Loading on most bearings can be resolved into thrust and/or radial loading as shown in Figures 2-5A and 2-5B.

Most large diameter bearings also transmit moment loading which is resolved into thrust in one direction on one side of the bearing and thrust in the opposite direction at the other side. See Figure 2-5C. Most large diameter bearing applications involve low speed, intermittent rotation. As a consequence, most big bearings are selected based upon their static raceway capacity. Static raceway capacity refers to the ability of the bearing's raceway to resist permanent deformation when under load.

Bearings which will be subjected to frequent or continuous rotation may require consideration of dynamic raceway capacity. The dynamic raceway capacity is the ability of the bearing to resist fatigue failure of the raceway surfaces and/or rolling elements after prolonged rotation.

All of the ratings included on this site and all of the load calculation procedures are based upon static raceway capacity limitation. Applications which require continuous or frequent rotation should be referred to Avon Engineering. Avon will provide dynamic raceway capacity data and life calculations. See Static and Dynamic Load Analysis

Figure 2-5 A Thrust (or Axial) Load
Figure 2-5B Radial Load
Figure 2-5C Moment Load