Grease for bearings, bearing flexible operation to meet the grease soap fiber structure (ie thickener) should have a smooth shape, no obvious particles to ensure bearings can smooth, flexible operation, and does not produce noise, precision bearings for more should have the following characteristics:

1) the structure of smooth, uniform, particulate-free

2) colloidal stability good, moderate fuel points.

3) mechanical stability is good, can guarantee long-term work, structural fat is not prematurely destroyed

4) low mechanical impurities. Mechanical impurities is the main cause of noise and wear, because they can not make the bearing well balanced operation generates vibration.