| 摘要 |
A lubricating oil composition comprising, blended into a base oil, (A) an ester phosphate, (B) an ester thiophosphate, and (C) a naphthylamine derivative. This lubricating oil composition has excellent abrasion resistance and does not readily produce sludge even at high temperatures, and is therefore suitable for an oil retaining bearing of a high-speed spindle motor used for a DVD-RAM, a blue-ray disc, or the like. |
