The new standard in the 50 cubic metre class

Our flagship M500-2 combines the advantages of a two-stage dry-running oil-free rotary screw compressor with those of a mobile unit: maximum compressed air capacity and quality with unrivalled flexibility.

  • Compressed air aftercooler fitted as standard
  • Fleet Management via modem as standard
  • Optional skids version for stationary applications
  • Refinery equipment as standard – including certified spark arrestor, engine shut-off valve and closed floor pan
  • Numerous features to facilitate set-up (chassis with parking brake, lifting and lashing eyes, forklift pockets)

The MOBILAIR M500-2 excels when operating in industrial applications. This compressed air titan is ideal for providing compressed air bridging operations when maintenance or repairs are required, for operating as a backup system when compressed air demand is high, or for refinery applications. Even automated production processes, such as connection to a control centre, pose no problem. The M500-2 can easily be controlled from there and integrated into any existing compressed air system. In the event of a drop in the compressed air supply, this oil-free compression rotary screw compressor automatically jumps in.

Performance data:

  • Flow rate up to 45.8 m³/min
  • Working pressure up to 10.3 bar

Your benefits:

  • Environmentally friendly, today and for the future:
    Thanks to its state-of-the-art exhaust air treatment system, the dependable, low-emissions Caterpillar diesel engine integrated into the machine meets the stringent standards of EU Emissions Stage V.
  • Maximum, long-lasting efficiency:
    Thanks to an innovative special coating that is temperature-resistant up to 300°C, the blasted and phosphated rotors show no measurable wear even after years of use.
  • Minimal downtime:
    Thanks to its generously-sized fuel tank, the M500-2 can run throughout two consecutive shifts and, when connected to an external tank, can even run in continuous operation.

Our portable oil-free compression compressors in detail

The SIGMA CONTROL MOBIL 2 can even be operated when wearing gloves.

KAESER placed special emphasis on user-friendliness when designing the operating concept for their portable powerhouses. This focus resulted in a simple and intuitive user interface featuring a single rotary switch for start-stop operation. Pressure can be adjusted just as easily on the touchscreen display of the SIGMA CONTROL MOBIL 2 compressor controller – even when wearing unwieldy work gloves. The pV control can therefore be perfectly tailored for every application, and the easy-to-read touchscreen display provides a clear overview of all operating data. Using state-of-the-art electronic engine management, the compressor controller ensures optimised compressed air availability, fuel efficiency and exhaust air minimisation. The operating unit is protected from damage by a durable metal cover flap.

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 valve automatically shuts the unit down upon intake of combustible gases.

With the TELEMATICS 36 option, Industrie 4.0 comes to the construction site. Following approval of the data usage contract, KAESER equips every M250E / M255E – ex-works and at no extra cost – with a modem and connects it to the Telematics portal. 

The best part: KAESER pays the portal fees for 36 months. You can therefore view operating data, current messages and system location online. Through the anonymous evaluation of machine data by KAESER, you help to make MOBILAIR compressors even better.