Patent ID: 8313244

Claim:
A wheel bearing assembly, comprising: a wheel hub having a hollow hole formed in a shaft center portion, an annular protrusion provided on an outer end surface, and a calk fixation portion of the outer end surface which is located between the hollow hole and the annular protrusion; and a constant-velocity joint outer ring having a center shaft portion, and a tubular protrusion formed on an end portion of the center shaft portion, wherein a length of the annular protrusion in an axis direction, or an oscillation angle through which a center axis of a calk jig is oscillatingly turned relative to a center axis of the constant-velocity joint outer ring, is restricted so that the annular protrusion and the calk jig do not interfere with each other when the constant-velocity joint outer ring is calk-fixed to the calk fixation portion of the wheel hub by bending the tubular protrusion radially outward through oscillating turn of the calk jig after the center shaft portion of the constant-velocity joint outer ring has been fitted to the hollow hole of the wheel hub, wherein a fitting between the hollow hole of the wheel hub and the center shaft portion of the constant-velocity joint outer ring comprises a spline fitting, wherein an outer surface of a calked portion is formed by bending the tubular protrusion of the constant-velocity joint outer ring, wherein the outer surface has a construction in which an inclination angle of the outer surface toward an inner side with respect to a direction radially outward from the center axis of the center shaft portion in a plane that is substantially perpendicular to the center axis, and wherein and the inclination angle is in a range of −5 degrees to 15 degrees.