Lubricant for percussion equipment

摘要

This invention discloses a lubricant suitable for use in percussion equipment. The lubricant comprises a base oil selected from the group consisting of Group I or Group II, blended in a synergistic amount with a gear oil package and a friction modifier. The lubricant exhibits superior wear and superior extreme pressure properties due to the synergistic effect of the gear oil package and the friction modifier. In a preferred embodiment, the gear oil package comprises a polyalkyl methacrylate polymer, and the friction modifier comprises a synthetic ester.

主权项

1. A lubricant comprising a base oil selected from the group consisting of Group I or Group II, blended with a gear oil package comprising sulfur-phosphorus hydrocarbons comprising from 15-25 wt % sulfur and from 0.75-1.25 wt % phosphorus and with a synthetic ester friction modifier, wherein the gear oil package is present in an amount of 1.3 to 1.9% by weight of the lubricant and the friction modifier is present in an amount of 0.1 to 0.2% by weight of the lubricant, and the lubricant is a percussion equipment lubricant.