Rolling bearing
US6391128B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Mar 30, 2021 |
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 &bgr; type titanium alloy. The percent cold working of the &bgr; 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 &bgr; phase in the &bgr; type titanium alloy is predetermined to a range of from 30 to 80%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.