| 摘要 |
A bearing device for a wheel, in which circumferential play is suppressed and in which a hub ring and an outer ring of a constant velocity universal joint can be firmly and easily joined to each other. An axially extending projection is formed on a shaft section (12) of the joint outer ring (5), and the shaft section (12) is press-fitted into a hole (22) of the hub ring (1). By this press-fitting, a recess closely fitting on the projection is formed in the inner diameter surface of the hub ring (1) to form a recess/projection fit structure (M) in which the entire regions of those portions of the projection and the recess at which they are fitted to each other are in close contact with each other. The bearing device satisfies the relationship of 0.3 < d/2h < 0.86, where d is the press-fit interference of the projection relative to the hub ring (1) and h is the height of the projection. |
