| abstract |
(57) [Summary] [PROBLEMS] A hub wheel 10, a constant velocity universal joint 30, and a double row bearing 20 are unitized to form a double row inner race 12, Outer joint member of constant velocity universal joint 30 at least one of 42 In the bearing device for a drive wheel integrally formed with 40, the fitting portion between the hub wheel 10 and the outer joint member 40 is prevented from being loosened. SOLUTION: A stem portion 45 of an outer joint member 40 is connected to a hub wheel 10. Is formed on the inner peripheral surface of the hub wheel 10 and / or the outer peripheral surface of the stem portion 45, and the hollow stem portion 45 is expanded from the inner diameter side to the outer diameter side. By caulking, the hub wheel 10 and the outer joint member 40 are plastically connected. |