ROLLING BEARING FOR USE IN EXTREMELY LOW-TEMPERATURE ENVIRONMENT

摘要

A rolling bearing (A) for use in an extremely low-temperature environment, wherein: a cage (4) for rotatably holding a rolling body (3) is provided between an inner race (1) and an outer race (2) which constitute part of the rolling bearing (A) and comprise a martensitic stainless steel or high-speed tool steel; the cage (4) comprises a resin material having solid lubricant properties; and the substrate surface of the inner race (1) and the outer race (2) is provided with a hard anodic oxidation coating (5) having a diamond-like carbon with a Vickers hardness (Hv) of 1,000-1,500 as a principal component thereof, with an intermediate layer interposed therebetween that incrementally or continuously increases hardness from the substrate toward the surface.