We use cookies in order to guarantee the best possible service. By click on  OK  you accept the use of cookies.For more information, see our Privacy Policy.

If you don´t want to be tracked, please click here.

ALMiG Products

We have the right product for every application.

As a leading compressed air technology system provider, we supply not just standard products but customised, individual solutions too.

FLEX series screw compressor – powerful mini compressors for quiet operating environments

Performance class: 5.5 – 30 kW

FLEX series

Flexible, zero-compromise compressed air system

  • Compact, powerful and quiet as a whisper
  • Speed control and direct drive
  • Integrated single-shaft solution
  • SCD technology
FLEX series logo

The speed-controlled, directly driven compressors of the FLEX series are based on cutting edge research and technology and are used wherever compressed air is to be generated by a small, compact and extremely quiet system. Because of the integrated single-shaft solution, the sound level of these small screw compressors is around 60 dB(A), allowing them to be used directly in the workplace.

The "integrated single shaft solution" from ALMiG (picture corresponds to FLEX 6 - 30 model)
Picture of FLEX series with single shaft solution

Market analyses show that on average compressors only have a utilisation rate of around 50–70 %. The maximum delivery volume is, however, only needed during peak times.
The integrated ALMiG SCD technology therefore delivers an integral drive concept with maximum cost-effectiveness for Speed Control and Direct drive. SCD technology, the benefits of which come to the fore in partial load applications, allows you to achieve an energy saving of up to 35% through:

  • Speed control
  • Constant mains pressure, stepless from 5 - 13 bar
  • Extremely good system efficiency
  • No start-up changeover power peaks
  • No expensive idle times
FLEX standard variant
FLEX standard variant
FLEX "PLUS" variant with refrigerant dryer built in underneath
FLEX "PLUS" variant with refrigerant dryer built in underneath
FLEX "PLUS" variant on top of receiver*
FLEX "PLUS" variant on top of receiver*
FLEX receiver variant
FLEX receiver variant
FLEX "O"-type variant with built-in refrigerant dryer and filtersystem underneath
FLEX "O"-type variant with built-in refrigerant dryer and filtersystem underneath
FLEX "O" variant on top of receiver*
FLEX "O" variant on top of receiver*

The screw compressors of the FLEX series are available in various variants with volume flows of between 0.53 – 3.47 m³/min thanks to their modular concept:

  • FLEX standard variant
  • FLEX receiver variant
  • FLEX "PLUS" variant with refrigeration dryer fitted underneath
  • FLEX "PLUS" variant with receiver*
  • FLEX "O" variant with refrigeration dryer and filter system for generating oil-free compressed air
  • FLEX "O" variant with receiver*
Detail view - Screw compressor FLEX

  1. Compressor

    • Newly developed rotor profile for maximum efficiency
    • Large control range, very good overall efficiency

  2. SCD motor

    • Robust drive motor, speed-controlled
    • IP 55 ISO F protection class

  3. SCD direct drive

    • Compressor shaft is also the motor's rotor
    • Power is transferred in full without a coupling element
    • Improved reliability as motor mounting not needed

  4. SCD frequency converter

    • The integrated power pack; EMC guidelines met of course

  5. Separation system

    • Outstanding compressed air quality from proven multi-stage separation

  6. Radial fan

    • Powerful
    • Efficient
    • Quiet
    • High residual thrust for connecting channels later on

  7. Unit cooler

    • Efficient cooler for minimum coolant / compressed air outlet temperatures

  8. Air Control

    • The intelligence of the compressor: it thinks, monitors, documents. Can be connected to the Internet, making all conceivable communication possible.

Potential for saving energy

FLEX series potential savings
Average total costs comparison

Thanks to the integrated single-shaft solution and SCD technology, the compressors of the FLEX series offer zero-compromise, cutting-edge technology:

  • Volume flow can be adapted exactly to meet compressed air requirements
  • No switching cycles or resultant expensive idle times
  • Energy-saving soft start without current peaks
  • Operating pressure can be freely selected between 5–13 bar in 0.1 bar steps
  • The most compact compressor imaginable – and access for service and maintenance is ideal
  • One speed-controlled FLEX can instantly make up to eight large compressors more cost-effective in an intelligent ALMiG "master-slave network"
screw compressor series FLEX technical data - 50 Hz
screw compressor series FLEX technical data - 60 Hz

* V relates to an operating overpressure of 7 bar at 50 Hz / 100 psig at 60 Hz

Heat recovery systems available

For more information about the ALMiG screw compressors of the FLEX series, please download the following brochure in your desired language.


DE - Screw compressor brochure

EN - Screw compressor brochure

* Variant not available for FLEX 16 – 30