Markings on bearings
- SKF trademark
- Complete designation of the bearing
- Country of manufacture
- Date of manufacture, coded
- Identification/serial number of the shaft washer / inner ring
- Identification number on the housing washer (for BTW series only)
Identification numbers on BTW series bearings
Identification numbers on BTM series bearings
A “V-shaped” marking on the outside surface of the outer rings indicates how the bearings should be mounted to obtain the proper preload in the set (fig. 2).
The deviation of the mean bore diameter from nominal in microns is marked on the inner ring side face.