Preventing stress corrosion cracking of bearings
US4687556A · kind A · utility
8Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1985 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Dec 19, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C35/063
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of inhibiting stress corrosion cracking of a bearing 10 of the type installed on a shaft with an interference fit. The surface of the inner ring 16 is shot peened at least at and near the junctures 28,30 of the endwalls 22,24 with cylindrical inner surface 26. The shot peening is performed with sufficient intensity to produce residual compressive stress which offsets at least a portion of the tensile stress resulting from the installation interference fit. The shot peened surface is then coated with a thin metallic material. Finally, the inner bearing ring 16 is baked to remove hydrogen resulting from the coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.