| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing capable of reducing material costs, improving rigidity of a cage to a level same as or higher than that of a resin material product of high order, and dissolving lead/lag of rolling elements.SOLUTION: A cage 22 of a rolling bearing has an annular core metal 1 and a resin portion 2 covering the core metal 1. The resin portion 2 has an annular body, and a plurality of pillar bodies axially extending from the annular body, and forming pockets for holding rolling elements therebetween. The core metal 1 has an annular body internal buried-portion buried in the annular body of the resin portion 2, and a plurality of pillar body internal buried-portions extending from the annular body internal buried-portion and respectively buried in each of the pillar bodies. The difference in diameters of the rolling elements is 2 μm or less. |
