Industrial dry-runners up to 45.8 m³/min (1600 cfm)

The new standard for the 50 cubic metre class

Our flagship M500-2 combines all the advantages of a two-stage, dry-running rotary screw compressor with those of mobile units: Maximum compressed air quantity and quality with maximum flexibility.

  • Compressed air aftercooler fitted as standard
  • Fleet Management via GPS as standard
  • Refinery equipment as standard – including certified spark arrestor, motor shut-off valve and sealed floor pan.
  • Many features to facilitate setup (chassis with parking brake, crane and rigging eyelets, forklift pockets).

For industrial equipment with high compressed air requirements the M500-2 ensures continuity of compressed air supply even during maintenance or renovation work. Other areas of application include refineries – e.g. for pipeline flushing.
A perfect team player, it easily integrates into existing stations.

Your advantages

  • Environmentally-friendly today and for the future:
    The reliable and low-emissions integrated Caterpillar diesel engine complies with Stage IIIB European emissions standards thanks to its integrated soot particle filter.
  • Maximum long-term efficiency:
    Thanks to an innovative coating that remains immune to temperatures up to 300 °C, the blasted and phosphate-treated rotors show no measurable wear even after years of use.
  • Minimal standstill times:
    Thanks to its generously sized fuel tank, the M500-2 can run for two entire sequential shifts and can even run continuously when connected to an external tank.

Profitable thanks to low life-cycle costs
Life-cycle costs

Our comprehensive approach to optimal profitability: Optimal efficiency, easiest operation, service-friendliness and a global service and consulting network with fast response times.


Our industrial dry-running compressors in detail


The compressor controller of the future


The SIGMA CONTROL MOBILE controller uses electronic motor management to optimise compressed air availability and fuel efficiency. It is shock and vibration-resistant and features IP 65 enclosure protection.
In addition to performance monitoring, it also provides precise system diagnostics.

User-friendly operation saves time

The highly intuitive user operation means that only three buttons are needed to operate the entire system.
If necessary, the compressor can shut itself down using the automatic monitoring system

Precise settings

The system pressure can be set with precision of 0.1 bar directly on the SIGMA CONTROL MOBILE display using arrow keys, as can the compressed air discharge temperature; this enables precise adjustment to downstream compressed air treatment components.

Refinery equipment as standard

Sealed floor pan

The sealed floor pan for hazard areas immediately catches liquids to prevent any direct soiling of the floor or ground.
The drainage holes are sealed with screwed sealing plugs.

Spark arrestor

A certified spark arrestor is factory installed for use in areas at risk of explosion.

Shut-off valve

The engine shut-off value automatically shuts the unit down upon intake of combustible gases.

Optional: MOBILAIR fleet management

Real-time data via GPS

MOBILAIR fleet management

An optional GPS/GSM modem discretely integrated into the unit provides the user with online information regarding the technical status of the equipment. Should the user need to be alerted to an issue, the system actively reports it with a diagnostics check.
In addition to current operating hours and position-fixing, the system also helps by providing valuable data for compressor load evaluation and maintenance planning.