Function of lubricating oil

1. Control friction
Because the lubricating oil intervenes between the two friction surfaces, the dry friction becomes the friction between the lubricating oil molecules. Thus, the friction coefficient is controlled.
2. Reduce friction
As lubrication reduces friction to a minimum, tearing and wear of the metal surface are avoided.
3. Reduce cooling
In addition to the effect of reducing friction, the lubricating oil also absorbs heat from the surface of the friction body, and decomposes the heat evenly into the lubricating molecules to play a cooling role. Generally speaking, solid lubrication materials have the worst heat dissipation, while liquid lubrication materials have the best heat dissipation.
4. Kinetic energy of antirust
Because the surface of the friction body is covered by lubricating oil, the metal can not contact with surrounding media, such as air, moisture, oxide, etc., resulting in corrosion and damage.
5. Sealing function
The engine makes the cylinder piston in a highly sealed state, so that it does not leak in operation and plays a sealing role. In addition, grease is a self sealing lubricant.
6. Transmission power
A lot of lubricating oil has the function of transmitting power, such as hydraulic transmission. Its power is not transmitted from one component to another, but through hydraulic oil. When the gear is engaged, its power is not transmitted between the teeth, but through a layer of lubricating oil.
7. Shock absorption
Automobile shock absorbers use shock absorbers to absorb shock. Shock absorption is a common characteristic of all lubricants. When the friction surface is impacted, the lubricant attached to the surface has the instinct of absorbing shock.

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