Patent ID: 8708570

Claim:
A bearing device for wheel, comprising: a bearing for wheel comprising: an outer member having an inner periphery on which double row outer raceway surfaces are formed; and an inner member comprising a hub wheel to be mounted to a wheel and having an outer periphery on which double row inner raceway surfaces respectively facing the double row outer raceway surfaces are formed; a constant velocity universal joint comprising an outer joint member; and a recess-projection fitting structure, which is formable by press-fitting a projection portion provided to any one of a shaft portion of the outer joint member and a hole portion of the hub wheel and extending in an axial direction to another of the shaft portion of the outer joint member and the hole portion of the hub wheel so that a recessed portion is formed with the projection portion along the another of the shaft portion of the outer joint member and the hole portion of the hub wheel, and in which the projection portion and the recessed portion are held in intimate contact at a fitting part with each other, the hub wheel and the outer joint member being tightened to each other by screwing a bolt member into a bolt hole provided in the shaft portion of the outer joint member, the recess-projection fitting structure being allowed to be separated by being applied with a pulling-out force in the axial direction under a state in which the bolt member is removed, wherein the hub wheel comprises a receiving portion for the bolt member so that the hub wheel and the outer joint member are tightened with the bolt member to each other between the receiving portion and the bolt hole, and wherein the shaft portion of the outer joint member comprises a fit-in portion to be fitted along an inner periphery of the receiving portion under a state in which the recess-projection fitting structure is formed, the fit-in portion being used as a part for confirming a fitting condition of the recess-projection fitting structure.