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The single-stage permanent magnet variable frequency water-cooled screw air compressor is a highly efficient and energy-saving compressed air device. It utilizes a permanent magnet synchronous motor (PM motor) and variable frequency drive technology, coupled with a water-cooled heat dissipation system, to achieve low energy consumption, low noise, and highly stable compressed air supply. It is suitable for industrial applications with strict requirements on energy consumption, noise reduction, and continuous operation.
Product Parameters
| Intelligent PM VSD Screw Air Compressor | ||||||||
| Model | Air Delivery (m3/min) | Power (kW/hp) | Noise dB(A) | Outlet diameter | Dimensions (mm) | Weight (kg) | ||
| 8 bar | 10 bar | 13 bar | L * W * H | |||||
| RK10APM | 0.5-1.2 | 0.4-1.0 | 0.3-0.7 | 7.5/10 | 63 | G3/4 | 700*600*860 | 180 |
| RK15APM | 0.6-1.7 | 0.5-1.6 | 0.4-1.0 | 11/15 | 65 | G3/4 | 1000*750*1070 | 300 |
| RK20APM | 1.0-2.4 | 0.8-2.1 | 0.7-1.6 | 15/20 | 65 | G3/4 | 1000*750*1070 | 320 |
| RK30APM | 1.5-3.7 | 1.3-3.2 | 1.1-2.8 | 22/30 | 68 | G1 | 1350*850*1120 | 430 |
| RK40APM | 2.0-5.0 | 1.6-3.9 | 1.4-3.4 | 30/40 | 68 | G1 | 1350*800*1110 | 460 |
| RK50APM | 2.5-6.2 | 2.2-5.6 | 2.0-4.9 | 37/50 | 69 | G1 1/2 | 1500*1000*1350 | 650 |
| RK60APM | 3.0-7.3 | 2.4-6.0 | 2.3-5.9 | 45/60 | 70 | G1 1/2 | 1500*1000*1350 | 730 |
| RK75APM | 3.8-9.5 | 3.5-8.7 | 3.0-7.3 | 55/75 | 70 | G2 | 1700*1220*1550 | 950 |
| RK100APM | 5.1-12.8 | 4.5-11.3 | 3.7-9.2 | 75/100 | 72 | G2 | 1700*1200*1550 | 1050 |
| RK125APM | 6.2-15.5 | 5.4-13.6 | 5.0-12.5 | 90/125 | 72 | G2 | 2100*1400*1650 | 1420 |
| RK150APM | 7.8-19.6 | 7.1-17.8 | 6.2-15.5 | 110/150 | 72 | DN65 | 2500*1650*1900 | 2200 |
| RK175APM | 9.3-23.2 | 7.8-19.5 | 7.1-17.8 | 132/175 | 72 | DN65 | 2500*1650*1900 | 2400 |
| RK220APM | 11.1-27.8 | 9.2-23.0 | 8.0-20.0 | 160/220 | 72 | DN80 | 3000*1900*1950 | 3650 |
| RK250APM | 12.5-31.2 | 11.0-27.5 | 10.3-25.8 | 185/250 | 72 | DN80 | 3000*1900*1950 | 3950 |
| RK275APM | 13.6-34.0 | 12.2-30.5 | 11.2-28.0 | 200/275 | 76 | DN80 | 3000*1900*1950 | 4200 |
| RK300APM | 14.0-35.0 | 12.8-32.0 | 12.0-30.0 | 220/300 | 76 | DN100 | 3600*2200*2200 | 4600 |
| RK350APM | 16.6-41.5 | 15.2-38.0 | 14.0-34.9 | 250/350 | 76 | DN100 | 3600*2200*2200 | 5900 |
| RK375APM | 20.2-50.6 | 18.4-46.0 | 16.6-41.5 | 280/375 | 82 | DN100 | 3600*2200*2200 | 6000 |
| RK420APM | 22.2-55.9 | 20.0-50.1 | 16.8-42.0 | 315/420 | 82 | DN125 | 4600*2300*2430 | 7800 |
| RK420WPM | 22.2-55.9 | 20.0-50.1 | 16.8-42.0 | 315/420 | 82 | DN125 | 4200*2300*2430 | 7500 |
| RK475APM | 26.0-65.4 | 22.0-55.1 | 18.4-46.0 | 355/475 | 85 | DN125 | 4600*2300*2430 | 8200 |
| RK475WPM | 26.0-65.4 | 22.0-55.1 | 18.4-46.0 | 355/475 | 82 | DN125 | 4200*2300*2430 | 7900 |
Features and Benefits
✅ Ultra-High Efficiency and Energy Saving – The permanent magnet motor achieves IE4/IE5 efficiency, saving 30%-50% compared to conventional air compressors. Variable frequency drive eliminates wasted air during no-load operation.
