Patent ID: 8043009
Filing Date: 2011-10-25
Classification: B60B,F16C

Abstract:
1. A method for manufacturing a hub unit, said method comprising: providing an outer ring member; providing a hub body which is disposed concentrically and rotatably with respect to the outer ring member around an axis of the hub body on a plurality of rolling elements such that a rolling element arranging space is defined between the outer ring member and the hub body along an axial direction of the hub body; providing a seal member for sealing the rolling element arranging space provided at one or both of a plurality of end portions of the rolling element arranging space in relation to the axial direction of the hub body, whereby the rolling element arranging space comprises a semi-hermetically closed construction which has no other leak path through which a gas within the rolling element arranging space leaks out to the outside of the hub unit than a sealing surface by the seal member; providing an inert gas in the rolling element arranging space; and defining the rolling element arranging space by assembling together the outer ring member, the plurality of rolling elements, the hub body and the seal member, wherein the defining the rolling element arranging space is implemented in an atmosphere which is filled with the inert gas for filling in the rolling element arranging space.