Rolling bearing
US5516214A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1994 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Dec 22, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S384/912
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The outer surface of a rolling element (3) of a rolling bearing is coated with a lubricating film (4) having three layers (5, 6, 7). The bottommost layer (5) coated on the surface of the rolling element (3) is made of Sn; the intermediate layer (6) coated on the surface of the bottommost layer (5) is made of Ag; and the topmost layer (7) coated on the surface of the intermediate layer (6) is made of Pb. As a result of this construction, Ag serves as a binder between the Pb-Sn alloy and steel constituting an inner race member (1), an outer race member (2) and/or the rolling element (3), which in turn renders the lubricating film (4) wettable with respect to the surfaces of the inner and outer race members (1, 2) defining a race and the outer surface of the rolling element (3). Hence, stable lubrication between the bearing components can be implemented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.