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A dry-type oil-free screw air compressor utilizes a screw rotor structure that requires no lubrication during the compression process, resulting in absolutely oil-free output air.
Core Features
1. 100% Oil-Free Compression
Using screw rotors with special coatings (such as PTFE) or corrosion-resistant materials, the compression chamber is lubricated, ensuring oil-free outlet air (compliant with ISO 8573-1 Class 0 standards).
2. High Efficiency and Energy Saving
Using permanent magnet variable frequency (PMV) or two-stage compression technology, it achieves 30%-40% energy savings compared to piston compressors.
No lubricant friction loss results in higher mechanical efficiency.
3. Low Maintenance Cost
The oil-free system eliminates consumables such as oil filters and oil separators, requiring only regular replacement of the air filter and coolant.
The airend's lifespan can exceed 100,000 hours (compared to approximately 60,000 hours for conventional oil-injected screws).
4. Low Noise and Low Temperature Rise
Noise levels are ≤70dB(A), making it suitable for environments requiring high quietness (such as laboratories and hospitals).
Employing air or water cooling systems allows for controlled temperature rise, preventing material deformation caused by high temperatures.
5. Intelligent Control
Integrated PLC control system monitors pressure, temperature, and flow in real time, automatically adjusting load.
| Dry Oil-free Screw Air Compressor RDO Series | ||||||||||
| Model | Air Delivery (m3/min) | Power (kW) | Noise dB(A) | Outlet diameter | Dimension (mm) | Weight (Kg) | ||||
| 7bar | 8bar | 10bar | Air-cooled | Water-cooled | Air-cooled | Water-cooled | ||||
| RDO-45A/W | 4.5-7.8 | 4.0-6.8 | 3.7-6.4 | 45 | 69±3 | DN50 | 2200*1400*2000 | 2200*1500*1720 | 2650 | 2700 |
| RDO-55A/W | 5.7-9.8 | 5.2-9.0 | 4.4-7.8 | 55 | 69±3 | DN50 | 2200*1400*2000 | 2200*1500*1720 | 2850 | 2900 |
| RDO-75A/W | 7.6-13.0 | 7.2-12.2 | 6.6-11.2 | 75 | 70±3 | DN50 | 2200*1400*2000 | 2200*1500*1720 | 2950 | 2900 |
| RDO-90A/W | 9.6-16.0 | 8.1-13.8 | 7.6-13.1 | 90 | 71±3 | DN50 | 2200*1400*2000 | 2200*1500*1720 | 3000 | 2950 |
| RDO-110A/W | 12.1-20.6 | 11.6-19.5 | 11.1-18.8 | 110 | 71±3 | DN65 | 3000*1990*2180 | 2800*1900*1990 | 3500 | 3550 |
| RDO-132A/W | 14.7-24.8 | 13.6-23.0 | 11.5-19.5 | 132 | 73±3 | DN65 | 3000*1990*2180 | 2800*1900*1990 | 3550 | 3600 |
| RDO-160A/W | 16.9-28.5 | 15.6-26.3 | 14.1-23.8 | 160 | 73±3 | DN65 | 3000*1990*2180 | 2800*1900*1990 | 3650 | 3750 |
| RDO-185A/W | 19.5-32.8 | 17.1-28.9 | 16.3-27.5 | 185 | 74±3 | DN65 | 3000*1990*2180 | 2800*1900*1990 | 4100 | 4200 |
| RDO-200A/W | 21.8-36.8 | 20.4-34.6 | 18.1-30.6 | 200 | 74±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5100 | 4500 |
| RDO-220A/W | 24.9-41.5 | 22.4-37.3 | 19.8-33.0 | 220 | 74±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5600 | 5000 |
| RDO-250A/W | 27.3-46.0 | 25.3-42.8 | 22.7-38.2 | 250 | 74±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5700 | 5200 |
| RDO-280A/W | 31.6-48.6 | 30.9-47.5 | 29.3-45.0 | 280 | 76±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5800 | 5300 |
| RDO-315A/W | 34.1-52.5 | 32.9-50.6 | 31.5-48.5 | 315 | 77±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 6000 | 5400 |
Typical Application Industries
1. Food & Beverage: Packaging aeration, bottle purging, and fermentation oxygen supply.
2. Pharmaceutical & Healthcare: Pharmaceutical pneumatic conveying, ventilator air supply, and aseptic packaging.
3. Electronics & Semiconductors: Chip purging, PCB cleaning, and laser cutting shielding gas.
4. Chemical & Energy: Catalyst delivery, natural gas compression, and PET bottle blowing.
5. Other High-End Manufacturing: Automotive spray painting (oil-free air to prevent paint defects).
Textiles (to prevent lubricant contamination of fibers).
Laboratories (air supply for precision instruments).
