Wheel support bearing assembly
First Claim
1. A wheel support bearing assembly including an outer member having an inner periphery formed with a plurality of raceways and an outer periphery formed with a vehicle body mounting portion, an inner member having an outer periphery formed with raceways cooperable and aligned with the raceways in the outer member, rows of rolling elements interposed between the raceways in the outer member and the raceway in the inner member, respectively, in which the outer periphery of one of the outer and inner members is formed with a wheel fitting hub flange defined on an outboard side and the inner member includes a hub axle having an inner race mount defined on an inboard side and radially inwardly stepped to provide a reduced diameter, and an inner race member mounted on the inner race mount, with the raceways in the inner member defined in the hub axle and the inner race member, respectively, wherein an outer diameter of the hub axle as measured at a point intermediate between the rows of the rolling elements on the outboard and inboard sides, respectively, is chosen to be greater than a minimum available diameter of the raceway on the inboard side.
1 Assignment
0 Petitions
Accused Products
Abstract
To provide a wheel support bearing assembly, in which the rigidity of an outboard portion thereof can be increased without increasing the weight of the bearing assembly, the wheel support bearing assembly includes outer and inner members (1,2) and rows Lo and Li of rolling elements (7,8) interposed between outboard and inboard raceways (3 to 6) defined in the outer and inner members confronting each other. The inner member (2) includes a hub axle (18) having a wheel fitting flange (20) on an outboard side thereof, and an inner race member (19) mounted on an inboard end thereof. The hub axle has an outer diameter D1 measured at a point P intermediate between Lo and Li is greater than the minimum diameter D2 of the raceway (6) on the inboard side. A pitch circle diameter PCDo of the outboard row Lo is greater than PCDi of the inboard row Li.
30 Citations
12 Claims
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1. A wheel support bearing assembly including an outer member having an inner periphery formed with a plurality of raceways and an outer periphery formed with a vehicle body mounting portion, an inner member having an outer periphery formed with raceways cooperable and aligned with the raceways in the outer member, rows of rolling elements interposed between the raceways in the outer member and the raceway in the inner member, respectively, in which the outer periphery of one of the outer and inner members is formed with a wheel fitting hub flange defined on an outboard side and the inner member includes a hub axle having an inner race mount defined on an inboard side and radially inwardly stepped to provide a reduced diameter, and an inner race member mounted on the inner race mount, with the raceways in the inner member defined in the hub axle and the inner race member, respectively,
wherein an outer diameter of the hub axle as measured at a point intermediate between the rows of the rolling elements on the outboard and inboard sides, respectively, is chosen to be greater than a minimum available diameter of the raceway on the inboard side.
Specification