BEARING OIL COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a bearing oil composition having excellent oxidation stability and low evaporation loss. SOLUTION: The bearing oil composition is obtained by compounding a base oil consisting of a dibasic acid diester composed of a glutaric acid derivative having a≥7C alkyl group as the ester group with at least one kind of antioxidation agent selected from amine-based antioxidation agents and phosphorus-based antioxidation agents in an amount of 0.05-2.0 mass% and has kinetic viscosity of 6-100 mm2/s at 40°C as the composition. COPYRIGHT: (C)2008,JPO&INPIT