Vehicle bearing assembly

摘要

A vehicle bearing assembly (1) includes a sensor mounting hole (35) provided in a cover (33) of an outer ring member (22); a rotational speed sensor (34) that is inserted in the sensor mounting hole (35); and an O-ring (41) disposed between an inner peripheral surface of the sensor mounting hole (35) and an outer peripheral surface of the rotational speed sensor (34). A chamfered portion (44) is formed along the edge of the opening of the sensor mounting hole (35) on the outer face of the cover. A chamfer edge portion (43) as the boundary between the inner peripheral surface of the sensor mounting hole (35) and the chamfered portion (44) has a depth in the axial direction.