Patent ID: 7931409
Filing Date: 2011-04-26
Classification: B60B,F16C,Y02T

Abstract:
1. A wheel bearing apparatus for a driven wheel of a vehicle comprising: an outer member integrally formed with a body mounting flange on its outer circumference, said body mounting flange is adapted to be mounted on a knuckle that forms part of a suspension apparatus, and an inner circumference of said outer member includes double row outer raceway surfaces; an inner member including a wheel hub and at least one inner ring, said wheel hub integrally formed at one end with a wheel mounting flange and on another end with a cylindrical portion, said at least one inner ring is press-fit onto the cylindrical portion of the wheel hub, said inner member formed with double row inner raceway surfaces on its outer circumference, said double row inner raceway surfaces arranged opposite to the double row outer raceway surfaces; double row rolling elements are rollably contained, via cages, between the inner raceway surfaces of the inner member and the outer raceway surfaces of the outer member; and the knuckle has a disc shaped bottom portion, said outer member is secured to the knuckle by fastening bolts with the body mounting flange being abutted against the bottom portion of the knuckle, the inner side end of the inner member is closed by the knuckle, a plurality of pins is secured to the knuckle, and pin bores for receiving the pins are formed on the body mounting flange, said pins radially positioning the outer member relative to the knuckle.