Cookies on the SKF website

SKF uses cookies on our websites to align the information shown as closely as possible to our visitors’ preferences, such as country and language choices.

Will you accept SKF cookies?

Bearing data

Dimension standardsBoundary dimensions:
ISO 12240-2:1998

ISO 12240-2:1998 (table 1)


Inner and outer rings: through-hardened and ground bearing steel
Inner ring sliding surface: hard chromium plated and coated with a mineral oil based, lithium soap thickened grease

Sliding layer of fibre reinforced polymer, containing PTFE, is injection moulded onto the outer ring (fig. 1)

Permissible operating temperature range

-40 to +75 °C (-40 to +165 °F), for brief periods up to +110 °C (+230 °F);
reduced load carrying capacity at temperatures above +50 °C (+120 °F); 

For additional information, contact the SKF application engineering service.

Radial internal clearance, preload

The internal clearance of a single angular contact spherical plain bearing is only obtained after mounting and depends on the adjustment against a second bearing that provides axial location in the opposite direction. Angular contact spherical plain bearings are generally mounted as pairs in a back-to-back (fig. 2) or face-to-face arrangement (fig. 3). The bearings are adjusted against each other by axially displacing one bearing ring until a specific bearing load of 10 N/mm2 is obtained. The preload prevents some of the deformations that typically occur under load and after a brief running-in period. When adjusting a new bearing arrangement for the first time, the specific bearing load of 10 N/mm2 is achieved when the frictional moment and the axial preload force are in the ranges listed in table 2.
SKF logo