Lubricating grease classification: Shenji will interpret it for you.

What is lubricating grease?

Lubricating grease is a stable solid or semi-solid product composed of thickeners dispersed in liquid lubricants, which can be supplemented with additives and fillers aimed at improving certain characteristics of lubricating grease. Lubricating grease can adhere to vertical surfaces at room temperature without loss, and can work in open or poorly sealed friction areas, with holding points that cannot be replaced by other lubricants. Therefore, lubricating grease is used as a lubricating material in many parts of automobiles and construction machinery.

Types of commonly used lubricating greases

1. Calcium based lubricating grease

This is both a lubricating grease commonly referred to as butter. The most widely used lubricating grease in the current automotive maintenance industry. This type of grease is a technology from the 1930s.

In developed countries, it is already a product that has been phased out. Due to its low price, it is widely used in the automotive repair industry. It is strongly recommended not to use such products again. At least do not use it in your own car.

2. Graphite calcium based grease

Usually black, this is due to the addition of a certain proportion of flake graphite in the lubricating grease, which has good water resistance and rolling resistance. Especially suitable for lubrication of automotive rear steel plates. Tests have shown that the lifespan of automotive steel plate springs lubricated with graphite calcium based grease is more than twice that of ordinary grease lubrication. It is recommended that car enthusiasts no longer use ordinary butter to lubricate the rear wheel steel plate.

3. General lithium based lubricating grease for automobiles

This is a lubricating grease commonly used in the modern automotive industry. It has the characteristics of long lifespan, good water resistance, and good lubrication effect. It is a substitute product for regular butter. Can be used for lubrication of the vast majority of automobiles. Its service life is twice that of calcium based grease.

4. Extreme pressure composite lithium based lubricating grease

This is a lubricating grease with higher extreme pressure and wear resistance than general lithium based grease. It should be noted that lubricating grease, like lubricating oil, has a grade to adapt to different environmental temperatures and usage conditions. Generally speaking, the larger the number, the more viscous it becomes. Usually, it can be used throughout the year in the south

2 #, 1 # can be used in winter in the north. 3 # is only applicable to tropical heavy-duty vehicles. Of course, strictly speaking, the selection of lubricating grease is also influenced and constrained by other factors.

The correct use of lubricating grease:

1. The amount of lubrication added should be appropriate

Excessive fat addition will increase the friction torque, temperature, and fat consumption; If the amount of grease added is too small, reliable lubrication cannot be obtained and dry friction occurs. Generally speaking, the appropriate amount of grease added is 1/3 to 1/2 of the total clearance volume inside the bearing. But depending on the situation, sometimes grease should be applied to the edge of the bearing and cavity lubrication should be implemented.

2. Pay attention to preventing the mixing of different types, grades, and new and old lubricating greases

Avoid cross use of grease containers and tools, as it may cause adverse effects such as decreased drop points, increased cone penetration, and decreased mechanical stability of the grease.

3. Pay attention to the replacement of new grease

Due to the continuous improvement and changes in the variety and quality of lubricating grease, when old equipment switches to new lubricating grease, it should be tested and tested before formal use; When replacing with new grease, the waste lubricating grease should be removed first and the components cleaned thoroughly. When adding lubricating grease, the waste lubricating grease should be squeezed out until new lubricating grease is seen at the grease outlet.

4. Pay attention to the management of the process of adding lubricating grease

Before receiving and adding lubricating grease, strict attention should be paid to the cleanliness of containers and tools. The grease supply port on the equipment should be wiped clean in advance to prevent the mixing of mechanical impurities, dust, and sand particles.

5. Pay attention to timely replacement of seasonal grease

If the temperature difference between winter and summer in the environment where the device is located varies greatly, using winter grease in summer or vice versa will have the opposite effect.

6. Pay attention to regularly adding and changing lubricating grease

The replacement time of lubricating grease should be determined according to the specific usage situation, ensuring reliable lubrication without causing waste of grease.

7. Do not use wooden or paper containers to package lubricating grease

To prevent oil loss, hardening, mixing with water, or contamination and deterioration, it should be stored in a cool and dry place.