Patent ID: 8429823
Filing Date: 2013-04-30
Classification: B60B,F16C,Y10T

Abstract:
1. A hub unit manufacturing method for manufacturing a hub unit, the hub unit comprising: a shaft having a small diameter shaft portion and a large diameter shaft portion that connects to the small diameter shaft portion via a stepped portion and has an outside diameter larger than an outside diameter of the small diameter shaft portion and an outer peripheral raceway surface; an inner ring that is fit to the small diameter shaft portion of the shaft and has an outer peripheral raceway surface; an outer ring having a first inner peripheral raceway surface and a second inner peripheral raceway surface; a first rolling element placed in between the first inner peripheral raceway surface and the outer peripheral raceway surface of the shaft; and a second rolling element placed in between the second inner peripheral raceway surface and the outer peripheral raceway surface of the inner ring, the method comprising: placing the second rolling element in between the second inner peripheral raceway surface and an outer peripheral surface of the small diameter shaft portion as well as assembling the first rolling element in between the first inner peripheral raceway surface and the outer peripheral raceway surface of the large diameter shaft portion; measuring a first distance from a plane generally perpendicular to a central axis of the shaft to the second rolling element and a second distance from the plane to the stepped portion of the shaft; and adjusting a size in an axial direction of the inner ring based on a difference between the first distance and the second distance.