Patent ID: 8678662

Claim:
A drive wheel bearing device comprising: an outer member having double-row outer races on an inner periphery thereof; an inner member including double-row inner races opposite the outer races of the outer member, a first inner member, and a second inner member formed with at least one of the double-row inner races, the first inner member and the second inner member being inseparably coupled together at a flange-like swaged portion that is formed by a radially outward plastic deformation of one end of the first inner member; double-row rolling elements interposed between the outer member and the inner member; and a constant velocity joint including an outer joint member press-fitted to an inner periphery of the first inner member with torque transmission means formed therebetween that transmits torque by engagement of a plurality of axially extending teeth, wherein torque transmitting teeth of the first inner member have a tooth profile that is controlled within a specified range over the entire axial length of the teeth, wherein the specified range is determined in accordance with a maximum permissible force required for press-fitting the outer joint member, wherein the specified range is determined such that the torque transmitting teeth have an over pin diameter with a dimensional tolerance of 60 μm.