Rotation ring
US7967511B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 2008 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Sep 16, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Provided is a slewing ring which has a structure with a large slewing diameter, and is readily produced at low cost. The slewing ring includes: an outer ring (1), in which a load rolling groove (10) and a no-load rolling groove (11) for a large number of balls (4) are arranged along a circumferential direction of an inner peripheral surface of the outer ring (1) in parallel to each other; an inner ring (2), which is provided inside the outer ring (1), and in which a load rolling groove (20) and a no-load rolling groove (21) for the large number of balls (4) are arranged along a circumferential direction of an outer peripheral surface of the inner ring (2) in parallel to each other; and a plurality of ball-retaining blocks (3), which are provided in a gap between the outer ring and the inner ring, are assembled between the outer ring and the inner ring through the large number of balls, and causes the large number of balls (4) to circulate in an endless manner between the load rolling groove (10) of the outer ring (1) and the no-load rolling groove (21) of the inner ring (2) and between the no-load rolling groove (11) of the outer ring (1) and the load rolling groove (20) of the inn…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.