Method for processing shaft for hub unit

摘要

The present invention discloses a processing method for a shaft for a hub unit comprising a shaft body portion (2) and a radial outward flange (3) provided on one end thereof. The processing method comprises the steps of: machining, on a root portion (5) of the flange (3), an internal diameter surface (7) and a side (8) of an annular portion (6) extending in a direction of axis X-X of the shaft body portion (2) and in a direction opposite to the shaft body portion (2); and clamping the internal diameter surface (7) with the side (8) of the annular portion (6) being a reference, in which clamped state a flange side (9) on the annular portion (5) side and an outer peripheral surface (10) of the shaft body portion are machine-finished.