Patent ID: 8857062
Filing Date: 2014-10-14
Classification: F16C,Y10T

Abstract:
1. A method of manufacturing a sealed rolling bearing comprising an inner ring, an outer ring, rolling elements disposed between the inner ring and the outer ring, and seal members each having a seal lip and being secured to one of the inner and outer rings, the seal lips of the seal members being in sliding contact with metal surfaces which are portions of a surface of the other of the inner and outer rings, or surfaces of members mounted on the other of the inner and outer rings, said method comprising subjecting sliding contact portions of the metal surfaces that are in sliding contact with respective seal lips to minute shot peening in which minute shots having a hardness equal to or greater than the hardness of the metal surfaces and having a particle diameter of 20 to 200 micrometers are struck against the sliding contact portions of the metal surfaces at a speed of 50 meters per second or greater; and superfinishing only a raceway of the other of the inner and outer rings by grinding after said minute shot peening of the metal surfaces, wherein the minute shots are molybdenum disulfide so as to increase surface pressure between the sliding contact portions of the metal surfaces and the seal lips.