| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing device for a wheel improved in durability while enhancing the creep resistance of an inner ring fixed in a hub ring. SOLUTION: In this bearing device for the wheel, the pair of inner rings 5, 5' are fixed axially by a caulked part 8 formed by plastically deforming the end of the small-diameter stepped part 1b of the hub ring 1 radially outward. In the shoulder part 1a of the hub ring 1, and the large end surface 5d of the inner ring 5 on the outer side abutting against this shoulder part 1a, a recessed/protruded part extended radially is formed. Moreover, in the small end surfaces 5f, 5f' of the pair of inner rings 5, 5' abutting against each other, a recessed/protruded part is formed. The recessed/protruded parts are engaged with each other, and the relative rotation is prevented to prevent the creep that occurs in the fitting surface between the pair of inner rings 5, 5' and the small-diameter stepped part 1b of the hub ring 1, and improve the durability. COPYRIGHT: (C)2010,JPO&INPIT
|
