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MOBILAIR M500-2 Oil-Free Portable Compressor

Oil-Free Portable Air Compressor

Up to 45.8 m³/min | MOBILAIR M500-2

A compressed air giant, the MOBILAIR M500-2 is a portable powerhouse for large projects requiring a reliable, continuous supply of quality oil-free air.

  • Flow rate: Up to 45.8 m³/min (1617 cfm)
  • Working pressure: 3.0 to 10.3 bar (149.3 psi)
  • Engine Type: Caterpillar C18 Diesel engine
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Additional Information

Setting new standards for the 50 cubic metre class, KAESER’s flagship M500-2 combines all the advantages of a two-stage oil-free compression rotary screw compressor with those of a portable unit: maximum compressed air delivery volumes and quality, coupled with unrivalled flexibility.

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 or for operating as a backup system when compressed air demand is high. Its also at home in power stations, in the automotive, food, petrochemical and pharmaceuticals industries, or for refinery applications.

The integrated SIGMA CONTROL MOBIL controller adjusts engine speed to deliver the exact volume of air needed for the specific task at hand at pressures between 3.0 and 10.3 bar. I addition, the compressed air discharge temperature can be preselected.

Design & Equipment includes:

  • 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 arrester, engine shut-off valve and closed floor pan
  • Numerous features to facilitate set-up and secure transportation (chassis with parking brake, lifting and lashing eyes, forklift pockets)

For complete product information and technical specifications, please view or download the M500-2 product brochure PDF.

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: Due to an innovative special coating which remains resistant to temperatures of up to 300 °C, the blasted and phosphate-treated rotors exhibit no measurable trace of wear, even after years of operation.

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.

What Our Customers Say

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Callum Fraser profile picture
Callum Fraser
2 September 2026
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Kerr Compressors supply a very reliable and professional service o Glenfarclas Distillery , Graeme M in sales and after service and Robert B in the service department are excellent in everything they do.
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Grant Garrick profile picture
Grant Garrick
20 August 2026
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Delt with Graeme Myron for the purchuse of a new Air compressor for one of our concrete plants, very smooth and simple proccess, look forward to dealing again in the future Grant Garrick-Pat Munro LTD
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Conan 23 profile picture
Conan 23
18 August 2026
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Massive shout out and thank you to yourselves and especially your engineer Daryll. His knowledge is like 2nd to none a very polite, professional & well mannered man. He was on our site today and took the time to explain a few things over his customer service skills aswell as problem solving skills should be rewarded. Thanks a lot Daryll 😊
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Duncan Wilson profile picture
Duncan Wilson
18 August 2026
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Daryll On time tidy work as always cheers bud
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8to8 Forres profile picture
8to8 Forres
28 May 2026
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Excellent service from Kerr Compressors. We called with an issue at 4pm and their engineer, Keith, arrived by 8am the next morning. He quickly diagnosed the problem and had everything fixed efficiently with no downtime. Fast response, professional service and great communication throughout. Highly recommend
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sue evans profile picture
sue evans
21 May 2026
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Very happy with the service. We’ve had 3 new compressors installed and everything has been excellent from start to finish. The team were professional, efficient, and the installations were completed to a high standard. Would definitely recommend.
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Buchan Main profile picture
Buchan Main
20 May 2026
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Keith on site at Aviemore WTW servicing our lime room compressor, professional job, plant left clean and tidy as usual.
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Mark Lancaster profile picture
Mark Lancaster
5 May 2026
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Robert Spark, professional and excellent work.
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Keith Stuart profile picture
Keith Stuart
4 May 2026
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Had Keith from. KERR Compressors service our shoe cleaner today. First class service Was polite and cleaned the case of Compression as well before he left looking like brand new. Would highly recommend.
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Terry Webster profile picture
Terry Webster
24 April 2026
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Yesterday we had Robert S in to service our compressor. As always, a brilliant job done and service carried out, as well as customer service! Thank you

Have a Question?
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Our experienced and knowledgeable specialist engineers provide expert product advice, meticulous service assistance, and professional technical support for all makes and types of commercial and industrial compressors and equipment.

Call us now on 0800 008 6588
Have a Question?

Get in Touch

Call us on 0800 008 6588, email us on web.enquiry@kerrcompressors.co.uk. You can also use the form below to request a quote or make a general enquiry. For product quotes, please specify which product you are interested in and your requirements. We aim to respond to all enquiries within 2 hours and always within 24 hours.

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