Lubricating grease composition, rolling bearings and motors encapsulated within it

Abstract

This invention provides a grease composition exhibiting excellent friction and wear resistance and achieving a long service life even under high-temperature and high-speed rotational environments. The grease composition contains a synthetic hydrocarbon oil, a urea-based thickener, and an extreme pressure additive. The extreme pressure additive is at least one selected from the group consisting of acidic phosphate alkenyl esters and trialkyl trithiophosphites. The grease composition does not contain metal stearate salts or acetylamine compounds.

Images