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A 160–220kW dry oil-free rotary screw air compressor is a type of industrial air compressor that delivers 100% oil-free compressed air without injecting any liquid (oil or water) into the compression chamber .
The term "dry" means the compression chamber operates completely dry—no oil or water is used for lubrication, sealing, or cooling during the air compression process . The rotors do not contact each other; they maintain precise clearance and are driven by synchronization gears

Key Advantages
100% Oil-Free Air (Class 0 Certified) – No oil in compression chamber; meets ISO 8573-1 Class 0 standards for absolute air purity
High Energy Efficiency – Advanced rotor profiles and precision machining reduce leakage and energy loss; up to 30% more efficient than traditional designs .
Variable Speed Drive (VSD) – Automatically adjusts motor speed to match air demand, saving energy during partial loads .
Low Maintenance – No oil filters or separators to replace; fewer wearable parts reduce downtime and operating costs .
Quiet Operation – Advanced noise-dampening design ensures low decibel levels, suitable for indoor installation .
Compact Footprint – Space-saving design (up to 50% smaller than competitors) ideal for facilities with limited floor space .
Durable Construction – Stainless steel rotors with anti-corrosion coatings ensure long service life even in demanding environments .
Heat Recovery Capable – Waste heat can be recovered for space heating or process hot water, reducing overall energy costs
| 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-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 |
Target Industries
Food & Beverage – Packaging, bottling, mixing, and conveying where oil contamination cannot be tolerated .
Pharmaceutical & Medical – Tablet coating, fermentation, cleanroom air, and medical instrument operation .
Electronics & Semiconductor – Chip manufacturing, cleanroom processes, and component drying require contaminant-free air .
Chemical & Petrochemical – Instrument air, pneumatic conveying, and processes where oil could react with chemicals .
Automotive – Paint spraying (prevents "fish eyes" and surface defects) and pneumatic systems .
Textile – Air-jet looms and yarn texturing where oil stains can ruin fabric quality .
Power Generation – Instrument air and control systems in power plants .
General Manufacturing – Any application requiring reliable, high-purity compressed air

A 160–220kW dry oil-free rotary screw air compressor is a type of industrial air compressor that delivers 100% oil-free compressed air without injecting any liquid (oil or water) into the compression chamber .
The term "dry" means the compression chamber operates completely dry—no oil or water is used for lubrication, sealing, or cooling during the air compression process . The rotors do not contact each other; they maintain precise clearance and are driven by synchronization gears

Key Advantages
100% Oil-Free Air (Class 0 Certified) – No oil in compression chamber; meets ISO 8573-1 Class 0 standards for absolute air purity
High Energy Efficiency – Advanced rotor profiles and precision machining reduce leakage and energy loss; up to 30% more efficient than traditional designs .
Variable Speed Drive (VSD) – Automatically adjusts motor speed to match air demand, saving energy during partial loads .
Low Maintenance – No oil filters or separators to replace; fewer wearable parts reduce downtime and operating costs .
Quiet Operation – Advanced noise-dampening design ensures low decibel levels, suitable for indoor installation .
Compact Footprint – Space-saving design (up to 50% smaller than competitors) ideal for facilities with limited floor space .
Durable Construction – Stainless steel rotors with anti-corrosion coatings ensure long service life even in demanding environments .
Heat Recovery Capable – Waste heat can be recovered for space heating or process hot water, reducing overall energy costs
| 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-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 |
Target Industries
Food & Beverage – Packaging, bottling, mixing, and conveying where oil contamination cannot be tolerated .
Pharmaceutical & Medical – Tablet coating, fermentation, cleanroom air, and medical instrument operation .
Electronics & Semiconductor – Chip manufacturing, cleanroom processes, and component drying require contaminant-free air .
Chemical & Petrochemical – Instrument air, pneumatic conveying, and processes where oil could react with chemicals .
Automotive – Paint spraying (prevents "fish eyes" and surface defects) and pneumatic systems .
Textile – Air-jet looms and yarn texturing where oil stains can ruin fabric quality .
Power Generation – Instrument air and control systems in power plants .
General Manufacturing – Any application requiring reliable, high-purity compressed air
