| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rolling bearing unit structure for supporting a wheel, which has an outer race constituted by combining a ferrous alloy and a light alloy, and is capable of reducing its weight while ensuring the required strength and rigidity by devising the shape of a body part formed of the light alloy. <P>SOLUTION: The weight of an outer race 6a is reduced by forming recesses 32, 32 in a plurality of parts in the circumferential direction of an inner side surface in the axial direction of a stationary side flange 12a formed on an outer circumferential surface of a body part 28. Further, the strength and the rigidity of the outer race 6a are ensured while sections between the recesses 32, 32 adjacent to each other in the circumferential direction form reinforcing ribs 33, 33. <P>COPYRIGHT: (C)2013,JPO&INPIT |
