煤炭工业从井下到露天开采的机械设备都有减速器,其传动齿轮由于产生磨损、点蚀、擦伤、塑变等失效现象而加速报废或缩短寿命。过去,人们主要从齿轮的设计、制造、材料和热处理等方面考虑解决这些问题,忽视了润滑这个重要因素。因此,从润滑角度分析齿轮失效的原因和如何选用润滑油是十分必要的。 Coal industry from underground to open-pit mining machinery and equipment have reducer, the transmission gear due to wear and tear, pitting, abrasion, plastic deformation and other failure phenomena to accelerate scrapped or shortened life expectancy. In the past, people mainly considered the design, manufacture, material and heat treatment of gears to solve these problems, ignoring the important factor of lubrication. Therefore, it is necessary to analyze the reason of gear failure and how to choose the lubricating oil from the lubrication point of view.