Method for manufacturing a bearing raceway member
US7685717B2 · kind B2 · utility
6Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2003 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Feb 3, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49707
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
At least a race (1c) of a blank (B) for forming a bearing raceway member is hardened by heating and is finished to predetermined precisions. Subsequently, the race (1c) is roller burnished for additional hardening. The blank (B) is formed from a steel for bearing manufacture and is subjected to the roller burnishing, thereby achieving a hardness of HRC65 or more at a surface of the race (1c), and a center-line average roughness Ra of 0.1 μm or less at the surface of the race (1c) and achieving a hardness of HRC60 or more at the depth of at least 0.2 mm from the surface of (1c).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.