Description
Senator CM8 Variable Speed Screw Compressor 7.5kW 10Bar 39cfm – 450L Full Featured
Compact, Energy-Efficient Variable Speed Compressed Air
The Senator CM8 Variable Speed Screw Compressor combines a high-efficiency permanent magnet motor, variable speed control and direct-drive technology to provide an efficient and dependable compressed air solution.
As the smallest model in the Senator CM Series, the CM8 is particularly well suited to workshops, manufacturing facilities and industrial applications that require professional compressed air performance without the capacity or footprint of a larger compressor.
Senator CM8 Compressor Features
- Permanent Magnet Variable Speed Motor: The high-efficiency 7.5 kW (10 hp) permanent magnet motor works with the variable speed drive to adjust compressor output according to compressed air demand. Rather than continuously operating at maximum capacity, the CM8 can increase or decrease output as air requirements change, helping reduce unnecessary energy consumption during periods of lower demand.
- Direct-Drive Technology: The motor directly drives the compressor air end, eliminating the conventional belt-drive arrangement. This reduces mechanical complexity, transmission losses and ongoing maintenance requirements.
- Selectable 8 or 10 Bar Pressure: The Senator CM8 can operate at either 8 bar (116 psi) or 10 bar (145 psi). These are not separate compressor models. Operating pressure is electronically configured through the compressor controller and variable speed drive without changing pulleys or making mechanical modifications.
- Integrated 4-in-1 Design: The CM8 combines the major components required for a complete compressed air solution into one compact package, simplifying installation and reducing floorspace requirements.
- 450 Litre Air Receiver: An integrated 450 litre air receiver provides compressed air storage while maintaining the compact footprint of the complete CM8 system.
- Quiet Operation: With an operating noise level of 69 dB(A) at one metre, the CM8 is designed to provide industrial compressed air performance while helping maintain a more comfortable working environment.
Senator CM8 Compressor Specifications
Product Code: SE CM8-8
Compressor Type: Variable speed rotary screw
Motor Power: 7.5 kW (10 hp)
Free Air Delivery: 0.44–1.10 m³/min (15–39 cfm)
Working Pressure: 8 or 10 bar (116 or 145 psi)
Motor Type: Permanent magnet variable speed
Drive: Direct drive
Tank Volume: 450 litres
Noise Level: 69 dB(A) @ 1 metre
Dimensions (W × D × H): 1,670 × 670 × 1,670 mm
Weight: 407 kg
Variable Speed Performance
Compressed air demand rarely remains constant throughout the working day. Pneumatic tools, machinery and production processes are switched on and off, causing air requirements to continually change.
The CM8’s variable speed system responds by increasing or decreasing compressor output according to demand rather than continuously operating at maximum capacity.
For businesses with fluctuating compressed air requirements, this provides a more efficient way to generate compressed air while maintaining the pressure required by equipment and processes.
Is The Senator CM8 Right For Your Business?
The CM8 is particularly well suited to smaller workshops, production environments and commercial or industrial facilities that require a dependable compressed air supply without the capacity or physical footprint of a larger industrial compressor.
Its variable speed operation makes it particularly suitable where compressed air demand changes throughout the working day.
For applications regularly approaching the upper end of the CM8’s 1.10 m³/min (39 cfm) capacity, the larger Senator CM11 may provide additional capacity for peak demand and future growth.
Find The Right Senator Air Compressor
Correct compressor sizing is important for performance, energy efficiency and long-term reliability. Required airflow, working pressure, peak demand, operating hours and future compressed air requirements should all be considered when selecting a rotary screw air compressor.
Talk to our team about your equipment and compressed air requirements and we can help determine whether the Senator CM8 Variable Speed Screw Compressor is the right solution for your application.









