| 摘要 |
PROBLEM TO BE SOLVED: To provide means allowing for improvement in wear resistance and/or reduction in difference between stationary and dynamic friction coefficients at a fitting part of a hobbed spline part.SOLUTION: There is provided a grease composition containing: a base oil; a thickener; and an additive including an ester of a long chain fatty acid having 20-32 carbon atoms and a glycerin. |
