| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricant composition having excellent dispersion stability and re-dispersibility which almost does not become sludge even in the case where the composition is applied under severe actual machine environment of extremely high temperature such as a chain part of various mechanical apparatuses, and whose automatic oil supply is possible in the case of continuous operation for a long period of time.SOLUTION: A lubricant composition has polyol ester as base oil, and contains polybutene, metal-based dispersant, graphite, and hard cake inhibitor. Number average molecular weight of polybutene is 900 or more and 1350 or less, content of the polybutene is 1 mass % or more and 30 mass % or less with respect to the entire mass of the lubricant composition, content of the metal-based dispersant is 1 pts.mass or more and 5 pts.mass or less with respect to 100 pts.mass of the graphite, and content of the hard cake inhibitor is 0.1 mass % or more and 0.5 mass % or less with respect to the entire mass of the lubricant composition. |
