KEH Series
30 - 50 Bar Middle Pressure PET Screw Air Compressor
It features a high-efficiency air end, a reliable control system, a low noise level and a long lifespan.
It helps to reduce energy costs and improve the overall efficiency of the production process.
Moreover, it is easy to install and maintain, making it the perfect choice for businesses looking for an efficient, reliable and cost-effective solution.
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High-pressure Section-reliable Single-screw Air End
No leakage triangle, volumetric efficiency is greater than 90%, higher efficiency, single-stage compression ratio under normal pressure is as high as 30.
The dynamic balance of the meshing pair is better, which makes the bearingsand other components have a longer life, and makes the vibration and noise of the whole machine smaller.
The star wheel is made of special rare materials with better mechanical properties, and precise processing technology reduces vibration and wear.
The high-precision manufacturing and processing of the single-screw air end shell in the high-pressure section enables it to withstand pressures up to 70bar.
The PM VSD motor is combined with vector frequency conversion technology to accurately adjust the speed and compression ratio, and the voltage adjustment range can reach 2.5~5.0MPa.
Constant Pressure Air Supply
Frequency conversion control can instantly respond to changes in air volume used by customers, and the air supply pressure fluctuation is stable below ±0.1kg/cm2.
There is no 1~2kg/cm2 setting required for the empty-to-weight difference of traditional air compressors.
High-Efficiency Two-Stage Compression Air End
➱The two compression stages are driven by precise gears, so that the rotor of each stage of compression unit can obtain the ideal linear speed, making the air compressor have better energy efficiency.
➱Mist cold oil is sprayed between the first and secondary air end for intermediate cooling. The optimized flow channel design allows the compressed air to pass through with almost zero loss, significantly improving efficiency.
➱The entire series comes standard with permanent magnet variable frequency motors, combined with vector frequencyconversion technology, to precisely sense changes in air volume demand and adjust speed, making it more efficient and energy-saving.
➱The normal pressure section will produce first compressed air with a pressure of 6 bar. After oil and gas separation and cooler, it passes through the standard external freeze dryer and then enters the high pressure section for compression.
The compression process in the normal pressure section is closer to ideal isothermal compression, the compression efficiency is higher.
Guaranteeing Reliable Operation
It has a uniquely configured intelligent, fully-automatic and accurate testing system that conducts a series of rigorous tests on both the air end and the entire machine; Products must pass a variety of more severe simulated working conditions tests before they are delivered for use, ensuring that each Kotech air compressor is reliable and can handle
various working conditions of users.
-Air end test: overspeed, overpressure, overtemperature
-Complete machine test: operating status under various harsh working conditions
Intelligent Control System
-Clear human-computer interaction interface, supporting multiple
languages
-Better anti-interference performance.
-Remote on/off function.
-RS485 communication, can control multiple units sequentially.
– Optional power management module, energy consumption statistics are clear at a glance
-Modular design, better scalability.
-Equipped with CAN network communication interface.
-Optional 4G IoT control.
Supporting Industries
PET Blowing Industry
Compressed air that meets the pressure demands is required. The fluid flow rate of the completed pipeline depends on the flow rate of the medium and the size of the pipeline. A stable and reliable air source is undoubtedly the top priority.
Tire Industry
The pressure on the compressed air needs to be stable and reliable. If the pressure does not meet the requirements, the production will not be completed, and if the pressure is too high, components will be damaged. Stable output of compressed air pressure is more in line with requirements.
Water Treatment Industry
Modern sewage treatment methods are mainly divided into physical treatment, chemical treatment, physical and chemical treatment and biological treatment. These methods basically require compressed air. Energy-saving and reliable compressed air is crucial.
Gas Boost Industry
Air boosting systems require careful consideration of safety issues, as accidents can occur during the boosting process. Stable pressure, continuous output, and pulse-free air compressor are undoubtedly more suitable for needs.
