| 摘要 |
PROBLEM TO BE SOLVED: To obtain a grease composition, improved in lubricating performances and lubrication life at high temperatures and suitable as a bearing, etc., used for high-temperature and high-speed rotation by including a base oil and a urea compound having an ether bond in the molecule therein. SOLUTION: This grease composition comprises (A) a base oil such as a mineral oil or a synthetic hydrocarbon and (B) preferably 7-35wt.% thickener composed of a urea compound such as a compound represented by the formula (R is a 6-15C hydrocarbon; at least either one of A1 and A2 is a group having an ether bond). |
