1.润滑脂俗称黄油,与润滑油相比主要缺点是流动性不好,不能象润滑油那样循环流动,带走机械运转中产生的热量,起某些冷却作用;静摩擦系数高,在机械启动阶段阻力较大。但润滑脂的动摩擦性能好,在机械正常运转时,润滑脂的润滑性能与润滑油差别很小。润滑脂也有不少优于润滑油的方面,密封简单、不易脏污, 1. Grease commonly known as butter, compared with the main drawback is that poor liquidity, can not circulate like a lubricating oil, take away the heat generated by mechanical operation, play some of the cooling effect; static friction coefficient is high, the mechanical start Stage of greater resistance. However, the dynamic friction performance of grease, the normal operation of machinery, grease lubrication and lubricating oil performance is very small. There are a lot of grease better than the oil, the seal is simple, not easy to dirty,