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A screw blower is a positive displacement compressor that utilizes two intermeshing, helically-shaped rotors to compress air. It represents a significant advancement in efficiency and reliability over traditional lobe-type rotary blowers, especially in applications requiring higher pressures or continuous operation.
Technical parameters
| Model | Power （kW） | Pressure（bar/kPa） | Volume flow（m³/min） | Pipe Diameter | Weight（kg） | Dimension (mm) |
| RK75BPM | 55kW | 0.4/40 | 55.0 | DN200 | 1800 | 2700×1400×1900 |
| 0.6/60 | 48.0 | |||||
| 0.7/70 | 44.0 | |||||
| 0.8/80 | 41.5 | |||||
| 1.0/100 | 35.0 | 1750 | ||||
| 1.2/120 | 31.0 | |||||
| 1.5/150 | 21.0 | DN150 | 1350 | 2200×1250×1900 | ||
| 1.8/180 | 16.5 | |||||
| 2.0/200 | 14.5 | |||||
| RK100BPM | 75kW | 0.4/40 | 78.0 | DN250 | 2200 | 3100×1500×2150 |
| 0.6/60 | 68.0 | |||||
| 0.7/70 | 61.0 | |||||
| 0.8/80 | 55.0 | DN200 | 1800 | 2700×1400×1900 | ||
| 0.9/90 | 51.0 | |||||
| 1.0/100 | 47.0 | |||||
| 1.2/120 | 42.5 | |||||
| 1.5/150 | 34.0 | 1750 | ||||
| 1.8/180 | 27.0 | |||||
| 2.0/200 | 24.5 | DN150 | 1400 | 2200×1250×1900 |
Oil-Free Screw Blower (55–75 kW) Advantages
1. High Energy Efficiency – Up to 35% Energy Savings
Delivers industry-leading specific power (kW/m³/min) with advanced screw technology, significantly reducing operating costs compared to traditional lobe blowers.
2. 100% Oil-Free Operation
Class 0 certified oil-free air ensures zero contamination, making it ideal for sensitive applications such as food processing, pharmaceuticals, and electronics manufacturing.
3. Wide Flow & Pressure Range
Capable of handling flow rates from 10 to 70 m³/min and pressures up to 1.2 bar(g), providing flexible solutions for diverse industrial processes.
4. Compact & Quiet Design
Integrated design with built-in silencer and vibration-damping structure allows for easy installation near work areas with noise levels as low as 75–80 dB(A).
5. Intelligent Control with VFD Option
Equipped with PLC-based controller and optional variable frequency drive (VFD) for real-time load matching, ensuring optimal energy use and stable pressure output.
6. Low Maintenance & High Reliability
Oil-free screw elements eliminate the need for oil changes, oil filters, and condensate treatment. Minimal moving parts and robust construction ensure long service intervals and maximum uptime.
7. Ideal for 24/7 Continuous Duty
Built with heavy-duty bearings and durable materials to withstand demanding industrial environments and continuous operation without performance degradation.
Industrial Applications
Wastewater Treatment: For aeration tanks to promote bacterial growth that breaks down organic matter.
Aquaculture: Providing oxygenation in fish and shrimp farms to maintain healthy dissolved oxygen levels.
Food & Beverage: Used in pneumatic conveying (transporting powders, grains), fermentation, and packaging. Oil-free models are essential here.
Pharmaceutical & Chemical: For processes requiring contamination-free air (oil-free), such as fermentation, fluid bed dryers, and reactor agitation.
Cement & Plastics: Pneumatic conveying of raw materials like cement, sand, and plastic pellets.
Power Generation: In Flue Gas Desulfurization (FGD) aeration and other process air applications.
Textile: Air jet looms and other manufacturing processes.
A screw blower is a positive displacement compressor that utilizes two intermeshing, helically-shaped rotors to compress air. It represents a significant advancement in efficiency and reliability over traditional lobe-type rotary blowers, especially in applications requiring higher pressures or continuous operation.
Technical parameters
| Model | Power （kW） | Pressure（bar/kPa） | Volume flow（m³/min） | Pipe Diameter | Weight（kg） | Dimension (mm) |
| RK75BPM | 55kW | 0.4/40 | 55.0 | DN200 | 1800 | 2700×1400×1900 |
| 0.6/60 | 48.0 | |||||
| 0.7/70 | 44.0 | |||||
| 0.8/80 | 41.5 | |||||
| 1.0/100 | 35.0 | 1750 | ||||
| 1.2/120 | 31.0 | |||||
| 1.5/150 | 21.0 | DN150 | 1350 | 2200×1250×1900 | ||
| 1.8/180 | 16.5 | |||||
| 2.0/200 | 14.5 | |||||
| RK100BPM | 75kW | 0.4/40 | 78.0 | DN250 | 2200 | 3100×1500×2150 |
| 0.6/60 | 68.0 | |||||
| 0.7/70 | 61.0 | |||||
| 0.8/80 | 55.0 | DN200 | 1800 | 2700×1400×1900 | ||
| 0.9/90 | 51.0 | |||||
| 1.0/100 | 47.0 | |||||
| 1.2/120 | 42.5 | |||||
| 1.5/150 | 34.0 | 1750 | ||||
| 1.8/180 | 27.0 | |||||
| 2.0/200 | 24.5 | DN150 | 1400 | 2200×1250×1900 |
Oil-Free Screw Blower (55–75 kW) Advantages
1. High Energy Efficiency – Up to 35% Energy Savings
Delivers industry-leading specific power (kW/m³/min) with advanced screw technology, significantly reducing operating costs compared to traditional lobe blowers.
2. 100% Oil-Free Operation
Class 0 certified oil-free air ensures zero contamination, making it ideal for sensitive applications such as food processing, pharmaceuticals, and electronics manufacturing.
3. Wide Flow & Pressure Range
Capable of handling flow rates from 10 to 70 m³/min and pressures up to 1.2 bar(g), providing flexible solutions for diverse industrial processes.
4. Compact & Quiet Design
Integrated design with built-in silencer and vibration-damping structure allows for easy installation near work areas with noise levels as low as 75–80 dB(A).
5. Intelligent Control with VFD Option
Equipped with PLC-based controller and optional variable frequency drive (VFD) for real-time load matching, ensuring optimal energy use and stable pressure output.
6. Low Maintenance & High Reliability
Oil-free screw elements eliminate the need for oil changes, oil filters, and condensate treatment. Minimal moving parts and robust construction ensure long service intervals and maximum uptime.
7. Ideal for 24/7 Continuous Duty
Built with heavy-duty bearings and durable materials to withstand demanding industrial environments and continuous operation without performance degradation.
Industrial Applications
Wastewater Treatment: For aeration tanks to promote bacterial growth that breaks down organic matter.
Aquaculture: Providing oxygenation in fish and shrimp farms to maintain healthy dissolved oxygen levels.
Food & Beverage: Used in pneumatic conveying (transporting powders, grains), fermentation, and packaging. Oil-free models are essential here.
Pharmaceutical & Chemical: For processes requiring contamination-free air (oil-free), such as fermentation, fluid bed dryers, and reactor agitation.
Cement & Plastics: Pneumatic conveying of raw materials like cement, sand, and plastic pellets.
Power Generation: In Flue Gas Desulfurization (FGD) aeration and other process air applications.
Textile: Air jet looms and other manufacturing processes.
