Abstract: A pivoting ball bearing. The ball bearing includes a first race and a second race and one or more rows of balls disposed therebetween. The first race includes a groove configured to have at least one row of balls track therein at a continuously variable circumferential tracking path while the first race rotates with respect to the second race. Pivoting of the first race with respect to the second race can occur by the balls shifting their circumferential tracking path within the groove of the first race. A collar on either the first race or the second race limits pivoting of the first race with respect to the second race.