Conductive grease and rolling apparatus packed with the same
US6689721B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2003 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Feb 27, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/842
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention is to provide a conductive grease which is less to decrease conductivity as a time passes. The conductive grease comprises a base oil, a thickener, a conductive solid powder, and at least one kind of a wear inhibitor, an extreme pressure agent and an oiliness agent, wherein an amount of the conductive solid powder added is 0.1 to 10 wt %, and an amount of the at least one kind of a wear inhibitor, an extreme pressure agent and an oiliness agent added is 0.1 to 10 wt %. Further, the conductive grease comprises the base oil and at least one of conductive additives, and the conductive additives are fibrous carbon, metallic particle, metallic compound particle and carbon nano-tube. The conductive grease to be packed into the rolling bearing comprises conductive fine particles such as carbon black and has an oil separation degree of 2% or lower. A ball bearing to be favorably used at high temperature comprises an inner race and an outer race, and a plurality of balls freely rotating between both races, and the conductive grease packed into a space defined between both races and holding the plural balls therein, and the conductive grease comprises the base oil, a thickener…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.