Grease consists of a base oil, a thickener, and additives. It has the following characteristics:

1) The permissible speed is 65% to 80% of that of oil lubrication, simplifying the shaft sleeve structure and sealing device;

2) Less pollution caused by leakage;

3) Poor fluidity and relatively poor cooling effect;

4) Difficulty filtering impurities and slightly complicated lubricant replacement.

5) When selecting a grease, choose one that is well suited to the operating conditions of the bearing.