Tapered roller bearing an automotive pinion shaft supporting apparatus utilizing same tapered roller bearing
US7484894B2 · kind B2 · utility
3Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2006 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Jul 27, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2361/61
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A tapered roller bearing according to the invention is such that the surface hardnesses of a raceway surface of an inner ring and rolling contact surfaces of tapered rollers are set to 63 to 69HRC. In addition, respective raceway surfaces of an outer ring and the inner ring and the rolling contact surfaces of the tapered rollers are crowned and are set such that a total crowning amount is 50 μm or larger, an outer crowning rate is 40% or larger and a roller crowning rate is 20% or smalled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.