✅ Stable Water Cooling – Compared to air cooling, water cooling systems offer superior cooling performance, making them suitable for high-temperature environments or long-term continuous operation (24/7).
✅ Low-Noise Operation – The water-cooling design reduces mechanical noise, resulting in a total noise level of ≤65 dB(A), making it suitable for environments requiring high levels of quietness.
✅ Intelligent Control – The inverter automatically adjusts the speed to match actual air demand, with pressure fluctuations of ±0.1 bar, ensuring more stable air supply.
✅ Long-Life Design – High-quality bearings and a low-wear screw element ensure long maintenance intervals and a service life of over 100,000 hours.
Application Industries
High-end manufacturing (precision machining, electronics, semiconductors)
Pharmaceutical and food (production lines requiring oil-free clean air)
Continuous production industries (chemicals, textiles, injection molding, etc. requiring 24/7 operation)
Energy-saving renovation projects (replacing traditional industrial frequency air compressors to reduce electricity costs)
FAQS
Q: How much energy does a permanent magnet variable frequency air compressor save compared to a conventional air compressor?
A: Depending on the load factor, it typically saves 30%-50%. Variable frequency control can eliminate no-load energy consumption, resulting in significant annual electricity bill savings.
Q: Which is better, water cooling or air cooling?
A: Water cooling offers more efficient heat dissipation and is suitable for high-temperature environments or high-power models; air cooling is simpler and is suitable for small to medium-power models or well-ventilated sites.
Q: Is an additional cooling tower required?
A: It depends. If you already have a circulating water system, you can connect directly. If not, you can use a small cooling tower or heat exchanger.
Q: Is maintenance complicated?
A: Water cooling systems require regular water line inspections (for scale and freeze protection), but air conditioner maintenance is simple, primarily replacing the air filter, oil filter, and coolant.
Q: Does the air conditioner support IoT remote monitoring?
A: An optional intelligent control system monitors air pressure, temperature, and energy consumption in real time, allowing for remote management via mobile phone or computer.
The single-stage permanent magnet variable frequency water-cooled screw air compressor is a highly efficient and energy-saving compressed air device. It utilizes a permanent magnet synchronous motor (PM motor) and variable frequency drive technology, coupled with a water-cooled heat dissipation system, to achieve low energy consumption, low noise, and highly stable compressed air supply. It is suitable for industrial applications with strict requirements on energy consumption, noise reduction, and continuous operation.
Product Parameters
| Intelligent PM VSD Screw Air Compressor | ||||||||
| Model | Air Delivery (m3/min) | Power (kW/hp) | Noise dB(A) | Outlet diameter | Dimensions (mm) | Weight (kg) | ||
| 8 bar | 10 bar | 13 bar | L * W * H | |||||
| RK10APM | 0.5-1.2 | 0.4-1.0 | 0.3-0.7 | 7.5/10 | 63 | G3/4 | 700*600*860 | 180 |
| RK15APM | 0.6-1.7 | 0.5-1.6 | 0.4-1.0 | 11/15 | 65 | G3/4 | 1000*750*1070 | 300 |
| RK20APM | 1.0-2.4 | 0.8-2.1 | 0.7-1.6 | 15/20 | 65 | G3/4 | 1000*750*1070 | 320 |
| RK30APM | 1.5-3.7 | 1.3-3.2 | 1.1-2.8 | 22/30 | 68 | G1 | 1350*850*1120 | 430 |
| RK40APM | 2.0-5.0 | 1.6-3.9 | 1.4-3.4 | 30/40 | 68 | G1 | 1350*800*1110 | 460 |
| RK50APM | 2.5-6.2 | 2.2-5.6 | 2.0-4.9 | 37/50 | 69 | G1 1/2 | 1500*1000*1350 | 650 |
| RK60APM | 3.0-7.3 | 2.4-6.0 | 2.3-5.9 | 45/60 | 70 | G1 1/2 | 1500*1000*1350 | 730 |
| RK75APM | 3.8-9.5 | 3.5-8.7 | 3.0-7.3 | 55/75 | 70 | G2 | 1700*1220*1550 | 950 |
| RK100APM | 5.1-12.8 | 4.5-11.3 | 3.7-9.2 | 75/100 | 72 | G2 | 1700*1200*1550 | 1050 |
