Rolling bearing
US6250812A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1998 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Jul 1, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49689
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention provides a rolling bearing having an excellent corrosion resistance and toughness which can fairly operate at a high rotary speed. At least the inner race is formed by a titanium alloy, and the rolling elements are formed by ceramics. Alternatively, at least one of the inner race and the outer race is formed by a .beta. type titanium alloy. The percent cold working of the .beta. type titanium alloy is predetermined to not less than 20% or a range of from 5 to 20%. The cold working is followed by shot peening. Further, the surface hardness Hv is predetermined to not less than 600. The volumetric ratio of residual .beta. phase in the .beta. type titanium alloy is predetermined to a range of from 30 to 80%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.