The Rzeppa or fixed ball-type
joint consists of an inner ball race, six balls, a cage to position
the balls, and an outer housing'(Figure 38-3).
Tracks machined in the inner race and outer housing
allow the joint to flex. The inner race and outer housing
form a ball-and-socket arrangement. The six balls
serve both as bearings between the races and the means
of transferring torque from one to the other.