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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.
Key Selling Points (Advantages)
100% Oil-Free Air
Guarantees absolutely no oil carry-over into the air system – ideal for critical applications (medical, food, pharmaceutical, electronics).
Zero Contamination Risk
Eliminates oil mist and filters – prevents product spoilage, catalyst poisoning, and equipment fouling.
Low Maintenance & High Reliability
No oil changes, separators, or disposal costs. Fewer wear parts mean lower downtime and long-term savings.
Energy Efficient
Modern dry screw designs with variable speed drives optimize power consumption based on demand.
Environmentally Friendly
No condensate oil disposal required – reduces environmental impact and compliance costs.
Compliant with Strict Standards
Meets ISO 8573-1 Class 0 (the highest purity class) – surpasses food-grade and pharmaceutical requirements.
| 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-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 |
Typical Application Industries
Below are its core application areas and typical scenarios:
Food & Beverage Industry
This is one of the most dominant applications for dry-type oil-free screw air compressors. They are widely used in processes such as bottling, blow molding, fermentation, material conveying, and packaging. Oil-free air prevents product contamination, ensures food safety, and extends shelf life.
Electronics & Precision Manufacturing
In the production of semiconductors, LCD panels, and electronic components, even minute oil contamination can lead to product rejection. Oil-free air guarantees high yield rates during precision machining and cleaning processes.
Petrochemical Industry
When conveying flammable or explosive gases or for instrument control, oil-free air eliminates safety risks caused by the presence of oil, ensuring absolute process safety throughout the operation.
Wastewater Aeration Treatment
In water treatment processes, oil-free air provides oxygen to microorganisms through aerators, preventing oil film from clogging the aeration heads and ensuring high treatment efficiency.
Laboratories & Scientific Research
It supplies oil-free, dry, and pure compressed air for analytical instruments and pneumatic control systems, ensuring the accuracy and reliability of experimental data.
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.
Key Selling Points (Advantages)
100% Oil-Free Air
Guarantees absolutely no oil carry-over into the air system – ideal for critical applications (medical, food, pharmaceutical, electronics).
Zero Contamination Risk
Eliminates oil mist and filters – prevents product spoilage, catalyst poisoning, and equipment fouling.
Low Maintenance & High Reliability
No oil changes, separators, or disposal costs. Fewer wear parts mean lower downtime and long-term savings.
Energy Efficient
Modern dry screw designs with variable speed drives optimize power consumption based on demand.
Environmentally Friendly
No condensate oil disposal required – reduces environmental impact and compliance costs.
Compliant with Strict Standards
Meets ISO 8573-1 Class 0 (the highest purity class) – surpasses food-grade and pharmaceutical requirements.
| 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-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 |
Typical Application Industries
Below are its core application areas and typical scenarios:
Food & Beverage Industry
This is one of the most dominant applications for dry-type oil-free screw air compressors. They are widely used in processes such as bottling, blow molding, fermentation, material conveying, and packaging. Oil-free air prevents product contamination, ensures food safety, and extends shelf life.
Electronics & Precision Manufacturing
In the production of semiconductors, LCD panels, and electronic components, even minute oil contamination can lead to product rejection. Oil-free air guarantees high yield rates during precision machining and cleaning processes.
Petrochemical Industry
When conveying flammable or explosive gases or for instrument control, oil-free air eliminates safety risks caused by the presence of oil, ensuring absolute process safety throughout the operation.
Wastewater Aeration Treatment
In water treatment processes, oil-free air provides oxygen to microorganisms through aerators, preventing oil film from clogging the aeration heads and ensuring high treatment efficiency.
Laboratories & Scientific Research
It supplies oil-free, dry, and pure compressed air for analytical instruments and pneumatic control systems, ensuring the accuracy and reliability of experimental data.
