| abstract |
An inner and outer diameter dimension and a width dimension are equivalent to a standard bearing of ISO standard, and are hardly affected by hole accuracy of a housing and the like, and are less likely to generate abnormal noise and vibration even in a use environment exceeding 100 ° C. Provide bearings. A rolling bearing includes an inner ring having an inner raceway on an outer diameter surface, an outer ring having an outer raceway on an inner diameter surface, a plurality of balls arranged between the inner and outer raceways, and a ball. A retainer 17 for holding at intervals in the circumferential direction, the bearing inner diameter is set to 3 mm or more and 17 mm or less, the bearing outer diameter is set to 8 mm or more and 40 mm or less, and a shaft provided with a fan is supported. Used. When the thickness from the groove bottom of the inner ring raceway 12 to the inner diameter surface of the inner ring is ti, and the thickness from the groove bottom of the outer ring raceway 14 to the outer diameter surface of the outer ring is te, te ≧ 1.24 ti, and The amount of retained austenite contained in the inner ring is 7% by weight or less. [Selection diagram] Fig. 1 |