Cylindrical roller bearing
US7416346B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2004 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Dec 12, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2240/50
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A cylindrical roller bearing includes an inner ring having a flange portion provided with a roller guide-surface which guides the end faces 4a of the cylindrical rollers having diameter of Da. The end face 4a away from a center axis of the cylindrical roller by 0.40 Da in the radial direction is a first position A, and the end face 4a away from the center axis by 0.35 Da is a second position B, the end face 4a contacts with the roller guide-surface between the first and second positions A and B, the end face 4a has a convex-shaped crowning portion 4b having a continuous curve which passes the first and second positions A and B, and an angle α formed between a line connecting the first and second positions A and B and a line perpendicular to the center axis is set to be 0.5° or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.