Overview#
The Airman SDG150 delivers 120 kW of prime power from a John Deere 6068 HFG 05 inline-six diesel engine — Airman's first model in the lineup to use a non-Isuzu powerplant, leveraging John Deere's proven 6.8-liter platform for the 150 kVA class. The unit runs 24 hours at full load on its 204-gallon integral tank.
At 66 dBA, the SDG150 operates quietly enough for noise-sensitive urban construction and event applications. Standard 110% fluid containment and Tier 4 Final compliance meet California environmental requirements. The 8,488 lb operating weight puts this unit firmly in the towable trailer class.
The John Deere 6068 Advantage#
The SDG150 is the first model in Airman's portable lineup to use a non-Isuzu powerplant, and the choice of John Deere's 6068 HFG 05 is deliberate. The 6.8-liter inline-six is one of the most proven power generation engines in North America, with thousands of units deployed in standby and prime applications across multiple OEMs. John Deere's dealer network provides parts availability in virtually every Northern California county, which translates to faster turnaround on scheduled and unscheduled maintenance. The 6068 platform's turbocharged aspiration delivers strong transient load response — important for applications like elevator motor starting and HVAC compressor cycling where instantaneous demand can spike well above the nominal load.
Our Service Experience#
The SDG150 is our go-to recommendation for large commercial projects in noise-restricted zones. At 66 dBA, it operates within the daytime noise limits of most Bay Area municipal ordinances, which eliminates the permitting headaches that come with louder units. We deploy the SDG150 on hospital campus renovations, downtown San Francisco high-rise construction, and large-scale outdoor events in Napa and Sonoma where amplified sound systems cannot compete with generator noise.
At 8,488 lbs, the SDG150 requires a dedicated trailer and typically a flatbed delivery rather than pickup towing. The 204-gallon tank and 24-hour runtime align perfectly with daily fuel delivery schedules on major construction sites. The John Deere 6068 has been straightforward to service in our fleet — the engine shares components and procedures with thousands of John Deere power units in the region, so every diesel technician on our team is familiar with the platform. Standard 250-hour oil changes and 500-hour fuel filter replacements keep these units running reliably through multi-month deployments.
