| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing device for a driving wheel which efficiently suppresses a creep without greatly increasing production cost. SOLUTION: The bearing device for the driving wheel 10 is provided with: a hub shaft 11 which has a flange part 13 for fixing a wheel at one end on the outer peripheral side and also has a center hole 12 to which a shaft part 31 of a constant velocity joint 30 integrally rotatably coupled with a drive shaft S is inserted from the other end and is integrally rotated with the constant velocity joint 30; a second inner ring 15 which is externally fitted with the other end on the outer peripheral side of the hub shaft 11; an outer ring 17 which is arranged on the outward side of an outer periphery of the second inner ring 15 and is mounted on the vehicle side; and a plurality of balls 16 which are freely turnably arranged between the inner and outer rings. An inner peripheral tapered surface 12b which is outwardly expanded from one end to the other end in a shaft direction is formed at the other end of the center hole 12, and an outer peripheral tapered surface 31b which is press-fitted to the inner peripheral tapered surface 12b is formed in the shaft part 31. COPYRIGHT: (C)2007,JPO&INPIT
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