| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lubricating oil composition for an iron-based bearing having high rust-preventive capacity as well as excellent lubricity and oxidation stability. <P>SOLUTION: The lubricating oil composition is obtained by blending a synthetic calcium sulfonate and a synthetic zinc sulfonate having a base number of 1-100 mg KOH/g, with mineral oil-based or synthetic oil-based lubricating base oil, at 3-30 mass% of the total amount of the sulfonates based on the total amount of the composition, with an elemental ratio [calcium/zinc] of 2:8 to 8:2. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
