Patent ID: 6729769
Filing Date: 2004-05-04
Classification: B21J,B21K,B60B,F16C

Abstract:
A bearing apparatus for a drive wheel comprising:a tire wheel bearing portion in which a rolling element is assembled between an outer member having a mounting flange for mounting to a vehicle body and an inner member having a tire wheel mounting flange for mounting a tire wheel so as to rotatably support said inner member; a constant velocity joint portion provided at one end of a drive shaft and including an outer joint member having a track groove formed on an inner periphery, an inner joint member having a track groove formed on an outer periphery and opposing the track groove of the outer joint member, and a ball assembled between the track groove of the outer joint member and the track groove of the inner joint member; a rotation of the outer joint member in the constant velocity joint portion being transmitted to the inner member of the tire wheel bearing portion, wherein a hardened serration portion of the outer joint member is fit to the inner member, and the outer joint member has a caulked portion that is not hardened.