240

Series 241

Series 248

Series 249


The main dimensions of spherical roller bearings comply with DIN 635-2 / ISO 15.

The dimension, form and position tolerances comply with the tolerance class PN according to DIN 620-2 / ISO 492.


NKF Kugel- und Rollenlagerfabrik GmbH

Josef-Orlopp-Straße 32-36

10365 Berlin