| 摘要 |
<p>A lubricating oil composition for stepless transmissions prepared by blending a lube base oil with (A) a sulfur base extreme-pressure agent, (B) a phosphorus base extreme-pressure agent, and (C) an alkaline earth metal base detergent. The component (A) is selected from among sulfurized fats and oils, thio-carbonates, thioterpenes and so on; the component (B) from among tricresyl phosphate, amine salts of alkyl and alkenyl phosphates and so on; and the components (C) from among calcium phenate and so on. This composition is excellent in wear resistance and extreme-pressure properties and can keep a high coefficient of friction for a long time, so that it is useful as a lubricating oil composition permitting the transmission of a great capacity of torque for stepless transmissions of, particularly, metallic belt type.</p> |
