Answer: The difference in structure between screw air compressors and hydraulic equipment determines that screw air compressors have higher requirements for the extreme pressure performance of lubricating oil. Therefore, the lubricating oil of screw air compressors contains a large amount of anti-wear additives to ensure that the lubricating oil effectively protects the rotors from wear when passing through the yin and yang rotors. The content of anti-wear additives in hydraulic oil is very small, so the price of hydraulic oil is 2/3 of the price of screw air compressor oil. If screw air compressors use this oil for a long time, it will cause serious wear of the rotors.
