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This type of compressor utilizes two screw main units (or two pairs of screws within one main unit) operating in series. Air is compressed in the first stage, cooled, and then efficiently compressed in the second stage, ultimately reaching the desired pressure. "Constant speed frequency" means the drive motor operates at a fixed speed, not stepless speed regulation.
Product Parameters
| Two stage fixed speed air compressor | |||||||||
| Model | Air Delivery(m³/min) | Power (KW/hp) | Noise dB(A) | Outlet diameter | Dimensions(mm) | Weight (kg) | |||
| 7 bar | 8 bar | 10 bar | 13 bar | L*W*H | |||||
| RK30AII | 4.5 | 4.2 | 3.5 | 2.7 | 22/30 | 68 | G11/2 | 1350*850*1110 | 600 |
| RK40AII | 6.0 | 5.9 | 4.7 | 4.0 | 30/40 | 68 | G112 | 1200*1000*1350 | 700 |
Key Advantages and Features
High energy efficiency and power saving
Core advantages. Two-stage compression distributes the compression ratio, reducing internal leakage and load, resulting in approximately 10%-15% higher efficiency than single-stage compression, particularly under medium- and high-pressure conditions.
Large air output
At the same power output, it offers higher volumetric efficiency, providing more compressed air.
High reliability
Each stage of compression experiences lower loads and temperatures, resulting in less stress on bearings and rotors, reduced wear, and longer life.
Compact structure
The two-stage compression unit is typically integrated into a single unit, occupying a footprint comparable to a single-stage unit.
Application Industries
Primarily used in energy-sensitive industries with high and stable gas demand, such as:
• Large-scale manufacturing (such as automotive, metallurgy, and chemical)
• Mining
• Textile industry
• Long-term continuous operation (24/7)
This type of compressor utilizes two screw main units (or two pairs of screws within one main unit) operating in series. Air is compressed in the first stage, cooled, and then efficiently compressed in the second stage, ultimately reaching the desired pressure. "Constant speed frequency" means the drive motor operates at a fixed speed, not stepless speed regulation.
Product Parameters
| Two stage fixed speed air compressor | |||||||||
| Model | Air Delivery(m³/min) | Power (KW/hp) | Noise dB(A) | Outlet diameter | Dimensions(mm) | Weight (kg) | |||
| 7 bar | 8 bar | 10 bar | 13 bar | L*W*H | |||||
| RK30AII | 4.5 | 4.2 | 3.5 | 2.7 | 22/30 | 68 | G11/2 | 1350*850*1110 | 600 |
| RK40AII | 6.0 | 5.9 | 4.7 | 4.0 | 30/40 | 68 | G112 | 1200*1000*1350 | 700 |
Key Advantages and Features
High energy efficiency and power saving
Core advantages. Two-stage compression distributes the compression ratio, reducing internal leakage and load, resulting in approximately 10%-15% higher efficiency than single-stage compression, particularly under medium- and high-pressure conditions.
Large air output
At the same power output, it offers higher volumetric efficiency, providing more compressed air.
High reliability
Each stage of compression experiences lower loads and temperatures, resulting in less stress on bearings and rotors, reduced wear, and longer life.
Compact structure
The two-stage compression unit is typically integrated into a single unit, occupying a footprint comparable to a single-stage unit.
Application Industries
Primarily used in energy-sensitive industries with high and stable gas demand, such as:
• Large-scale manufacturing (such as automotive, metallurgy, and chemical)
• Mining
• Textile industry
• Long-term continuous operation (24/7)
