To provide a wheel bearing device and an axle module capable of suppressing rattling in a circumferential direction, excellent in the connection work efficiency of a hub wheel and an outer joint member of a constant velocity universal joint, capable of separating the hub wheel and the outer joint member of the constant velocity universal joint, and excellent in maintenance property.
Projections 35 formed at either of an outer diameter surface of a shaft 12 at an outer coupling member and an inner diameter surface of a hole 22 of the hub wheel 1 and extending in an axial direction are pressure-fitted to the other along the axial direction. Recesses 36 closely fitted to the projections 35 are formed at the other by the projections 35 to constitute a recess/projection fitting structure M that the whole area of the fitting contact portion of the projections 35 and the recesses 36 is closely adhered. A raceway surface 29 at an inboard side of the rolling bearing 2 is formed on an outer diameter surface of the outer joint member. The recess/projection fitting structure M allows separation by giving a drawing force in the axial direction.
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Yoshiyuki Shiraishi
Kunihiko Shiromura
Next Patent: WHEEL BEARING DEVICE AND AXLE MODULE