Hybrid ball bearing, particularly for refrigerant compressor
US10527094B2 · kind B2 · utility
0Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2018 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Sep 5, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2362/52
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A Hybrid ball bearing including an outer raceway, an inner raceway, and a plurality of balls arranged between the inner raceway and the outer raceway. The outer raceway and the inner raceway are made from bearing steel and have a first surface RMS roughness Rq1. At least one ball of the plurality of balls is made from a ceramic material and has a second surface RMS roughness Rq2. In a mint condition, the roughness of the raceways Rq1 is 2 to 5 times higher than the roughness Rq2 of the at least one ball, as well as a refrigerant compressor comprising such a hybrid ball bearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.