With the world-renowned SIGMA PROFILE. Flow rate 1.90 to 3.15 m³/min (67 to 110 cfm)
Compact, powerful, adaptable
KAESER’s new MOBILAR portable compressors provide more than just impressive compressed air flow rates: various equipment options turn these efficient compressors into multi-talented compressed air powerhouses.
Pile on the pressure
As with every KAESER rotary screw compressor, a premium quality airend featuring world-renowned SIGMA PROFILErotors lies at the heart of all M 27 and M 31 models and delivers more compressed air for less energy.
The standard working pressure for these machines is 7 bar; 10, 12 and 14 bar versions are also available.
With the optionally available 6.5 kVA generator, they be- come construction site powerhouses providing a dependable supply of compressed air and / or electricity.
Compressed Air Quality
Aftercoolers and condensate separators are available for applications requiring cool, dry compressed air. The M 27 and M 31 compressors without air treatment systems feature KAESER’s patented Anti-Frost Control as standard.
Together with an optional tool lubricator, the Anti-Frost Control prevents compressed air tools from freezing up, even in cold ambient temperatures.
A multitude of carefully considered options makes these portable compressors even more versatile: for example, a hose reel with twenty metres of lightweight hose, a toolbox for convenient storage and a closed floor pan.
A version designed for use in refineries is available, which includes a spark arrestor and an engine shut-off valve. A check valve is provided for sandblasting applications.
Technically oil-free compressed air
A filter combination can also be configured for applications requiring technically oil-free compressed air, e.g. line flushing or concrete remediation.
Efficient and tough
Powerful energy-saving team
The KAESER rotary screw compressor airend with energy-saving SIGMA PROFILE rotors is driven via gearing by a tough, water-cooled three-cylinder Kubota diesel engine. An electric fuel pump makes fuel line venting simple.
The wide-opening enclosure provides excellent component access, which makes service work a breeze thereby ensuring maximum compressed air availability.
The PE fuel tank fits perfectly into the available space and holds enough diesel fuel for extended operation without the need for refuelling.
A cleaning opening is located in the floor pan which ensures that the machine can be kept clean and running at optimum performance.
Cool, dry compressed air
The compressed air aftercooler cools the compressed air to 7 °C above ambient. Because the aftercooler is installed at an angle the condensate is able to drain away easily.
This environmentally-friendly design prevents problems caused by freezing in winter and the condensate is evaporated using the hot exhaust gases from the engine.
Multiple equipment options for maximum versatility
The stationary versions of the M 27 and M 31 feature a metal enclosure. Towable versions are available with either a soundproof, galvanized and powder-coated steel enclosure or a double-walled soundproof rotomolded polyethylene enclosure.
A brushless, maintenance-free, 6.5 kVA synchronous generator (IP54) is optionally available. It can be switched from continuous mode to energy-saving on-off mode depending on the amount of power required.
This option transforms the M 27/M 31 into a versatile construction site powerhouse.
Easy to operate
The low position height of the operating panel and other controls on the metal enclosure version makes these packages perfect for installation on flat-bed trucks. Operation is made simple via user-friendly icons and a single start switch.
Always on the safe side
On packages equipped with a polyethylene enclosure, the generator control panel is safely tucked into the plastic moulding that protects the rear corners of the unit.
Additional safety features include IP 44-enclosed sockets, a lockable main breaker and an isolating switch with insulation monitoring.
Dedicated intake filter
Optimally sized separate air filter for the compressor and engine for enhanced reliability and service life; filters can be quickly cleaned or replaced on site.
Oil temperature control as standard
Automatic thermostatic valve ensures fast warm-up – the compressor quickly reaches and stays at its optimal operating temperature; no excessive condensate accumulation in the compressor oil circuit; long-lasting separator cartridge; packages without air treatment or B variant additionally available with Anti-Frost Control.
Standard rating of -10 °C to +45 °C; a low-temperature version with engine coolant pre-heater available for extremely cold starts.
Ignition switch with glow plug pre-heat feature; operation via intuitive pictograms; fully automatic monitoring; automatic shutdown on fault; display of operating hours, operating pressure and airend discharge temperature; main breaker inside the lockable enclosure.
Tough Al-Ko chassis
All chassis are galvanised; with or without overrun brake; with or without tow bar height adjustment.