CMN Technology Co.,Ltd.
CMN Technology Co.,Ltd.

High Pressure Oil Free Screw Air Compressor

CMN oil-free high pressure screw air compressor, with an air supply pressure of 20 to 40 bar, can be adapted to high-standard gas processes such as PET bottle blowing and blow molding. The whole high pressure oil free air compressor does not contain any lubricating oil to ensure that the outlet compressed air is absolutely oil-free. The screw-type air end performs two-stage compression with low vibration and noise. As one of the best oil free compressor suppliers, CMN oil free high pressure air compressor adopts an advanced two stages dual-drive design and is equipped with two permanent magnet variable frequency motors with an efficiency of up to 97%. The inverter drive always supplies air with optimal efficiency. Maintenance is simple, only the air filter and water filter need to be replaced, reducing maintenance costs by 50% to 80%.

Pain Points of Operating a High Pressure Reciprocating Piston Compressor

  • Noisy---affect staff working, complaints from residents

  • Maintenance problem---Maintenance is hard, chaging oil causes enviromental pollution, efficiency drops huge with delayed maintenance

  • High temperature---Potential safety hazard


    Now you get another choice from CMN---High pressure Screw Compressor !

How Does High Pressure Oil Free Screw Air Compressor Work?

Through two-stage compression, the CMG series can provide pure oil-free compressed air of 20 to 40 bar pressure. The air enters the first-level air end through the air filter element for compression. When the pressure reaches 5 to 7 bar, it enters the water vapor separation barrel for separation. Then the compressed air enters the second stage air end for secondary compression. 


At this time, the pressure will reach 20 to 40 bar. It is separated again through the second stage water vapor separation barrel, passes through the post-processing equipment, and reaches the user. The motor is directly connected to the air end for transmission, with a maximum speed of 3000rpm. The speed is automatically adjusted through a frequency converter (frequency range 40% to 100%) to ensure that the gas production of the high pressure oil free compressor matches the actual gas consumption to achieve the purpose of reducing energy consumption.



Industry Application of High Pressure Oil Free Screw Air Compressor

CMN high pressure oil free screw air compressor offers a perfect solution for PET bottle blow molding, especially for beverage bottle, cosmetic container, medicine container and infusion container. 

Class 0 Oil free---the industrial standard

  • Beverage bottle/ water bottle production: generally require 25~35bar compressed air. Oil pollution will influences the taste of beverage or water and affects consumers' health

  • Cosmetic container: Touch with skin directly. Oil pollution will affects skin health.

  • Medicine and infusion container: Strictly regulated by FDA, product shall be free of oil and bacterial.


For CMG series, All parts getting contacted with compressed air are made of food grade 304 stainless steel, rotors are lubricated by water to ensure the compressed air absolutely clean and pure

Features of CMN High Pressure Oil Free Screw Air Compressor

  • No wearing parts design: CMN high pressure oil free air compressor has fewer parts than traditional piston compressor, has a simple structure, and only needs to replace the air filter and water filter for maintenance, operation cost is low.

  • Low noise and low vibration: screw type compression, very low noise and small vibration.

  • Energy saving: Equipped with permanent magnet variable frequency motor, isothermal compression to realize high efficiency.

Send us an inquiry for an energy saving report or more information!

Get in Touch with CMN Compressor
Get in Touch with CMN Compressor
Leading Compressor Manufacturer of Oil Free Air Compressor, Oil Injected Compressor, Special Gas Compressor, and
After Treatment Equipment