| 摘要 |
PROBLEM TO BE SOLVED: To obtain a lubricating grease composition suitable for decreasing the noise of a bearing and increasing the life of it by compounding a base oil with a thickener containing lithium hydroxystearate and a lithium salt of a 6-11C fatty acid. SOLUTION: This composition contains a base oil and 5-40 mass % (based on the composition) thickener which comprises 5-95 mol% lithium hydroxystearate and 95-5 mol% lithium salt of a 6-11C fatty acid. The base oil is a carbonic ester compound, a synthetic ester oil (e.g. a polyol ester), a synthetic ether oil (e.g. an alkyl diphenyl ether), a synthetic hydrocarbon oil (e.g. a poly-α-olefin), a mineral oil (e.g, a paraffinic mineral oil) or the like, preferably contains 10 mass % or higher ester oil, and preferably has a kinematic viscosity (40 deg.C) of 5-20 mm2/s. |