Air-cooled Model Parameter Form (3.0MPa)
| Model | Airflow m³/min |
Working Pressure Mpa |
Power kW |
Cooling Air Volume m³/min |
Outlet Size | Dimensions | Weight kg |
||
| L | W | H | |||||||
| KEH-45A | 5.0 | 3 | 45 | 8370 | DN32 | 2380 | 1600 | 1750 | 2130 |
| KEH-90A | 10.0 | 3 | 90 | 16740 | DN40 | 3000 | 1700 | 1900 | 3200 |
| KEH-132A | 15.0 | 3 | 132 | 24550 | DN40 | 3000 | 1700 | 1900 | 3800 |
| KEH-200A | 20.5 | 3 | 200 | 37200 | DN50 | 3500 | 1900 | 2250 | 4600 |
| KEH-220A | 25.0 | 3 | 220 | 40920 | DN50 | 3500 | 1900 | 2250 | 5300 |
| The discharge temperature is ambient temperature +15℃ | |||||||||
Water-cooled Model Parameter Form (3.0MPa)
| Model | Airflow m³/min |
Working Pressure Mpa |
Power kW |
Cooling Water Volume m³/min |
Outlet Size | Dimensions | Weight kg |
||
| L | W | H | |||||||
| KEH-45W | 5.0 | 3 | 45 | 4.64 | DN32 | 2650 | 1650 | 1960 | 2130 |
| KEH-90W | 10.0 | 3 | 90 | 9.29 | DN40 | 2650 | 1650 | 1960 | 3200 |
| KEH-132W | 15.0 | 3 | 132 | 13.62 | DN40 | 3000 | 1650 | 2050 | 3800 |
| KEH-200W | 20.5 | 3 | 200 | 20.64 | DN50 | 3450 | 1900 | 2250 | 4600 |
| KEH-220W | 25.0 | 3 | 220 | 22.70 | DN50 | 3450 | 1900 | 2250 | 5300 |
| Discharge Temperature≤40℃ | |||||||||
Air-cooled Model Parameter Form (4.0MPa)
| Model | Airflow m³/min |
Working Pressure Mpa |
Power kW |
Cooling Air Volume m³/min |
Outlet Size | Dimensions | Weight kg |
||
| L | W | H | |||||||
| KEH-55A | 5.0 | 4 | 55 | 10230 | DN32 | 2380 | 1600 | 1750 | 2130 |
| KEH-110A | 10.0 | 4 | 110 | 20460 | DN40 | 3000 | 1700 | 1900 | 3200 |
| KEH-160A | 15.0 | 4 | 160 | 29760 | DN40 | 3000 | 1700 | 1900 | 3800 |
| KEH-220A | 20.5 | 4 | 220 | 40920 | DN50 | 3500 | 1900 | 2250 | 4600 |
| KEH-250A | 25.0 | 4 | 250 | 46500 | DN50 | 3500 | 1900 | 2250 | 5300 |
| The discharge temperature is ambient temperature +15℃ | |||||||||
Water-cooled Model Parameter Form (4.0MPa)
| Model | Airflow m³/min |
Working Pressure Mpa |
Power kW |
Cooling Water Volume m³/min |
Outlet Size | Dimensions | Weight kg |
||
| L | W | H | |||||||
| KEH-55W | 5.0 | 4 | 55 | 5.68 | DN32 | 2650 | 1650 | 1960 | 2130 |
| KEH-110W | 10.0 | 4 | 110 | 11.35 | DN40 | 2650 | 1650 | 1960 | 3200 |
| KEH-160W | 15.0 | 4 | 160 | 16.51 | DN40 | 3000 | 1650 | 2050 | 3800 |
| KEH-220W | 20.5 | 4 | 220 | 22.70 | DN50 | 3450 | 1900 | 2250 | 4600 |
| KEH-250W | 25.0 | 4 | 250 | 25.80 | DN50 | 3450 | 1900 | 2250 | 5300 |
| Discharge Temperature≤40℃ | |||||||||
Water-cooled Model Parameter Form (5.0MPa)
| Model | Airflow m³/min |
Working Pressure Mpa |
Power kW |
Cooling Water Volume m³/min |
Outlet Size | Dimensions | Weight kg |
||
| L | W | H | |||||||
| KEH-75W | 5.0 | 5 | 75 | 7.74 | DN32 | 2650 | 1650 | 1960 | 2560 |
| KEH-132W | 10.0 | 5 | 132 | 13.62 | DN40 | 2650 | 1650 | 1960 | 3100 |
| KEH-185W | 15.0 | 5 | 185 | 19.09 | DN40 | 3000 | 1650 | 2050 | 4050 |
| KEH-250W | 20.5 | 5 | 250 | 25.80 | DN50 | 3450 | 1900 | 2250 | 4950 |
| KEH-280W | 25.0 | 5 | 280 | 28.90 | DN50 | 3450 | 1900 | 2250 | 5650 |
| Discharge Temperature≤40℃ | |||||||||
High-pressure Section-reliable Single-screw Air End
No leakage triangle, volumetric efficiency is greater than 90%, higher efficiency, single-stage compression ratio under normal pressure is as high as 30.
