| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing for a hard disk drive of a little out gas generation and a low torque fluctuation at low torque and capable of stably maintaining good lubricating performance for a long time. SOLUTION: This bearing is a rolling bearing provided with an inner ring, an outer ring, plural rolling members, and a retainer made of synthetic resin and having pockets for retaining rolling members formed by plural projections provided along a circumference direction of an annular base parts and cut out bridge parts connecting between the projections. Film of lubricating oil is formed on each raceway surface of the inner ring and the outer ring and surfaces of the rolling elements, and grease is retained on the cut out bridge parts of the retainer. |