A dry-type oil-free screw air compressor utilizes a screw rotor structure that requires no lubrication during the compression process, resulting in absolutely oil-free output air.
Core Features
1. 100% Oil-Free Compression
Using screw rotors with special coatings (such as PTFE) or corrosion-resistant materials, the compression chamber is lubricated, ensuring oil-free outlet air (compliant with ISO 8573-1 Class 0 standards).
2. High Efficiency and Energy Saving
Using permanent magnet variable frequency (PMV) or two-stage compression technology, it achieves 30%-40% energy savings compared to piston compressors.
No lubricant friction loss results in higher mechanical efficiency.
3. Low Maintenance Cost
The oil-free system eliminates consumables such as oil filters and oil separators, requiring only regular replacement of the air filter and coolant.
The airend's lifespan can exceed 100,000 hours (compared to approximately 60,000 hours for conventional oil-injected screws).
4. Low Noise and Low Temperature Rise
Noise levels are ≤70dB(A), making it suitable for environments requiring high quietness (such as laboratories and hospitals).
Employing air or water cooling systems allows for controlled temperature rise, preventing material deformation caused by high temperatures.
5. Intelligent Control
Integrated PLC control system monitors pressure, temperature, and flow in real time, automatically adjusting load.
| Dry Oil-free Screw Air Compressor RDO Series | ||||||||||
| Model | Air Delivery (m3/min) | Power (kW) | Noise dB(A) | Outlet diameter | Dimension (mm) | Weight (Kg) | ||||
| 7bar | 8bar | 10bar | Air-cooled | Water-cooled | Air-cooled | Water-cooled | ||||
| RDO-45A/W | 4.5-7.8 | 4.0-6.8 | 3.7-6.4 | 45 | 69±3 | DN50 | 2200*1400*2000 | 2200*1500*1720 | 2650 | 2700 |
| RDO-55A/W | 5.7-9.8 | 5.2-9.0 | 4.4-7.8 | 55 | 69±3 | DN50 | 2200*1400*2000 | 2200*1500*1720 | 2850 | 2900 |
| RDO-75A/W | 7.6-13.0 | 7.2-12.2 | 6.6-11.2 | 75 | 70±3 | DN50 | 2200*1400*2000 | 2200*1500*1720 | 2950 | 2900 |
| RDO-90A/W | 9.6-16.0 | 8.1-13.8 | 7.6-13.1 | 90 | 71±3 | DN50 | 2200*1400*2000 | 2200*1500*1720 | 3000 | 2950 |
| RDO-110A/W | 12.1-20.6 | 11.6-19.5 | 11.1-18.8 | 110 | 71±3 | DN65 | 3000*1990*2180 | 2800*1900*1990 | 3500 | 3550 |
| RDO-132A/W | 14.7-24.8 | 13.6-23.0 | 11.5-19.5 | 132 | 73±3 | DN65 | 3000*1990*2180 | 2800*1900*1990 | 3550 | 3600 |
| RDO-160A/W | 16.9-28.5 | 15.6-26.3 | 14.1-23.8 | 160 | 73±3 | DN65 | 3000*1990*2180 | 2800*1900*1990 | 3650 | 3750 |
| RDO-185A/W | 19.5-32.8 | 17.1-28.9 | 16.3-27.5 | 185 | 74±3 | DN65 | 3000*1990*2180 | 2800*1900*1990 | 4100 | 4200 |
| RDO-200A/W | 21.8-36.8 | 20.4-34.6 | 18.1-30.6 | 200 | 74±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5100 | 4500 |
| RDO-220A/W | 24.9-41.5 | 22.4-37.3 | 19.8-33.0 | 220 | 74±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5600 | 5000 |
| RDO-250A/W | 27.3-46.0 | 25.3-42.8 | 22.7-38.2 | 250 | 74±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5700 | 5200 |
| RDO-280A/W | 31.6-48.6 | 30.9-47.5 | 29.3-45.0 | 280 | 76±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 5800 | 5300 |
| RDO-315A/W | 34.1-52.5 | 32.9-50.6 | 31.5-48.5 | 315 | 77±3 | DN100 | 4500*2000*2100 | 3100*2100*2065 | 6000 | 5400 |
Typical Application Industries
1. Food & Beverage: Packaging aeration, bottle purging, and fermentation oxygen supply.
2. Pharmaceutical & Healthcare: Pharmaceutical pneumatic conveying, ventilator air supply, and aseptic packaging.
3. Electronics & Semiconductors: Chip purging, PCB cleaning, and laser cutting shielding gas.
4. Chemical & Energy: Catalyst delivery, natural gas compression, and PET bottle blowing.
5. Other High-End Manufacturing: Automotive spray painting (oil-free air to prevent paint defects).
Textiles (to prevent lubricant contamination of fibers).
Laboratories (air supply for precision instruments).