The dynamic balance of the meshing pair is better, which makes the bearingsand other components have a longer life, and makes the vibration and noise of the whole machine smaller.
The star wheel is made of special rare materials with better mechanical properties, and precise processing technology reduces vibration and wear.
The high-precision manufacturing and processing of the single-screw air end shell in the high-pressure section enables it to withstand pressures up to 70bar.
The PM VSD motor is combined with vector frequency conversion technology to accurately adjust the speed and compression ratio, and the voltage adjustment range can reach 2.5~5.0MPa.
Constant Pressure Air Supply
Frequency conversion control can instantly respond to changes in air volume used by customers, and the air supply pressure fluctuation is stable below ±0.1kg/cm2.
There is no 1~2kg/cm2 setting required for the empty-to-weight difference of traditional air compressors.
High-Efficiency Two-Stage Compression Air End
➱The two compression stages are driven by precise gears, so that the rotor of each stage of compression unit can obtain the ideal linear speed, making the air compressor have better energy efficiency.
➱Mist cold oil is sprayed between the first and secondary air end for intermediate cooling. The optimized flow channel design allows the compressed air to pass through with almost zero loss, significantly improving efficiency.
➱The entire series comes standard with permanent magnet variable frequency motors, combined with vector frequencyconversion technology, to precisely sense changes in air volume demand and adjust speed, making it more efficient and energy-saving.
➱The normal pressure section will produce first compressed air with a pressure of 6 bar. After oil and gas separation and cooler, it passes through the standard external freeze dryer and then enters the high pressure section for compression.
The compression process in the normal pressure section is closer to ideal isothermal compression, the compression efficiency is higher.
Guaranteeing Reliable Operation
It has a uniquely configured intelligent, fully-automatic and accurate testing system that conducts a series of rigorous tests on both the air end and the entire machine; Products must pass a variety of more severe simulated working conditions tests before they are delivered for use, ensuring that each Kotech air compressor is reliable and can handle
various working conditions of users.
-Air end test: overspeed, overpressure, overtemperature
-Complete machine test: operating status under various harsh working conditions
Intelligent Control System
-Clear human-computer interaction interface, supporting multiple
languages
-Better anti-interference performance.
-Remote on/off function.
-RS485 communication, can control multiple units sequentially.
– Optional power management module, energy consumption statistics are clear at a glance
-Modular design, better scalability.
-Equipped with CAN network communication interface.
-Optional 4G IoT control.
Supporting Industries
PET Blowing Industry
Compressed air that meets the pressure demands is required. The fluid flow rate of the completed pipeline depends on the flow rate of the medium and the size of the pipeline. A stable and reliable air source is undoubtedly the top priority.
Tire Industry
The pressure on the compressed air needs to be stable and reliable. If the pressure does not meet the requirements, the production will not be completed, and if the pressure is too high, components will be damaged. Stable output of compressed air pressure is more in line with requirements.
Water Treatment Industry
Modern sewage treatment methods are mainly divided into physical treatment, chemical treatment, physical and chemical treatment and biological treatment. These methods basically require compressed air. Energy-saving and reliable compressed air is crucial.
Gas Boost Industry
Air boosting systems require careful consideration of safety issues, as accidents can occur during the boosting process. Stable pressure, continuous output, and pulse-free air compressor are undoubtedly more suitable for needs.
