Rolling bearing lubricant

摘要

A lubricant composition (G), comprising a polyether as a base oil, is filled in a bearing composed of an outer race (1), an inner race (2) and rolling elements (3). The polyether lubricant has a kinematic viscosity of 90-160 cSt at 40 DEG C. The outer race (1) and/or inner race (2) of the bearing can be made of steel having an oxygen content not higher than 6 ppm with a hardened raceway surface.