Tapered roller bearing with displaceable rib
US8356944B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2007 |
| Grant date | Jan 22, 2013 |
| Priority date | — |
| Expiry date | May 22, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/497
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bearing system (A) that supports a shaft (4) in a housing (2) includes two single row tapered roller bearings (6, 8) mounted in opposition. One of the bearings (8) compensates for thermal variations that would otherwise produce excessive preload in the system. It has a conventional cup (48) in the housing and tapered rollers (52) arranged in a single row along the raceway (54) of the cup. It also has a compensating assembly (50, 100, 110, 120, 130) on the shaft, and it includes a ribless cone (60) having a raceway (70) around which the rollers are organized, an axially displaceable rib ring (64) for positioning the rollers, a spring (66) for urging the rib ring against a stop surface (74) on the cone, and a compensating ring (68) formed from a material having a high coefficient of thermal expansion for displacing the rib ring against the force exerted by the spring when the temperature of the compensating assembly exceeds a prescribed set point temperature so as to reduce preload in the bearing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.