Air-cooled Model Parameter Form (3.0MPa)
| Model | Airflow m³/min |
Working Pressure Mpa |
Power kW |
Cooling Air Volume m³/min |
Outlet Size | Dimensions | Weight kg |
||
| L | W | H | |||||||
| KEH-45A | 5.0 | 3 | 45 | 8370 | DN32 | 2380 | 1600 | 1750 | 2130 |
| KEH-90A | 10.0 | 3 | 90 | 16740 | DN40 | 3000 | 1700 | 1900 | 3200 |
| KEH-132A | 15.0 | 3 | 132 | 24550 | DN40 | 3000 | 1700 | 1900 | 3800 |
| KEH-200A | 20.5 | 3 | 200 | 37200 | DN50 | 3500 | 1900 | 2250 | 4600 |
| KEH-220A | 25.0 | 3 | 220 | 40920 | DN50 | 3500 | 1900 | 2250 | 5300 |
| The discharge temperature is ambient temperature +15℃ | |||||||||
Water-cooled Model Parameter Form (3.0MPa)
| Model | Airflow m³/min |
Working Pressure Mpa |
Power kW |
Cooling Water Volume m³/min |
Outlet Size | Dimensions | Weight kg |
||
| L | W | H | |||||||
| KEH-45W | 5.0 | 3 | 45 | 4.64 | DN32 | 2650 | 1650 | 1960 | 2130 |
| KEH-90W | 10.0 | 3 | 90 | 9.29 | DN40 | 2650 | 1650 | 1960 | 3200 |
| KEH-132W | 15.0 | 3 | 132 | 13.62 | DN40 | 3000 | 1650 | 2050 | 3800 |
| KEH-200W | 20.5 | 3 | 200 | 20.64 | DN50 | 3450 | 1900 | 2250 | 4600 |
| KEH-220W | 25.0 | 3 | 220 | 22.70 | DN50 | 3450 | 1900 | 2250 | 5300 |
| Discharge Temperature≤40℃ | |||||||||
Air-cooled Model Parameter Form (4.0MPa)
| Model | Airflow m³/min |
Working Pressure Mpa |
Power kW |
Cooling Air Volume m³/min |
Outlet Size | Dimensions | Weight kg |
||
| L | W | H | |||||||
| KEH-55A | 5.0 | 4 | 55 | 10230 | DN32 | 2380 | 1600 | 1750 | 2130 |
| KEH-110A | 10.0 | 4 | 110 | 20460 | DN40 | 3000 | 1700 | 1900 | 3200 |
| KEH-160A | 15.0 | 4 | 160 | 29760 | DN40 | 3000 | 1700 | 1900 | 3800 |
| KEH-220A | 20.5 | 4 | 220 | 40920 | DN50 | 3500 | 1900 | 2250 | 4600 |
| KEH-250A | 25.0 | 4 | 250 | 46500 | DN50 | 3500 | 1900 | 2250 | 5300 |
| The discharge temperature is ambient temperature +15℃ | |||||||||
Water-cooled Model Parameter Form (4.0MPa)
| Model | Airflow m³/min |
Working Pressure Mpa |
Power kW |
Cooling Water Volume m³/min |
Outlet Size | Dimensions | Weight kg |
||
| L | W | H | |||||||
| KEH-55W | 5.0 | 4 | 55 | 5.68 | DN32 | 2650 | 1650 | 1960 | 2130 |
| KEH-110W | 10.0 | 4 | 110 | 11.35 | DN40 | 2650 | 1650 | 1960 | 3200 |
| KEH-160W | 15.0 | 4 | 160 | 16.51 | DN40 | 3000 | 1650 | 2050 | 3800 |
| KEH-220W | 20.5 | 4 | 220 | 22.70 | DN50 | 3450 | 1900 | 2250 | 4600 |
| KEH-250W | 25.0 | 4 | 250 | 25.80 | DN50 | 3450 | 1900 | 2250 | 5300 |
| Discharge Temperature≤40℃ | |||||||||
Water-cooled Model Parameter Form (5.0MPa)
| Model | Airflow m³/min |
Working Pressure Mpa |
Power kW |
Cooling Water Volume m³/min |
Outlet Size | Dimensions | Weight kg |
||
| L | W | H | |||||||
| KEH-75W | 5.0 | 5 | 75 | 7.74 | DN32 | 2650 | 1650 | 1960 | 2560 |
| KEH-132W | 10.0 | 5 | 132 | 13.62 | DN40 | 2650 | 1650 | 1960 | 3100 |
| KEH-185W | 15.0 | 5 | 185 | 19.09 | DN40 | 3000 | 1650 | 2050 | 4050 |
| KEH-250W | 20.5 | 5 | 250 | 25.80 | DN50 | 3450 | 1900 | 2250 | 4950 |
| KEH-280W | 25.0 | 5 | 280 | 28.90 | DN50 | 3450 | 1900 | 2250 | 5650 |
| Discharge Temperature≤40℃ | |||||||||
