What are the lubrication methods of gears?

　　Lubrication plays a decisive role in the normal operation and service life of the gear transmission.Lubricant's various functions such as lubrication and cooling in the gear transmission ensure the normal operation of the gear at a certain working temperature and prolong the service life of the gear.The editor of Taishang Precision will tell you what are the common gear lubrication methods.

　　Boundary lubrication: It is separated by an oil film on the meshing tooth surface. The oil film formed between the meshing tooth surface is not strong enough and has poor fluidity and is not enough to maintain stable elastic fluid lubrication. It mainly depends on the chemical reaction formed by the lubricant additive on the metal surface Film and physical adsorption film to play a lubricating effect.The gears under the boundary lubrication state are extremely limited in their ability to withstand loads, speeds, temperatures, and time, and they are prone to wear and cause the gear to fail.

　　Elastic fluid lubrication: Because there is a certain strength of elastic fluid lubricant between the two gear surfaces, the meshing surfaces are completely separated, so that the movement friction of the two friction surfaces becomes the internal friction of the fluid, and the heat generated by the movement is taken away in time. Under the high speed, bear a certain load to reach the normal operation of the gear, which is the most ideal lubrication state.

　　Mixed lubrication: a state often appearing in type gear transmission.The elastic film of the remaining body between the meshing tooth surfaces of the gear teeth is mainly dynamic lubrication, and there are boundary lubrication and dry friction at the same time.

　　The above is the common gear lubrication method. Because the lubricant forms a certain intensity of lubricating elastic oil film between the gear meshing surfaces, the meshing tooth surfaces are separated, and the extreme pressure additives in the lubricant form a chemical reaction film with the metal surface. To cope with the boundary conditions that appear at any time, so the separation between the gears is maintained, and the purpose of eliminating wear is achieved.

　　Therefore, the lubricant to maintain normal gear operation must have good extreme pressure and anti-wear properties, excellent lubrication properties, suitable viscosity, good fluidity and heat dissipation, a certain degree of rust and corrosion resistance, and good anti-emulsification properties. And the lowest possible transmission sound.Gear lubrication is very helpful for reducing noise and extending gear life.