The advantages of grease lubrication are simple sealing structure and lubricating facilities, easy maintenance,, no leakage of grease, certain ability of preventing water, gas, dust and other harmful impurities from invading bearings. So grease lubrication is widely used.

Oil lubrication can be used in heavy load, high speed, high temperature and other occasions.

Solid lubrication can also be used in some special environments, such as high temperature and vacuum conditions.