LUBRICATING OIL COMPOSITION FOR BEARINGS

摘要

Provided is a lubricating oil composition for bearings which has a lower viscosity in low-temperature environments compared to that of existing lubricating oils, and qualities equivalent to those of existing lubricating oils in high-temperature environments in terms of minimizing leakage, burning, and evaporation loss. This invention is a lubricating oil composition for bearings (K) that contains a diester (A) and a poly(meth)acrylate viscosity-enhancing agent (B), the diester (A) having a molecular weight of 250 to 600 and comprising at least one type of diester selected from a group consisting of diesters (A1) represented by formula (1), diesters (A2) represented by formula (2), and diesters (A3) represented by formula (3). Specifically, the combined mass of (A) and (B) constitute at least 81% of the mass of the lubricating oil composition for bearings.