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Screw compressor units SABflex

Small screw compressor units with swept volumes of 160–950 m3/h

SABROE SABflex screw compressors are specially designed for installations where the requirements for refrigeration capacity vary over time. These smaller-size units are optimised to ensure exceptional part load performance as well as the best possible energy efficiency.

Everything about these units is configured for use with variable-speed drive (VSD), doing away with the traditional capacity slider and ensuring skip-free performance across the entire 1,000–6,000 rpm capacity range.

The VSD drive can be mounted on the unit, or separately in an appropriate switchboard room.


SABflex units are available to provide swept volumes of 160–950 m3/h at 6000 rpm using a high-speed motor, or 160–570 m3/h at 3600 rpm using a standard motor.

You can find detailed information on our website:

Advantages Options Technical data
Advantages Benefits
Stepless, skip-free capacity control ensures that output always matches requirements Lowest possible operating costs and rapid return on investment
Consistently high performance at both full and part load Maximum part-load efficiency and low life cycle costs
Uncomplicated design with fewer moving parts and very low vibration Exceptional reliability and low maintenance costs
Supports Condition Based Service (CBS) schedules and the SABROE Block Swap Concept Optimised service/maintenance intervals, and unscheduled downtime minimised
Standardised electrical panel and drive line, factory tested prior to delivery Rapid commissioning and maximum in-service reliability
  • Thermosyphon and water-cooled oil coolers, with 3-way oiltemperature control valve
  • Demand oil pump – controlled by Unisab III systems controller.
  • Dual Super-filter TM oil filters
  • Complete economiser system
Only for use with ammonia (R717) as refrigerant.
Model Swept volume Nominal capacities in kW for R717 Unit dimensions Weight Sound
m3/h High stage
-10/+35 °C
-40/-10 °C
With economiser
-40/+35 °C
in mm
L x W x H
excluding motor/
pressure level
SABflex at 3600 rpm 570 355 112 104 3250 x 1450 x 2100 2200 83
SABflex at 6000 rpm 950 592 187 173 3250 x 1450 x 2100 2200 89

Sound pressure levels in free field over reflecting plane and one metre distance from the unit.

Production of industrial gas compressor units, compressor units, chillers, pump circulating stations, air purgers, refrigeration and freezing systems of any complexity.

Aholanmäentie 88, 49630, Hamina, Vehkajoki, Finland
+358(0) 535-77-100