Patent ID: 8434947

Claim:
A sensor-equipped wheel support bearing assembly for rotatably supporting a vehicle wheel relative to a vehicle body structure, comprising: an outer member having an inner periphery formed with a plurality of rows of rolling surfaces; an inner member having an outer periphery formed with rolling surfaces opposed respectively to the rolling surfaces of the outer member; a plurality of rows of rolling elements interposed between the opposed rolling surfaces in the inner member and the outer member; and a sensor unit, provided on an outer diametric surface of the outer member, the sensor unit including a strain generating member having two contact fixing segments secured to the outer diametric surface of the outer member in contact therewith, and a sensor fitted to the strain generating member for detecting a strain occurring in the strain generating member, wherein the two contact fixing segments in the sensor unit are arranged along an axial direction of the outer member, the strain generating member in the sensor unit has a cutout portion and the sensor is provided in the proximity of this cutout portion, the strain generating member has a surface portion, positioned on a radially outer side of one of the contact fixing segments that is positioned on an outboard side, configured to have a shape effective to avoid interference with hub bolts, and an outboard corner portion of the surface portion of the strain generating member is chamfered to provide a chamfered corner portion of a shape effective to avoid interference with the hub bolts.