| 摘要 |
PROBLEM TO BE SOLVED: To provide a tapered roller bearing fixing structure for greatly reducing the torque of a tapered roller bearing while surely preventing the seizure of the tapered roller bearing, and to provide a vehicular pinion shaft supporting device. SOLUTION: Established are ϕB≤ϕA+5, C≤10, Δ≥10, and 20°≤α≤30° where ϕA (mm) is the outer diameter of a large collar portion of an inner ring 28, ϕB (mm) is the outer diameter of an outer peripheral face 36 at the end on the inner ring side of a pinion gear 2, C (mm) is an axial distance from an end face 44 on the pinion gear side on the outer peripheral face of an outer ring 24 to an end face 40 on the pinion gear side of an annular portion 27, Δ (mm) is an axial distance from the end face 40 of the annular portion 27 to an end face 39 on the inner ring side of the pinion gear 2, and α is the raceway angle of the outer ring. COPYRIGHT: (C)2007,JPO&INPIT
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