Thrust needle bearing
US7942586B2 · kind B2 · utility
3Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2004 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Nov 12, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2240/54
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a thrust needle bearing employing lubricating oil and having rollers held by a cage and rolling on races, the value of the arithmetic average roughness Ra of roller is 0.03 to 0.15 μm. Even when the bearing is used under the conditions where lubrication is lean or lubrication characteristics are wrong, the rolls can be prevented from being worn at the contact parts thereof with the pocket guide face of the cage and the life of the rollers and races can be increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.