| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle bearing for reducing a loss while securing necessary and sufficient rigidity. SOLUTION: A pressure receiving area to an outer peripheral raceway 34 is larger in a tapered roller 36 whose relative distance from an engagement point P of a ring gear 20 and a drive pinion 26 is relatively remote than in a tapered roller 36 whose relative distance is relatively close. A rigidity is secured at a section subjected to an engagement reaction force in forward traveling of a vehicle, etc, by enlarging the pressure receiving area, while the loss can be reduced at the other section by decreasing the pressure receiving area. Accordingly, the first bearing 22 for reducing the loss while securing necessary and sufficient rigidity can be provided. COPYRIGHT: (C)2011,JPO&INPIT
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