Patent ID: 7186029
Filing Date: 2007-03-06
Classification: C10M,F16C,H02K

Abstract:
1. A rolling bearing for supporting a shaft on which a fan is provided comprising; an inner ring having an inner ring race on an outer surface thereof; an outer ring having an outer race on an inner surface thereof; a plurality of balls provided between the inner ring race and the outer ring race; and a retainer which keeps the balls apart each other in a circumferential direction, wherein an inner diameter of the bearing is set to be 3 mm or more and 17 mm or less, an outer diameter of the bearing is set to be 8 mm or more and 40 mm or less, when a thickness ti is defined between a bottom surface of the inner ring race and the inner surface of the inner ring, and a thickness te is defined between a bottom surface of the outer ring race and the outer surface of the outer ring, a relationship te≧1.24 ti is satisfied, and a residual austenite content in the inner ring is 7 wt % or less.