FM708/11, FM708/09, FM808/5
Kaeser Kompressoren will showcase a wide range of products designed for international markets at this year’s Bauma in Munich. Highlights include new models, enhanced equipment options, and a concept study for a battery-powered portable compressor, offering a glimpse into the future of construction site compressed air supply.
A key focus of the exhibition will be the diverse drive concepts that define the Mobilair series. Whether powered by an electric motor, or petrol and low-emission diesel engines, there is a solution for every requirement. The lineup ranges from the compact, hand-towable M10E with a 5.5 kW electric motor, delivering just under 1 m³ of compressed air, to the powerful diesel-driven, oil-free industrial compressor with 447 kW and an impressive output of over 45 m³/min.
The Mobilair M44 now provides power to European construction sites, thanks to its 13 kV generator. The perfect choice for global applications: M76 with Kubota engine or M81 with Hatz engine. The M50E is a true all-rounder for construction site applications.
With an output of 48 m³/min, the M480 is the largest portable compressor in the Mobilair range for the North American market.
Battery Powered Portable Compressed Air
The battery-operated M50B looks like an ordinary portable compressor, but on the inside it differs significantly. Here, a 300-kilogram battery allows the system to run cable-free on e-power. The machine is based on the most prevalent worldwide compressor size of 5.2 m³/min (185 cfm); working pressure can be set between 6 and 14 bar. The battery has been designed to provide sufficient power to cover a typical working day for a compressor of this capacity. The guide values for this calculation were derived from the M50B’s sister models equipped with Telematics, powered by a diesel engine and operated worldwide.
The proven 5 m³ M50E from the e-power series now comes in a new version with control technology. In addition to the existing model with a robust star-delta starter, the M50E SFC (Sigma Frequency Control) is now available with a frequency converter. This innovation significantly enhances the flexibility of this portable construction compressor, delivering decisive benefits across a range of applications.
With the frequency converter, maximum pressure can be adjusted seamlessly between 6 and 11 bar, making it easy to tailor performance to specific tasks – whether blowing out formwork at 7 bar or dry ice cleaning at 10 bar. The frequency converter also reduces starting current, making it the perfect choice for sensitive power networks, when operating with generators, or in future-ready applications with external battery storage. As a result, power network overloads are effectively prevented.
Moreover, motor speed is automatically adjusted according to air demand, optimising power consumption and further improving energy efficiency.
Compact, durable and environmentally friendly
The M50E SFC is available with a roto-moulded, impact-resistant PE enclosure for mobile use or a zinc-phosphated, powder-coated metal enclosure for stationary applications. Both options provide excellent protection and long-term durability.
Another environmentally friendly feature is the optional compressed air aftercooler. Like all e-power Mobilair compressors, the separated condensate is collected in a dedicated container for safe and responsible disposal.
Mobilair, Elektro, M 50 PE, M_50_PE, M50PE, M 50 E, M_50_E, M50E, E-Anlage
Unrivalled performance for demanding applications
The M480 is the most powerful oil-injected portable screw compressor in the Mobilair series, designed specifically for the North American market. With an impressive free air delivery of up to 48 m³/min, it sets new benchmarks in efficiency and versatility.
At its core lies a high-performance 12-litre Cummins engine delivering 343 kW, fully compliant with stringent Tier 4 emissions standards, ensuring environmentally friendly yet exceptionally powerful operation.
Offering two continuously adjustable pressure ranges (6-8.6 bar and 6-14 bar), the M480 provides maximum flexibility. Its innovative pV control system automatically increases free air delivery when a lower operating pressure is selected, optimising energy efficiency and ensuring air supply is precisely matched to demand.
The system is available in three configurations: a skid-mounted version, a model with an auxiliary chassis and parking brake, and a road-ready version featuring a heavy-duty chassis with an electric brake. No matter the configuration, a crane lifting eye, forklift pockets, and lashing points ensure safe and secure transportation.
Solutions for demanding construction site conditions
Exciting news in the 7.5 to 8 m³ portable compressor class: one model becomes two. The M76 and M81 portable compressors replace the M82 model and comply with the latest emissions standards – Stage V for the EU and Tier 4 for North America. With these new models, the Mobilair series delivers even greater efficiency, ease of maintenance and user comfort.
At first glance, the two models look identical and share much of the same technology. However, under the enclosure, they feature different powertrains: the M76 is equipped with a Kubota engine, while the M81 is powered by a Hatz engine. Both compressors operate without an SCR system or AdBlue, making exhaust aftertreatment much simpler.
Another key highlight is the flexibility of their compressed air output. Both models offer two continuously adjustable pressure ranges: 6-10.3 bar and 6-14 bar.
A range of optional compressed air treatment components is also available. For example, compressed air aftercoolers can be integrated for cool, condensate-free compressed air, while microfilter combinations ensure technically oil-free air. The adjustable compressed air discharge temperature, combined with an optional reheating function, provides further advantages for applications such as blasting.
The M76 and M81 can also be configured to provide on-site power. For construction sites requiring electricity, the compressors can be equipped with generators, available in 8.5 kVA and 13 kVA variants.
Furthermore, both models are designed for maximum ease of use and maintenance.
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