The invention provides a grease composition comprising a base oil consisting of a fluorinated oil and an antirust agent, wherein said antirust agent comprises an aliphatic dibasic acid salt of the formula (1) in an amount of not less than 0.1% by mass and less than 1.0% by mass based on the total mass of the grease composition:
(CH2)n(COO)2Mm (1)
wherein n is an integer of 1 to 19, M is an alkali or alkaline earth metal, m is 2 when M is an alkali metal and m is 1 when M is an alkaline earth metal, and a bearing wherein the grease is packed. The grease exerts less effects on the environment. It is low in evaporation loss at a high temperature, shows good antirust property and can be suitably used in a ball bearing operated at a high temperature.
本发明提供了一种润滑脂组合物,该组合物包括由含
氟油和防锈剂组成的基础油,其中所述防锈剂包括式(1)的脂肪族二元酸盐,其用量以润滑脂组合物总质量为基准,不小于 0.1%(以质量计),也不小于 1.0%(以质量计):
(
CH2)n(COO)2Mm (1)
其中 n 为 1 至 19 的整数,M 为碱
金属或碱土
金属,当 M 为碱
金属时,m 为 2,当 M 为碱土
金属时,m 为 1。润滑脂对环境的影响较小。它在高温下的蒸发损耗小,防锈性能好,适合在高温下运行的球轴承中使用。