Fixed speed rotary screw compressors from 7.5 kW to 110 kW for steady, continuous air supply. Larger…
Solair
Rotary Screw
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Solair Variable Speed Drive Screw Compressors (PR Series)
Power
7.5 - 110 kW
Pressure
7 - 10 bar
Flow Rate
0.45 - 19.80 m³/min
Variable speed drive screw compressors adjust motor speed to real-time air demand, which suits operations with fluctuating air use. Solair states that this can reduce power consumption by up to 35% compared with fixed speed models.
A soft start limits mechanical stress and peak current, and the stable pressure output protects downstream equipment. Models from 7.5 kW to 110 kW are listed below. Larger models up to 315 kW are available on request.
| Model | Working pressure (bar) | Free air delivery (m³/min) | Motor (kW / HP) |
|---|---|---|---|
| PR-7.5 | 7 - 10 | 0.45 - 1.20 | 7.5 / 10 |
| PR-11 | 7 - 10 | 0.55 - 1.80 | 11 / 15 |
| PR-15 | 7 - 10 | 0.80 - 2.30 | 15 / 20 |
| PR-22 | 7 - 10 | 1.20 - 3.60 | 22 / 30 |
| PR-30 | 7 - 10 | 1.50 - 5.30 | 30 / 40 |
| PR-37 | 7 - 10 | 1.80 - 6.20 | 37 / 50 |
| PR-45 | 7 - 10 | 2.50 - 7.80 | 45 / 60 |
| PR-55 | 7 - 10 | 3.50 - 9.20 | 55 / 75 |
| PR-75 | 7 - 10 | 4.20 - 12.60 | 75 / 100 |
| PR-90 | 7 - 10 | 5.50 - 15.00 | 90 / 120 |
| PR-110 | 7 - 10 | 6.50 - 19.80 | 110 / 150 |
Key Features
Dynamic load matching to air demand
Energy saving of up to 35% against fixed speed, per Solair
Soft start
Stable pressure output
Quieter operation at lower speeds
Works with Solair microcomputer control and WiFi monitoring
5-year mechanical warranty on major mechanical components, as stated by Solair
Technical Specifications
| Motor Power | 7.5 kW to 110 kW (larger on request) |
|---|---|
| Working Pressure | 7 to 10 bar |
| Free Air Delivery | 0.45 to 19.80 m³/min |
Typical Applications
Manufacturing
Industrial plants
Variable-demand air systems
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