Grease composition for rolling bearing and rolling bearing...

Details Grease composition for rolling bearing and rolling bearing... Grease composition for rolling bearing and rolling bearing...

2004-07-02

2009-02-17

Griffin, Walter D (Department: 1797)

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Ptfe

Reexamination Certificate

active

07491683

ABSTRACT:
Bismuth dithiocarbamate (BiDTC) is added to a urea grease containing a lubricating base oil having a poly-α-olefin synthetic oil or a diphenyl ether synthetic oil and a diurea thickening agent, or a fluorine grease containing a lubricating base oil having fluorinated synthetic oil and a polytetrafluoroethylene thickening agent. By taking such constitution as described above, a surface film is formed on a surface of a raceway of any one of inner and outer rings or a surface of a rolling element of a bearing. Therefore, the rolling bearing in which a grease composition having the constitution is packed can maintain an excellent lubricity for a long period of time even under severe conditions such as a high rotation, a high temperature and a heavy load. Further, the grease composition for the rolling bearing is low in harmfulness to a human body and gives little load to the environment.

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