Question 93Motor Plants - QMED

The correct answer is A) It turns with the shaft and the pivot shoes do not rotate. In a Kingsbury thrust bearing, the thrust collar is the component that is attached to and rotates with the shaft. The pivot shoes, which are the bearing surfaces that the thrust collar rests on, remain stationary and do not rotate. This design allows the thrust collar to transfer the axial load from the shaft to the stationary pivot shoes, which in turn distribute the load to the bearing base. The other answer choices are incorrect because B) the thrust collar is the rotating component, not the stationary one, C) the thrust collar is not turned by the base ring, and D) the thrust collar is held in position by its attachment to the rotating shaft, not the bearing base ring.