Patent ID: 7234872
Filing Date: 2007-06-26
Classification: F16C,G11B

Abstract:
1. A rolling bearing comprising: an inner ring having an inner ring raceway; an outer ring having an outer ring raceway; a plurality of rolling elements rotatably disposed between the inner ring raceway and the outer ring raceway, each of the rolling elements having a rolling surface; a retainer rotatably retaining the rolling elements; an oil film made of a lubricant comprising at least one additive selected from the group consisting of organic aliphatic acid, organic aliphatic acid derivative and organic phosphorus compound incorporated in a first synthetic oil in a proportion of from 0.5 to 10% by weight, wherein the oil film is formed on at least one of the inner ring raceway, the outer ring raceway and the rolling surface; and a grease comprising a second synthetic oil as a base oil enclosed therein.