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What Are the Main Factors that Affect the Operation of Lubricating Oil?

  • In addition to the functions of lubrication, cooling, cleaning, sealing, protection and buffer.
  • The working environment of bearing lubricating oil is also very bad.
  • 1. In the splashing and circulating lubrication, the  is constantly in contact with various metal parts and air.
  • which promotes the gradual aging and deterioration of the oil under the catalysis of metal.
  • The lubricating oil contacts with various high-temperature parts in the bearing. 
  • For example, the temperature of the upper part of the cylinder wall is 190 ~ 290 ℃, and the average oil temperature in the crankcase is 100 ℃. 
  • Under such high temperature conditions, the oil will deteriorate due to severe oxidation.
  • 3. Combustion waste gas and incomplete combustion mixture will also flow into the crankcase through various gaps.
  • which will produce oil sludge and acidic substances in the lubricating oil, and then cause deterioration and failure of the lubricating oil.
  • 4. Dust, metal wear debris, carbon deposition after combustion, etc. will degrade the quality of lubricating oil.
  • Therefore, the working conditions of the lubricating oil in the bearing are extremely harsh, and the lubricating oil is indispensable to maintain the normal operation of the bearing.
  •  which puts forward higher requirements for the performance of the bearing lubricating oil.
  • Lubricating oils for various purposes are prepared by mixing base oils with different grades of viscosity and several additives in different proportions. 
  • The main difference between mineral oil and synthetic oil lies in the difference of base oil. 
  • The base oil of mineral oil is refined from the residual tower bottom oil after fractionating useful light substances (such as aviation oil, gasoline, etc.) 
  •  In essence, it uses the poor components in crude oil. There are thousands of different mixture molecules in crude oil. 
  • Even if the refining technology is refined, it can not remove all the bad substances and impurities.
Lubricating Oil

What Are the Main Factors that Affect the Operation of Lubricating Oil?

  • After the lubricating oil enters the bearing, due to the effect of adhesion, the oil rotates with the rotating shaft.
  • Forms an oil film in the bearing and lifts the rotating shaft, so as to realize liquid lubrication of bearing bush and journal and ensure 
  • The safe operation of the machine in a long period of time.
  • However, with the increase of operation time, the impurities in the oil will gradually increase.
  • and its lubrication performance and effect will be greatly reduced.
  • The main factors affecting the lubricating performance of lubricating oil are as follows:
  • In contrast, the base oil of synthetic oil is ethylene and propylene dispersed from gas or natural gas in crude oil.
  • And then refined into a base liquid composed of macromolecules through complex chemical reactions such as polymerization and catalysis.
  •  In essence, it uses the better components in crude oil, which are chemically reacted and achieve the expected molecular morphology through artificial control.
  •  Its molecules are arranged neatly and have a strong ability to resist external variables.
  • Therefore, synthetic oil has a better constitution, and its ability to thermal stability, 
  • antioxidant reaction and viscosity change is naturally much stronger than mineral oil. 
  • In addition to the above, the mineral oil cannot completely remove the impurities contained in the refining process.
  • so the flow point is high and is not suitable for cold zone operation. 
  • which puts forward higher requirements for the performance of the bearing .
  • Lubricating oils for various purposes are prepared by mixing base oils with different grades of viscosity and several additives in different proportions. 
  • The main difference between mineral oil and synthetic oil lies in the difference of base oil. 
  • Synthetic oil contains no impurities, and its flow point can be below – 50 ℃.
  •  If there is a great difference in climate and temperature in aircraft, spacecraft, submarines and other occasions, synthetic oil must be use