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CM/GPV Series 20-40bar Variable Frequency Oil-free Screw Air Compressor
The oil-free screw air compressor with a pressure of up to 4.0MPa, equiped with a two-stage double-drive permanent magnet frequency conversion method to compress the air. The unique design optimizes the efficiency and creates a worry-free environment.
Pressure20~40bar
Motor power75-320Kw
FAD6.3～31.5m³/min
French technology
ISO Class 0 oil free
Super low noise and vibration
Features
CMN Offers the Most Efficient and Reliable Air Compressor Solution
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True oil-free screw compressorPure water is used for lubrication, which is directly injected into the compression chamber to play the role of lubrication, sealing and cooling. Refuse to use any lubricating oil, absolute oil-free guarantee. -
Lifelong Stable and Reliable
Oil-free Screw CompressorLifetime oil-free guarantee, compression system without any risk of oil contamination. The design life of the unit is more than 25 years. -
More energy-saving
oil-free screw compressorIsothermal compression saves energy by 15%-20% compared to piston oil-free air compressors. -
Oil-free screw compressor with lower maintenance costThe whole machine has no wearing parts, and the maintenance consumables are only air filter and water filter, so the maintenance is simple and convenient.
Why Choose Screw Type for 20-40bar Air Compression?
Pure oil-free medium pressure screw air compressor VS medium pressure piston air compressor
| Screw Air Compressor | Piston Air Compressor | |
| Particle impurities | The water cleans the air, and the dust particles and other impurities sucked in with the air stay in the water and are discharged out of the body through the automatic drainage and sewage valve. | Impurities such as dust particles sucked in with the air and dust particles falling off by friction of moving parts are compressed together |
| oil content | The oil content of compressed air is 0PPM, and has passed the third-party international authority German TUV class 0 oil-free certification | When the scraper ring and stuffing box are worn, the lubricating oil will enter the cylinder in the form of gas or liquid, resulting in the discharged compressed air containing oil |
| water content | Isothermal compression, the temperature of the compression chamber is generally only about 45°C, the water vapor mixture is separated by the patented water vapor separation barrel, and the water content of the compressed air is low | The operating temperature of the compression chamber of the piston machine is about 180°C, and the exhaust temperature after the aftercooler is about 85°C, and the compressed air has a high water content |
| Sanitation | All parts in contact with water and air are made of 304 or 316 food-grade stainless steel, which is food-grade safe, clean and hygienic. | Most of the parts in contact with water and air are made of ductile iron, cast iron, aluminum or carbon steel, which are easy to corrode, rust and pollute the compressed air |
| Corrosive gas content | The corrosive gas in the air is washed with pure water, stays in the water, and is discharged out of the body through the automatic drainage and sewage valve | The corrosive gas in the air is directly compressed, and after entering the machine, it will corrode the cast iron, ductile iron cylinder, device, etc. of the piston compressor |
| Screw Air Compressor | Piston Air Compressor | |
| Running power consumption | The screw machine is high-speed and light-loaded. Compared with the piston machine, the energy saving is about 20% in the case of a brand-new machine. | Low speed and heavy load, high power consumption |
| Maintenance consumables and accessories | water filter element, air filter | Oil primary filter, oil fine filter, air valve, piston ring, support ring, scraper ring, packing, bearing bush, etc. |
