Wheel bearing device
US5797686A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1997 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Jul 31, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2326/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A wheel bearing device is provided in which the cutting amounts of end faces in a simultaneous process substantially balance with each other, so that a polishing process is facilitated and the tightening axial force of a nut can be stabilized. A wheel bearing device has an outer race which serves also as a housing; an inner race which serves also as a shaft; an inner race member which is fittingly fixed to the shaft which is the inner race; rolling elements and a cage which are disposed in an annular space between the outer race, and the inner race and the inner race member; and a nut which fixes the inner race member to the inner race by an axial force. In the wheel bearing device, the inner race member is formed so that the area of an end face abutting against a step portion of the shaft of the inner race is substantially equal to the area of an end face abutting against a bearing surface of the nut. The step portion is formed so that an outer peripheral end of the end face abutting against the bearing surface of the nut is positioned inside an end of the bearing surface of the nut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.