How to Choose Vacuum Pump Oil Correctly by Rotary Vane Vacuum Pump

We all know that vacuum pump oil plays a very important role in the rotary vane vacuum pump, especially the 2X rotary vane vacuum pump, its performance is closely related to the vacuum pump oil, especially the ultimate vacuum pressure of the vacuum pump, and the service life. Vacuum pump oil is not only used as a medium to obtain vacuum, but also to lubricate, cool and seal vacuum pump friction points. The following is a brief description of how to choose a vacuum pump oil for a rotary vane vacuum pump:

Vacuum pump oil main performance requirements are as follows:

Very low vapor pressure; this is the most important performance of the vacuum pump oil. Due to the high degree of vacuum required for the rotary vane vacuum pump, a narrow wax-base fraction oil is generally used.

Good thermal oxidation stability; vacuum pump develops to high speed constantly, due to the high temperature friction of the sliding vane and the pump body, the oil temperature is increased, the oil product is easily oxidized and decomposed, especially the diffusion pump is often working in a high temperature environment, so that As the vapor pressure in the system rises and the vacuum level decreases, the vacuum pump oil is required to have good thermal oxidation stability.

Appropriate viscosity and good viscosity-temperature characteristics: The vacuum chamber cavity volume is constantly changing to form the exhaust effect, requiring the lubricating oil should have the appropriate viscosity and viscosity-temperature characteristics.

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