ROLLING BEARING

摘要

A rolling bearing capable of achieving high-speed, long life, and maintenance-free characteristics by only a grease sealed in the bearing. A rolling bearing has an inner ring (1), an outer ring (2), and rolling bodies (3) interposed between raceway surfaces (1a, 2a) of the inner and outer rings (1, 2). A grease pool forming part (6) and a gap forming piece (7) are provided in the rolling bearing. Inside the grease pool forming part (6) is formed a grease pool (8), and the grease pool forming part (6) is in contact with the outer ring (2). The gap forming piece (7) is a part communicated from the grease pool (8)to near the outer ring raceway surface (2a) to form a gap (14) along an outer ring inner diameter surface (2b). The volume of the gap (14) is such that it can supply a base oil of a grease in the grease pool (8) to near the outer ring raceway surface (2a) by a capillary phenomenon of a thickener