| abstract |
(57) [Problem] To provide a bearing device for a drive wheel that does not require resetting of a preload even if a constant velocity universal joint is detached. SOLUTION: A hub wheel 37 and an inner ring 38 are formed as an integrated unit by a plastic coupling portion 41a, caulking portions 66, 93 and the like. Serration 4 is applied to the outer member 34 of the constant velocity universal joint 31. 2, 44 (65, 67) and the like, and is torque-coupled to the hub wheel 37. The serrations 42, 44 (65, A detachable retaining ring 46 (61) is attached to 67) to prevent the serrations 42, 44 (65, 67) from coming off in the axial direction, and to allow one-touch attachment / detachment. |