Patent ID: 8029195

Claim:
A vehicular-wheel bearing assembly comprising: an inner shaft; an outer ring provided around the inner shaft; and a rolling element provided between said inner shaft and said outer ring, wherein an annular raceway member with a curved section that is a separate member from said inner shaft and said outer ring and has a raceway surface for said rolling element is provided on a mounting peripheral surface of at least one of an outer peripheral surface of said inner shaft and an inner peripheral surface of said outer ring, and said mounting peripheral surface has a first straight peripheral surface that is in contact with said raceway member and extends straight in parallel with an axis, and a second straight peripheral surface that is in contact with said raceway member and extends straight in a direction inclined with respect to the axis, and wherein said raceway member has a third straight peripheral surface that is in surface contact with said first straight peripheral surface and extends straight in parallel with the axis, and a fourth straight peripheral surface that is in surface contact with said second straight peripheral surface and extends straight in a direction inclined with respect to the axis.