Bearing device for wheel

A bearing device for wheel, comprising:

• a bearing for wheel comprising:
• an outer member having an inner periphery on which double row outer raceway surfaces are formed;
• an inner member comprising a hub wheel to be mounted to a wheel and having an outer periphery on which double row inner raceway surfaces respectively facing the double row outer raceway surfaces are formed;
• and
• a plurality of double row rolling elements interposed between the double row outer raceway surfaces and the double row inner raceway surfaces;
• a constant velocity universal joint comprising an outer joint member;
• and
• a recess-projection fitting structure, which is formable by press-fitting a projection portion provided to any one of a shaft portion of the outer joint member and a hole portion of the hub wheel and extending in an axial direction to another of the shaft portion of the outer joint member and the hole portion of the hub wheel so that a recessed portion is formed with the projection portion along the another of the shaft portion of the outer joint member and the hole portion of the hub wheel, and in which the projection portion and the recessed portion are held in intimate contact over an entire fitting part with each other,
• the hub wheel and the outer joint member being tightened to each other by a bolt member screwed into a bolt hole provided in the shaft portion of the outer joint member, the recess-projection fitting structure being allowed to be separated by being applied with a pulling-out force in the axial direction under a state in which the bolt member is removed,
• wherein the hub wheel has a receiving surface, which is formed directly or through intermediation of a separate member, for the bolt member so that the hub wheel and the outer joint member are tightened with the bolt member to each other between the receiving surface and the bolt hole,
• wherein a guide portion for guiding the press-fitting of the projection portion is provided at an end portion on a press-fitting start side of the another of the shaft portion of the outer joint member and the hole portion of the hub wheel, and
• wherein a length of the bolt member is set so that, at re-assembly of the recess-projection fitting structure after separation of the recess-projection fitting structure, a male threaded portion of the bolt member having a seat surface held in abutment against the receiving surface is free from being engaged with a female threaded portion of the bolt hole until an end portion on the press-fitting start side of the projection portion is fitted to the guide portion.