| Maintenance cost | Low, taking a screw compressor with an installed power of 150kw as an example, the annual maintenance cost does not exceed 20,000 yuan | Taking a piston engine with an installed power of 150kw as an example, the annual maintenance cost is about 100,000 yuan |
| Screw Air Compressor | Piston Air Compressor | |
| efficiency | The direct connection between the air end and the motor has high transmission efficiency and small power loss, and the compression efficiency is above 95%. | Reciprocating piston type, generally three-stage or four-stage compression, complex structural pipeline, large pressure loss, high specific power, and large power consumption |
| Vibration | The power balance is good, the operation is stable, the coin does not fall when the unit is running, and there is no need for a fixed foundation | The force is unbalanced and the vibration is large, so the foundation or shock absorber needs to be fixed |
| Noise | Low noise, taking the 242kw model as an example, the noise is about 80 decibels | High noise, taking the 250kw model as an example, the noise is about 110 decibels |
| Temperature | The whole machine is cooled by water, as long as the pressure and flow of cooling water are guaranteed, the machine can run stably at around 45°C for a long time | The temperature in the cylinder is around 180°C, and it is prone to high temperature alarm and shutdown |
| Temperature | The whole machine is cooled by water, as long as the pressure and flow of cooling water are guaranteed, the machine can run stably at around 45°C for a long time | The temperature in the cylinder is around 180°C, and it is prone to high temperature alarm and shutdown |
| Temperature | The whole machine is cooled by water, as long as the pressure and flow of cooling water are guaranteed, the machine can run stably at around 45°C for a long time | The temperature in the cylinder is around 180°C, and it is prone to high temperature alarm and shutdown |
| Temperature | The whole machine is cooled by water, as long as the pressure and flow of cooling water are guaranteed, the machine can run stably at around 45°C for a long time | The temperature in the cylinder is around 180°C, and it is prone to high temperature alarm and shutdown |
| Temperature | The whole machine is cooled by water, as long as the pressure and flow of cooling water are guaranteed, the machine can run stably at around 45°C for a long time | The temperature in the cylinder is around 180°C, and it is prone to high temperature alarm and shutdown |
Technical Parameters
We not only provide air compressors, but also offer perfect solutions
CM/GPV series 20-40bar variable frequency oil-free screw air compressor technical parameters
| Model | Pressure | FAD | Power | Noise | Weight | Outline dimension | |||
|---|---|---|---|---|---|---|---|---|---|
| MPa | Psi | m³/min | cfm | KW | HP | dB(A) | kg | L×W×H | |
| mm | |||||||||
| CM75G | 2.0-4.0 | 290-580 | 6.3 | 222 | 75 | 100 | 70 | 2100 | 2750×1250×1480 |
| CM75GPV | 2.0-4.0 | 290-580 | 2.5-6.3 | 88-222 | 37 | 50 | 70 | 2250 | 2000×1900×1480 |
| 37 | 50 | ||||||||
| CM90G | 2.0-4.0 | 290-580 | 8.2 | 290 | 90 | 123 | 72 | 2580 | 3000×1350×1540 |
| CM110GPV | 2.0-4.0 | 290-580 | 3.3-8.2 | 117-290 | 55 | 75 | 72 | 2450 | 2500×2000×1550 |
| 55 | 75 | ||||||||
| CM110G | 2.0-4.0 | 290-580 | 10.2 | 360 | 110 | 150 | 72 | 2630 | 3000×1350×1540 |
| CM130GPV | 2.0-3.0 | 290-435 | 5.4-13.5 | 191-477 | 55 | 75 | 75 | 3000 | 2500×2000×1550 |
| 75 | 100 | ||||||||
| CM150GPV | 2.0-4.0 | 290-580 | 5.4-13.5 | 191-477 | 75 | 100 | 75 | 3100 | 2500×2000×1550 |
| 75 | 100 | ||||||||
| CM200GPV | 2.0-4.0 | 290-580 | 7.1-17.8 | 251-629 | 90 | 120 | 75 | 3850 | 2760×2250×1670 |
| 110 | 150 | ||||||||
CM242GPV | 2.0-4.0 | 290-580 | 9.6-24.0 | 339-847 | 110 | 150 | 75 | 3950 | 2760×2250×1670 |
| 132 | 180 | ||||||||
| CM320GPV | 2.0-4.0 | 290-580 | 12.6-31.5 | 445-1113 | 160 | 220 | 85 | 5100 | 3800x2100x2250 |
| 160 | 220 | ||||||||
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