| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing part structure capable of avoiding the occurrence of braking failure, and capable of improving reliability, by surely preventing lubricating oil from sticking to a brake drum inner peripheral surface, even if the lubricating oil flows out to an external part from a bearing by the deterioration of a seal member.SOLUTION: A bearing part structure includes: a deflector 19 arranged so as to prevent differential oil 14 as lubricating oil of passing through the inside of a unit bearing 3 as a bearing from sticking to the inner peripheral surface side of a brake drum 16 by leaking out of a clearance between a shaft part 4 of a wheel shaft 1 and a shaft part 13b of a drive shaft 13; and a guide groove means 21 recessed on a surface on the inside in the vehicle width direction of a hub 2 so as to guide the differential oil 14 leaked out to an inside space 20 defined on the inner surface side of the deflector 19 to the external part of the brake drum 16. |
