Sliding material and bushing type selection guides
In the following sections, all bushing types are compared against each other based on their main technical data. For detailed information and values, refer to the relevant bearing data sections under Bushing data, Thrust washer data, or Strip data.
For additional information, contact the SKF application engineering service.
Ambient temperature range
Diagram 1 compares the permissible ambient temperature ranges of the different bushing types and sliding materials under normal operating conditions. The temperature ranges for SKF solid and wrapped bronze bushings can be extended by using special lubricants.
Coefficient of friction
Diagram 2 compares the coefficient of friction under dry or initially lubricated operating conditions of different SKF sliding materials.
The surface roughness often has a significant influence on service life. However, a surface roughness with a value greater than 0,4 mm may have a negative effect.
The heavier the load, the harder the shaft should be. The higher the risk for embedded contaminants, the more a harder shaft is required.
Diagram 5 compares the SKF shaft recommendations for ISO tolerance classes, surface roughness and hardness of different SKF sliding materials.