| 摘要 |
A bearing device for a wheel has a rolling bearing (2); an inner shaft (1), on the outer periphery of which an inner ring (24) of the rolling bearing (2) is installed; a coupler ring (3) fitted to an end of the inner shaft (1); and a staking part (15) formed at the end of the inner shaft (1) to fix the coupler ring (3) and the rolling bearing (2) to the inner shaft (1) in such a way that they cannot move in the axial direction of the inner shaft (1). The outer diameter dl of the coupler ring (3) is set smaller than the diameter d2 of the shoulder part (23c) of the inner ring (24). Alternatively, projection parts (231, 301) are formed on either of mutually facing end faces of both the coupler ring (3) and the inner ring (24), which causes the coupler ring (3) to be disposed away from a seal member (26). Consequently, interference between the coupler ring (3) and the seal member (26) is prevented. |
