Patent ID: 7828483

Claim:
An outer ring assembly for an angular contact ball bearing, comprising: an outer ring that includes a first end surface, a second end surface and a raceway surface; a plurality of balls disposed on the raceway surface; a cage that holds the balls and includes a third end surface and a fourth end surface, the third end surface comprising a diameter greater than a diameter of the fourth end surface; wherein the outer ring assembly accommodates another outer ring assembly stacked on the outer ring assembly in an assembled state that the balls and the cage are incorporated in the outer ring, wherein the first end surface of the outer ring is disposed axially inwardly of the third end surface of the cage, wherein, when the outer ring assembly is disposed with the second end surface of the outer ring directed downward, the second end surface of the outer ring and the fourth end surface of the cage are disposed flush with each other, and wherein a plurality of protruding portions, for abutting against an end surface of a cage of said another outer ring assembly when the outer ring assembly and said another outer ring assembly are stacked together, are formed on one of an inner peripheral surface of the cage adjacent to the third end surface of the cage and an outer peripheral surface of the cage adjacent to the fourth end surface of the cage and are arranged at a predetermined intervals.