| abstract |
The present invention provides a grease composition with little thermal degradation even when used in a high-temperature environment, and a rolling bearing and a motor with good acoustic properties even when used in a high-temperature environment. The grease composition contains a base oil, a thickener, and a dispersant in an amount of 0.5 wt% or more, wherein the dispersant contains a metal salt of a carboxylic acid, a metal salt of a polycarboxylic acid, and a copolymer of a metal salt of a carboxylic acid and a hydrocarbon compound. at least any of the parties. The metal salt of carboxylic acid, the metal salt of polyvalent carboxylic acid, and the metal salt of carboxylic acid forming the copolymer of the metal carboxylic acid salt and the hydrocarbon compound may be an alkali metal salt containing at least one of sodium salt, lithium salt, and potassium salt Or an alkaline earth metal salt containing at least one of magnesium salt and calcium salt. |