| abstract |
The present invention provides a lubricant composition which has sufficient fretting resistance and can sufficiently suppress leakage from a bearing even when used in a high temperature environment. The lubricant composition of the present invention is characterized by containing perfluoropolyether as base oil, fluororesin as thickener, and polyol ester, urea-based grease, and zinc dialkyldithiophosphate as additives , wherein the mass ratio of the content of the perfluoropolyether to the total content of the polyol ester and the urea-based grease is 78/22 to 95/5, and the content of the perfluoropolyether and the The mass ratio of the content of the polyol ester is 90/10～96.5/3.5, the mass ratio of the content of the polyol ester to the content of the urea-based grease is 40/60～65/35, and the fluorine resin is relatively The content of the entire lubricant composition is 15 to 24% by mass, and the content of the zinc dialkyldithiophosphate is 0.5 to 4% by mass relative to the entire lubricant composition. |