| abstract |
[57] [Problem] To be used under high temperature, high speed, and high load, and even if invaded by water from outside, it does not cause peeling with white structure change due to generated hydrogen and has a long life. Provide rolling bearings. A cage (22) is provided between an inner ring (20) and an outer ring (21). And a plurality of rolling elements 23 are rotatably held at substantially equal intervals via a via hole, and a grease composition containing an azo compound at a rate of 0.01 to 10% by weight is sealed. Rolling bearing 8. |