Grease for Motor Bearing
Grease for Motor Bearing
2022年3月19日
Lubricating Oil Composition
Lubricating Oil Composition
2022年3月19日

Grease Classification

What is grease?Grease Classification

  • Grease is a stable solid or semi-solid product composed of thickener dispersed in liquid lubricant. Additives and fillers aimed at improving some characteristics of grease can be added.
  • The grease can be attached to the vertical surface without loss at room temperature, and can work in the friction parts with open or poor sealing. It has a holding point that can not be replaced by other lubricants. Therefore, grease is used as lubricating material in many parts of automobiles and construction machinery.Grease Classification
Types of common lubricating grease
  • Calcium base grease
  • This is a grease commonly known as butter. It is widely used in automobile maintenance industry. This grease is a technology from the 1930s.Grease Classification
  • In developed countries, it is already an obsolete product. Because of its low price, it is also widely used in the automobile maintenance industry. It is strongly recommended not to use such products again. At least don’t use it in your own car.Grease Classification
  •  Graphite calcium base grease
  • It is usually black because a certain proportion of flake graphite is added into the grease, which has good water resistance and rolling resistance. It is especially suitable for the lubrication of automobile rear steel plate. The tests of relevant parties have proved that the service life of automobile leaf spring lubricated with graphite calcium base grease is more than twice that lubricated with ordinary grease. It is recommended that car cutting riders no longer use ordinary grease to lubricate the rear wheel steel plate.Grease Classification
  • Automotive general lithium grease
  • This is a kind of grease commonly used in modern automobile industry. It has the characteristics of long service life, good water resistance and good lubrication effect. It is a substitute for ordinary butter. It can be used for the lubrication of most automobiles. Its service life is twice that of calcium based grease.Grease Classification
  • Extreme pressure composite lithium grease
  • This is a kind of grease with higher extreme pressure and wear resistance than general lithium grease. Note that different grades of lubricating oil are suitable for different service conditions. Generally speaking, the larger the number, the more viscous it is. Generally, it can be used all year round in the south Breaing.
  • available in winter in the North 1#. 3# only for tropical heavy-duty vehicles. Of course, strictly speaking, the choice of grease is also affected and restricted by other factors.
  • Correct use of grease:
  • The amount of lubrication filled shall be appropriate
  • If the amount of grease is too large, the friction torque will increase, the temperature will increase, and the grease consumption will increase; If the amount of grease is too small, reliable lubrication cannot be obtained and dry friction occurs. Generally speaking, the appropriate amount of grease is 1 / 3 ~ 1 / 2 of the total void volume in the bearing. However, according to the actual situation, sometimes the bearing edge should be greased and cavity lubrication should be implemented.
  • Pay attention to prevent the mixing of different types, brands and old and new greases
  • Avoid the cross use of grease containers and tools, otherwise it will have adverse effects on grease, such as drop point drop, cone penetration increase and mechanical stability decrease.
  • Pay attention to the replacement of new grease
  • As the variety and quality of lubricating grease are constantly improving and changing, when the old equipment changes to new lubricating grease, it should be tested first and can be officially used after trial; When replacing with new grease, first remove the waste grease and clean the components. When adding lubricating grease, the waste lubricating grease shall be squeezed out until new lubricating grease is seen at the grease discharge port.
Grease Classification

4. Pay attention to the management of grease filling process

Before receiving and filling lubricating grease, pay strict attention to the cleaning of containers and tools, and wipe the grease supply port on the equipment in advance to prevent the mixing of mechanical impurities, dust and sand.Grease Classification

5. Pay attention to the timely replacement of grease in season

For example, the temperature difference between winter and summer plums in the environment where the equipment is located varies greatly. If winter fat is used in summer or vice versa, the results will be counterproductive.Grease Classification

6. Pay attention to adding and changing lubricating grease regularly

The addition and replacement time of lubricating grease shall be determined according to the specific use conditions, which shall ensure reliable lubrication without causing waste of grease.Grease Classification

7. Do not pack grease in wooden or paper containers

 

Prevent oil loss from hardening, mixing with water or being polluted and deteriorated, and store in a cool and dry place.