Basic rating life
Composite bushings and thrust washers
The basic rating life of a composite plain bearing is expressed in number of oscillations or revolutions, or in operating hours. It represents the operating period under test conditions that is ended when one of the criteria for the end of the basic rating life is reached. Those criteria can be:
- increase in operating clearance
- plastic deformation of the sliding layer
Bronze, polyamide and filament wound bushings and strips
It is not meaningful to try to calculate the basic rating life for these products. In practice, the various influences and factors that affect the service life actually achieved, interact in a very complex manner and are not always completely quantifiable.
For additional information in case of inadequate experience with regard to the probable life of a bushing or in choosing an appropriate bushing size, contact the SKF application engineering service.