In the environment of strong chemical medium, synthetic oil grease that is resistant to chemical medium such as fluorocarbon grease should be selected.
(1) The selected grease should be compatible with the grease supply method of the friction pair
For centralized grease supply, No. 00~1 grease should be selected; for parts that are regularly filled with grease such as grease guns and grease cups, No. 1~3 grease should be selected; for long-term use without grease replacement, it should be Use No. 2 or No. 3 grease.
(2) The selected grease should be adapted to the working state of the friction pair
For example, when the vibration is large, use grease with high viscosity, good adhesion and vibration damping, such as complex soap-based grease thickened with high-viscosity naphthenic or mixed-base lubricating oil.
(3) The selected grease should be suitable for its purpose of use
The grease used for lubrication must be selected according to the type of friction pair, working conditions, working conditions, environmental conditions and grease supply methods; for the grease used for protection, it should be able to effectively protect the metal from corrosion, such as protection For parts in contact with seawater, aluminum-based grease with strong adhesion and water resistance should be selected; general protective grease can be made of solid hydrocarbon-thickened high-viscosity base oil. For sealing grease, attention should be paid to its resistance to the solvent of the medium being sealed.
(4) The selected lubricating grease should minimize the variety of grease and improve economic benefits.
In the case of meeting the requirements, try to use multi-purpose general-purpose greases such as lithium-based grease, complex soap-based grease, and polyurea grease. In this way, the variety of grease is reduced, the management of grease is simplified, and the cost of grease consumption and maintenance costs can be reduced due to the long service life of the multi-effect grease.
