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SX4 (3kW) HPC Belt Drive Rotary Screw Compressors

Code: SX4

HPC SX4 (3kW)
At the heart of each HPC SX series rotary screw air compressor is the specially designed airend with flow-optimised Sigma Profile rotors delivering more compressed air for less energy consumption. The efficiency of the airend is further complimented by a highly effective cooling system with dual-flow fan. This innovative design not only enhances cooling performance, but also minimises sound emissions. Furthermore, separate intake of motor-cooling air and air for compression from the ambient surroundings ensures optimum motor cooling and increased compression performance.

The internal “Sigma Control Basic” controller provides automatic system monitoring and precisely adjusts compressor performance to match actual compressed air demand.

These units are also exceptionally service-friendly: The housing cover on the left of each unit is easy to remove and allows excellent component accessibility, whilst the new maintenance-free drive belt between the motor and airend eliminates the need for intermittent belt tensioning and adjustment. This both guarantees optimum power transmission and reduces service costs.


Fully automatic
Super sound-proofed
All panels powder-coated
For ambient temperatures up to +45 °C
Easy access to all service points thanks to removable left cover
Premium Efficiency IE2
Premium quality German-made motor
SIGMA Profile rotors require approximately 10 to 20 percent less energy than conventional rotors of the same air delivery capacity.
Dual flow fan and separate air flow channels for cooling of the motor, the fluid/compressed air cooler and the control cabinet
Fluid and air flow: 'Honeycomb' air intake filter, pneumatic inlet and venting valves, cooling fluid separator tank with triple separation system
Pressure relief valve
Minimum pressure check valve
Thermostatic valve and fluid filter in coolant circuit
Fluid / compressed air combination cooler
Control cabinet to IP 54
Switching cabinet ventilation
Automatic star-delta starter
Overload relays
Control transformer
"Traffic-light" LED indicators show operational status at a glance
Plain text display
30 selectable languages
Soft-touch keys with icons
Fully automated monitoring and control
Selection of Dual, Quadro, Vario and Continuous control as standard
Interfaces: Ethernet
Additional optional communications modules for: Profibus DP, Modbus, Profinet and DeviceNet
SD-card slot for data-logging and updates
RFID reader
Web server

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