LUBRICATING OIL COMPOSITION, KINETIC LIQUID BEARING AND MOTOR LOADING LIQUID BEARING USING THE SAME COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a lubricating oil for kinetic liquid bearing having low viscosity and excellent in performances such as an energy saving property and wear resistance and a kinetic liquid bearing and a motor each using the lubricating oil. SOLUTION: The lubricating oil comprises a lubricating oil base oil composed of an ester-based base oil represented by chemical formula (1) (wherein R1and R2are each an alkyl group) and at least one kind of fatty acid represented by chemical formula 2: R3-COOH (wherein R3is an alkyl group) and preferably further comprises a mixed antioxidant composed of a hindered phenolic antioxidant having at least one (3,5-di-tert-butyl-4-hydroxyphenyl) and a hindered amine-based antioxidant. COPYRIGHT: (C)2006,JPO&NCIPI