CMN oil less screw 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 oil free compressor adopts an advanced two-stage 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 screw compressor

Noisy - affects staff working, complaints from residents

Maintenance problem---Maintenance is hard, changing oil causes environmental pollution, and efficiency drops huge with delayed maintenance

High temperature - Potential safety hazard

How Does Oil-Free High-Pressure Screw Air Compressor Work?

In the working process of oil free rotary screw compressor, 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 in the oil free high pressure air compressor 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 Oil-Free High-Pressure Screw Compressor

CMN oil free rotary screw air compressor offers a perfect solution for PET bottle blow molding, especially for beverage bottles, cosmetic containers, medicine containers, and infusion containers.

Class 0 Oil-free---the industrial standard

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

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

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

For the CMG series high-pressure screw compressor, All parts getting in contact with compressed air are made of food-grade 304 stainless steel, and rotors are lubricated by water to ensure the compressed air absolutely clean and pure

Features of CMN High-Pressure Oil-Free 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, and isothermal compression to realize high efficiency.

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