Seal containing age resistors for rolling bearing
US5695198A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 1996 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | May 13, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2208/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a seal for a rolling bearing, the seal has a molding member formed from a rubber material, the molding member including a lip portion, the molding member having 0.3 to 5.0 MPa of tensile stress at 10% strain and no less than 50% of elongation at break after the rubber material is subjected to an accelerated air aging at 130.degree. C. for 1000 hours. The rubber material includes the nitrile rubber compound containing a raw-material rubber, with respect to 100 weight parts of the raw-material rubber, 0.3 to 5.0 weight parts of an age resistor, and 0.3 to 5.0 weight parts of at least one secondary age resistor. The seal prevents grease enclosed in the rolling bearing from leaking out, the lip portion from being broken, and dust resistance from being lowered even in the case where the rolling bearing is used in a high-temperature environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.