DYNAMIC LOADS AND CAGE WEAR IN HIGH-SPEED ROLLING BEARINGS

Modeling of cage interactions and wear in ball and cylindrical roller bearings is considered for three types of loads: a stationary load, an unbalanced load rotating with the shaft and a radial load rotating at half the shaft speed. For the ball bearing excessive cage wear is simulated in the case when the radial load rotates at half the shaft speed, and the behavior is found to be closely similar for both outer and inner race-guided cages. In the roller bearing, the cage interactions are found to be relatively more severe and insensitive to applied load variations with the inner race-guided cage. With an outer race guidance, cage whirl is only seen when the load rotates at half the shaft speed, under which conditions the cage interactions are higher than those seen under the other two types of load conditions.