Patent ID: 8591118
Filing Date: 2013-11-26
Classification: B60B,F16C,F16D

Abstract:
1. A driving-wheel bearing device, comprising: an outer member having a shoulder portion, and double-row outer raceway surfaces on an inner periphery thereof; an inner member comprising a hub wheel and an inner race, the inner member having an end portion, a wheel attachment flange at one end thereof and double-row inner raceway surfaces on an outer periphery thereof; and double-row rolling elements interposed between the double-row outer raceway surfaces of the outer member and the double-row inner raceway surfaces of the inner member, wherein the hub wheel has a shaft hole into which a stem section extending from an outer joint member of a constant velocity universal joint is capable of being spline-fitted, wherein a plate having a coating layer disposed thereon, having predetermined sliding properties and having a plate thickness from 0.5 mm to 2 mm is interposed between opposite surfaces of the shoulder portion of the outer joint member and the end portion of the inner member, wherein the plate has a yield strength of 205 N/mm wherein the plate is configured and arranged to have a surface-pressure applied thereto by an axial force.