| 摘要 |
PROBLEM TO BE SOLVED: To obtain a lubricating composition gentle to environment and to provide a rolling bearing using the lubricating composition. SOLUTION: This lubricating composition comprises 95-5 wt.% of a biodegradable resin composed of polybutylene succinate, polylactic acid, polyhydroxybutyric acid, etc., and 5-95 wt.% of a lubricating oil composed of a diester oil, an aromatic ester oil, a polyol ester oil, etc., and having >=60% biodegradation rate of a lubricating grease having a higher dropping point than the melting point of the biodegradable resin and >=60% biodegradation rate. |
