Patent ID: 7402550
Filing Date: 2008-07-22
Classification: C10M,C10N,F16C

Abstract:
1. A rolling bearing holding two or more rolling elements between inner and outer rings in such a way that these rolling elements can freely roll, and packed with a grease, wherein said grease is a grease composition comprising a mixture of metal complex soap-based grease containing a base oil, the base oil of the metal complex soap-based grease independently comprises a mineral oil or a synthetic oil selected from the group consisting of hydrocarbon-, aromatic-, ester-, and ether-based oils, each used either individually or as a mixed oil, the metal complex soap-based grease incorporated with 20 to 35% by mass, based on the amount of the metal complex soap-based grease, of metal complex soap as a thickening agent, and fluorine-based grease comprising perfluoropolyether oil as a base oil incorporated with 20 to 42.5% by mass, based on the amount of fluorine-based grease, of polytetrafluoroethylene as a thickening agent, ratio of said metal complex soap-based grease versus said fluorine-based grease being 40 to 50:60 to 50 by mass, and total content of the thickening agents being 24 to 30% by mass based on the amount of the grease composition, wherein the rolling bearing is a rolling bearing for automobiles.