The commonly used vehicle "butter" is also divided into several types

Speaking of butter, many owners will not feel strange, as a vehicle essential lubrication maintenance supplies, butter can reduce friction, loss and corrosion between mechanical parts, to ensure the quality and performance of parts, extend the service life of parts, to ensure driving safety.

The scientific name of butter is called car grease, because the early car grease is mostly calcium based grease, its appearance is light yellow, looks a bit like pig's suet, so people call it butter. With the continuous development of vehicle technology, there are more and more types of grease, and the color is also derived from blue, black, red, green, white, gray, etc., but the name "butter" has been used.

What kinds of car grease can be divided into?

1, calcium base grease

Calcium-based grease is a kind of grease that appeared in the 30's, which is made of mineral lubricating oil with medium viscosity thickened by natural fatty acid calcium soap. The price is relatively cheap, and it can be widely used in small and medium-sized motors, pumps, tractors, automobiles, metallurgy, textile machinery and other medium speed and medium load rolling/sliding bearings.

The best working temperature of calcium grease is -10℃~60℃, which has good water resistance, but poor heat resistance, and the calcium soap hydrate will be hydrolyzed to about 100℃, resulting in the loss of consistency and lubrication of the grease. When calcium based grease is used on the hub of the trailer axle, it is easy to cause lubrication failure due to high temperature, resulting in overheating of the wheel end and fire, so it is basically eliminated on heavy transport vehicles at present.

2, general lithium grease

Lithium grease is made of natural fatty acid lithium soap, thickened medium viscosity mineral lubricating oil or synthetic lubricating oil, general lithium grease belongs to one of the lithium grease, the price is generally more moderate.

General lithium grease has good water resistance, machine stability, rust resistance and oxidation stability, belongs to a multi-purpose, long life, wide temperature range of use, applicable temperature range of -20℃~120℃, can meet the needs of most lubrication parts on the vehicle, such as saddle, universal joint, pressure bearings, etc. General chassis butter is used in this grease.

3, extreme pressure lithium grease

Commonly known as "high temperature butter", compared with general lithium grease high temperature performance is higher, the maximum use temperature can reach 160 ° C, suitable for heavy, high temperature, extreme pressure bearing lubrication, such as trailer axle hub this high temperature, high speed running parts, or other use of general lithium grease performance is slightly insufficient environment. Of course, the price is relatively high.

In addition to the above three more common greases, there are several greases:

Lithium molybdenum disulfide grease:

This grease is gray or black gray oil paste, commonly applicable temperature range -20℃ ~ 120℃, lubricity, mechanical safety, water resistance and oxidation stability is good, while containing special extreme pressure additives, can provide efficient lubrication protection for bearings and gears under heavy load and impact load, mostly used for high temperature, heavy duty mining machinery and equipment lubrication.

Graphite grease:

Made of inorganic thickening agent thickened ester synthetic oil with ultra-fine graphite powder, anti-oxidation, anti-corrosion and other additives, suitable for the temperature range of -20 ~ 450 °C, the highest intermittent temperature resistance up to 500°C, but due to the large friction coefficient of graphite grease, generally only suitable for low speed, high temperature and heavy load friction parts lubrication, rust, corrosion protection, such as leaf springs. After applying graphite grease on the contact surface of the spring, the rough surface between the spring can be filled, the pressure resistance and impact resistance of the spring can be improved, the uniform force can be ensured, and the service life of the spring can be improved.

How to choose the car grease label?

At present, most of China's vehicles use 2 # and 3 # lithium-based greases.

Among them, the consistency of 2 # grease is moderate, easy to fill, if the owner of the long-term running mark load, and the transport route is mostly plain, the use of the vehicle temperature is not too high, you can choose 2 # lithium grease;

If the owner often runs in the mountains, or other rugged routes that require frequent braking, especially in the southern mountains, or often between the south and the north, the wheel end temperature of the vehicle is often high, it is suitable to choose 3 # lithium grease.