JP2022149890A5 - - Google Patents

Claims (4)

an outer member that includes an outer ring raceway surface on its inner periphery and that can be assembled to a mating member;
an inner member that includes an inner ring raceway surface on its outer periphery and faces the inner periphery side of the outer member;
a rolling element disposed between the outer ring raceway surface and the inner ring raceway surface,
The outer member includes a rib portion in which a mounting flange is integrally included with the outer member, and a non-rib portion other than the rib portion,
The mounting flange is included in a circumferential portion of the outer member so as to protrude in a radial direction with respect to the non-rib portion,
In both the rib portion and the non-rib portion, a fiber angle defined as an angle between the fiber flow adjacent to the outer ring raceway surface and a tangent to the outer ring raceway surface at a contact point with the rolling element is uniform. A bearing device for wheels. The variation in the fiber angle including the rib portion and the non-rib portion is 10° or less,
The wheel bearing device according to claim 1, wherein the fiber angle at the rib portion and the fiber angle at the non-rib portion are both 15° or less. The outer member includes a double row of the outer ring raceway surfaces along the axial direction,
In the double row outer ring raceway surface, a variation in the fiber angle including the rib portion and the non-rib portion is 10° or less,
The wheel bearing device according to claim 2, wherein, in the double-row outer ring raceway surface, the fiber angle at the rib portion and the fiber angle at the non-rib portion are both 15° or less. The wheel bearing device according to any one of claims 1 to 3, wherein the fiber angle is uniform over the entire circumference of the outer member.