Bearing device and method of manufacturing the bearing device
US6814495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2003 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Jun 12, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49696
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bearing device comprising a shaft body having an axially cylindrical portion in a free end side thereof and a rolling bearing fitted around an outer peripheral surface of the shaft body, wherein the cylindrical portion is bent and deformed radially outward by a rolling caulking to be caulked thereby on an outer end face of an inner ring of the rolling bearing. An inner peripheral surface of the cylindrical portion is formed by a turning work, and a residual stress left in a surface layer of the inner peripheral surface of the cylindrical portion by the turning work is set to a value capable of restraining a crack generation ratio in the inner peripheral surface to less than a predetermined rate, desirably to not more than 5 kgf/mm2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.