Patent ID: 8052332

Claim:
A wheel bearing assembly comprising: a wheel hub having a hub spindle, and a central hole that penetrates the hub spindle; a rolling bearing provided on an outer periphery of the hub spindle of the wheel hub; a constant-velocity joint outer ring having an end wall portion, a penetration hole that penetrates the end wall portion, and a first spline provided on an outer end surface of the end wall portion; a link bolt that has a shaft portion, a head portion provided on an inner end of the shaft portion, and an external threaded portion provided on an outer end of the shaft portion, and that links the wheel hub and the constant-velocity joint outer ring; and a lock nut that is screwed to the external threaded portion of the link bolt, wherein a second spline is provided on at least one of an inner end surface of the hub spindle and an inner end surface of the rolling bearing, and wherein an outer surface of the head portion of the link bolt contacts an inner surface of the end wall portion of the constant-velocity joint outer ring, and the shaft portion of the link bolt is press-fitted into the penetration hole of the constant-velocity joint outer ring, and the external threaded portion of the link bolt is inserted through the central hole of the hub spindle, and the lock nut is fastened to the external threaded portion protruded from an outer end surface of the hub spindle, so that the wheel hub and the constant-velocity joint outer ring are linked with each other, and the first spline and the second spline are meshed with each other so as to be capable of torque transmission.