| 摘要 |
PROBLEM TO BE SOLVED: To provide a wheel bearing device which is miniaturized and capable of reducing the weight thereof and ensuring good assemblability. SOLUTION: The wheel bearing device comprises an outer ring 10 having a double-row raceway surface 11 on an inner circumference, a hub ring 20 having a wheel mounting flange 23 and a first raceway surface 22 on an outer circumference, an inner ring 30 having a second raceway surface 31 on an outer circumference, double-row rolling elements 40 interposed between the double-row raceway surface 11 and the first and second raceway surfaces 22, 31, and an outer joint member 51 of a constant velocity joint 50 to couple a stem part 55 with the hub ring 20 via a serration 61. In this wheel bearing device, the inner ring 30 is butted to an inboard side end of the hub ring 20 and press-fitted and fixed to an outer circumferential surface of the outer joint member 51. COPYRIGHT: (C)2007,JPO&INPIT
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