| RK125APM | 6.2-15.5 | 5.4-13.6 | 5.0-12.5 | 90/125 | 72 | G2 | 2100*1400*1650 | 1420 |
| RK150APM | 7.8-19.6 | 7.1-17.8 | 6.2-15.5 | 110/150 | 72 | DN65 | 2500*1650*1900 | 2200 |
| RK175APM | 9.3-23.2 | 7.8-19.5 | 7.1-17.8 | 132/175 | 72 | DN65 | 2500*1650*1900 | 2400 |
| RK220APM | 11.1-27.8 | 9.2-23.0 | 8.0-20.0 | 160/220 | 72 | DN80 | 3000*1900*1950 | 3650 |
| RK250APM | 12.5-31.2 | 11.0-27.5 | 10.3-25.8 | 185/250 | 72 | DN80 | 3000*1900*1950 | 3950 |
| RK275APM | 13.6-34.0 | 12.2-30.5 | 11.2-28.0 | 200/275 | 76 | DN80 | 3000*1900*1950 | 4200 |
| RK300APM | 14.0-35.0 | 12.8-32.0 | 12.0-30.0 | 220/300 | 76 | DN100 | 3600*2200*2200 | 4600 |
| RK350APM | 16.6-41.5 | 15.2-38.0 | 14.0-34.9 | 250/350 | 76 | DN100 | 3600*2200*2200 | 5900 |
| RK375APM | 20.2-50.6 | 18.4-46.0 | 16.6-41.5 | 280/375 | 82 | DN100 | 3600*2200*2200 | 6000 |
| RK420APM | 22.2-55.9 | 20.0-50.1 | 16.8-42.0 | 315/420 | 82 | DN125 | 4600*2300*2430 | 7800 |
| RK420WPM | 22.2-55.9 | 20.0-50.1 | 16.8-42.0 | 315/420 | 82 | DN125 | 4200*2300*2430 | 7500 |
| RK475APM | 26.0-65.4 | 22.0-55.1 | 18.4-46.0 | 355/475 | 85 | DN125 | 4600*2300*2430 | 8200 |
| RK475WPM | 26.0-65.4 | 22.0-55.1 | 18.4-46.0 | 355/475 | 82 | DN125 | 4200*2300*2430 | 7900 |
Features and Benefits
✅ Ultra-High Efficiency and Energy Saving – The permanent magnet motor achieves IE4/IE5 efficiency, saving 30%-50% compared to conventional air compressors. Variable frequency drive eliminates wasted air during no-load operation.
✅ Stable Water Cooling – Compared to air cooling, water cooling systems offer superior cooling performance, making them suitable for high-temperature environments or long-term continuous operation (24/7).
✅ Low-Noise Operation – The water-cooling design reduces mechanical noise, resulting in a total noise level of ≤65 dB(A), making it suitable for environments requiring high levels of quietness.
✅ Intelligent Control – The inverter automatically adjusts the speed to match actual air demand, with pressure fluctuations of ±0.1 bar, ensuring more stable air supply.
✅ Long-Life Design – High-quality bearings and a low-wear screw element ensure long maintenance intervals and a service life of over 100,000 hours.
Application Industries
High-end manufacturing (precision machining, electronics, semiconductors)
Pharmaceutical and food (production lines requiring oil-free clean air)
Continuous production industries (chemicals, textiles, injection molding, etc. requiring 24/7 operation)
Energy-saving renovation projects (replacing traditional industrial frequency air compressors to reduce electricity costs)
FAQS
Q: How much energy does a permanent magnet variable frequency air compressor save compared to a conventional air compressor?
A: Depending on the load factor, it typically saves 30%-50%. Variable frequency control can eliminate no-load energy consumption, resulting in significant annual electricity bill savings.
Q: Which is better, water cooling or air cooling?
A: Water cooling offers more efficient heat dissipation and is suitable for high-temperature environments or high-power models; air cooling is simpler and is suitable for small to medium-power models or well-ventilated sites.
Q: Is an additional cooling tower required?
A: It depends. If you already have a circulating water system, you can connect directly. If not, you can use a small cooling tower or heat exchanger.
Q: Is maintenance complicated?
A: Water cooling systems require regular water line inspections (for scale and freeze protection), but air conditioner maintenance is simple, primarily replacing the air filter, oil filter, and coolant.
Q: Does the air conditioner support IoT remote monitoring?
A: An optional intelligent control system monitors air pressure, temperature, and energy consumption in real time, allowing for remote management via mobile phone or computer.
