WHEEL ROLLING BEARING DEVICE

摘要

A wheel rolling bearing device includes an inner ring member fitted to an axle; an outer ring member having a fixing flange fixed to a vehicle body-side member; and rolling elements rollably arranged between the inner and outer ring members. An encoder and a rotation speed detector are respectively arranged at outer peripheral portions of inner end portions of the inner and outer ring members in the vehicle lateral direction. The rotation speed detector has a fixing portion fixedly arranged in a spatial region between the fixing flange and an outer periphery of the inner end portion of the outer ring member, and a nose portion extending obliquely from the fixing portion toward the encoder and having a detecting portion at its distal end portion. An oblique cutout face is formed in the outer ring member to avoid contact between the outer ring and the nose portion.