Bearing apparatus for a wheel

摘要

A bearing apparatus for a wheel comprising a rolling bearing for rotatably supporting a wheel relative to a body of vehicle having double row rolling elements (20) arranged between an inner member 1 and an outer member (10); a wheel mounting flange (5) for fastening the wheel on a hub wheel (2); and an annular groove (7) formed on the wheel mounting flange (5) and having a predetermined width including hub bolts (6); characterized in that one side of the wheel mounting flange (5) at a region other than the annular groove (7) is formed as a cut-finished surface cut after the press fit of the hub bolts (6).