Rolling bearing cage, rolling bearing, and method of manufacturing rolling bearing cage
US9657779B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2014 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | May 2, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2326/47
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A cage includes: an annular body having pocket holes for receiving balls; and a resin portion formed through injection molding of a resin containing a solid lubricant with the body being set as an insert component. The resin portion includes: first parts formed along inner peripheral surfaces of the pocket holes of the body to form pocket surfaces to be held in sliding contact respectively with the balls; and a second part formed along an outer peripheral surface (or inner peripheral surface) of the body to form a guide surface to be held in sliding contact with an outer ring (or inner ring). The first parts and the second part are formed integrally with each other. Weld lines of the resin portion are formed at positions of avoiding exposure of the weld lines at both end portions of the pocket surfaces in a cage circumferential direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.