BEARING DEVICE FOR DRIVING WHEEL

PROBLEM TO BE SOLVED: To reduce product cost, while surely preventing a stick slip sound generated by sudden relative sliding between opposed surfaces of a bearing part and an outside joint member over a long period. SOLUTION: This bearing device for a driving wheel has an outer ring 50 forming double-row outside raceway surfaces 52 and 54 on the inner periphery, a hub wheel 10 and an inner ring 20 having a wheel installing flange 14 on one end and having double-row inside raceway surfaces 12 and 22 on the outer periphery, and double-row rolling elements 30 and 40 interposed between the outside raceway surfaces 52 and 54 of the outer ring 50 and the inside raceway surfaces 12 and 22 of the hub wheel 10 and the inner ring 20, and is provided by pressing and pressing in a stem part 66 extending from the outside joint member 62 of a constant velocity universal joint 60 in and to a shaft hole of the hub wheel 10. A thrust rolling bearing 80 rollingly held by a resin material or a rubber material 84 in a state of radially arranging a large number of needle-like rollers 82, is interposed between the opposed surfaces 63 and 24 of a shoulder part 61 of the outside joint member 62 and an inboard side end part 26 of the inner ring 20. COPYRIGHT: (C)2009,JPO&INPIT