At present, there are many lubricating oil products. The emergence of these products is mainly to complete the lubrication of some equipment systems. Now the vacuum pump oil can be used in the main industries of lubricating oil products and can attract people's attention. Many enterprises may not be familiar with the difference between the two. Today, let's talk about the difference between vacuum pump oil and ordinary lubricating oil: Vacuum pump oil: it is a kind of lubricating oil specially developed and used for vacuum pump. Main features: 1. It has a very low steam pressure to prevent oil backflow diffusion from the internal cavity of the pump to the vacuum system. There is enough extreme vacuum. Very low evaporation and low energy consumption. 2. High quality thermal oxidation stability: it can improve the steam pressure of the system and reduce the vacuum. 3. High flash point: when the oil temperature rises, the light boiling oil molecules will not be easily volatilized, which can effectively maintain the pressure. General lubricating oil: it is the general name of a class of products, with thousands of varieties according to purpose. Let's talk about one of them. It's between two relatively moving objects, such as diesel oil and gasoline oil. Its function is to reduce the friction between two objects due to contact. Reduce damage to mechanical equipment caused by object friction. In addition, it also has the functions of cooling, rust prevention, cleaning, sealing and buffering. Why use vacuum pump oil for vacuum pump? First, because the vacuum pump oil has viscosity, the viscosity determines the sealing performance of the vacuum pump, the degree of viscosity and poor sealing; If the viscosity is too high, the friction between the pump blade and the cylinder will increase, and the lubrication will become worse. At the same time, the rotation of the rotor will become difficult, the pressure of the motor will be higher and higher, and the oil temperature will be higher and higher. The rise of oil temperature will accelerate the emulsification of pump oil and affect the vacuum degree. Second, because the chemical properties of the vacuum pump oil are more stable and the impurities such as water content, water-soluble acid and insoluble alkali are much smaller, the special oil energy efficiency ratio is adopted to avoid the repeated replacement of the vacuum pump oil and ensure the cleanliness of the pump. Third, the saturated vapor pressure of the special oil for vacuum pump should be low, and the volatile light distillation should be less. If it is an ordinary vacuum pump oil or highly volatile oil, the use of non vacuum pump special oil is often faced with refueling. On the way to use the vacuum pump, it is necessary to often check the special oil pump emulsified with vacuum pump oil, cemented carbide, no impurities or unknown liquid and the increased quantity of sudden vacuum pump oil. The vacuum pump oil must be replaced and changed as early as possible. At the same time, the same type of vacuum pump oil can be purchased from professional vacuum pump manufacturers to ensure the normal use of the vacuum pump.