| abstract |
PROBLEM TO BE SOLVED: To produce an abnormal noise even at an extremely low temperature of -40 ° C., to have excellent seizure resistance even at a high temperature close to 180 ° C., and to have excellent rust prevention performance, particularly for an electrical component, an engine auxiliary machine, etc. Suitable grease compositions as well as rolling bearings are provided. A base oil containing 30% by mass or more of an aromatic ester oil based on the total amount of the base oil, and a diurea compound represented by the following general formula as a thickener is contained in an amount of 5 to 35% by mass based on the total amount of the grease composition. A grease composition for automotive electrical equipment. A rolling bearing in which the grease composition is enclosed. R8-NHCONH-R9-NHCONH-R10 (In the formula, R9 is an aromatic hydrocarbon group having 6 to 15 carbon atoms, and R8 and R10 are an aliphatic hydrocarbon group, an alicyclic hydrocarbon group or a condensed ring, which may be the same as or different from each other. .) [Selection figure] None |