Air Compressor-Generator-Welder Power System

VMAC’s Compressor-Generator-Welder Power System offers performance in a single compact system. This system includes all the power you need on the jobsite to complete your work.

The self-contained Compressor-Generator-Welder system is ideal for mechanic’s trucks with electric or electric over hydraulic cranes. It can operate electrical equipment, air tools and welding accessories.

Components included:

  • 45 CFM Rotary Screw Air Compressor
  • 8 kW AC Generator
  • 250 A DC Welder (adjustable)
  • 300 A max @ 13V Booster (adjustable) 
  • 100 A max @ 12V, 24V, 36V, 48V Battery Charger (adjustable)
  • Factory-installed Cold Climate Kit – 120V, tested to -40°F (-40°C)

Applications – Common jobs that use the Compressor-Generator-Welder Power System:

  • Mobile heavy duty mechanics
  • Welding trucks
  • Heavy equipment repair technicians
  • Remote access jobs in mining, logging and oil & gas

Air Compressor-Generator-Welder Power System Benefits

Free Up Space

VMAC Multifunction Power Systems leave more space on your truck deck or cargo area because they combine multiple functions into one compact system. The overall system size is six cubic feet smaller than other leading multi-power brands and designed to fit on the side pack of a service truck with a slider.

Reduce Weight

VMAC’s Multifunction reduces truck GVW by 410 lb. Choosing a lightweight multi-power system means you’ll be able to add more tools and equipment to your truck, carry more materials, take advantage of better fuel economy, or even downsize your truck classification.

Reduce Truck Maintenance & Fuel Costs

Multifunction Power Systems save truck maintenance costs and improve fuel economy by allowing you to turn your truck engine off while on the job site. The control system not only automatically idles the system’s engine up/down with air demand, it also turns the engine off/on with air demand.

Easy To Operate & Switch Between Systems

VMAC Multifunction Power Systems allow you to seamlessly switch between operations, without the hassle of complicated controls or maneuvering multiple machines on the job site. This means more time working, improving productivity, and getting your customers back to work faster. It is designed for ease-of-use, to run efficiently with only one operator.

Air Compressor-Generator-Welder Power System Components

Air Compressor

Oil-injected rotary screw; belt-driven; 45 CFM @ 100 psi; 100% duty cycle; up to 175 psi

AC/DC Generator/Welder/Battery Charger/Booster
  • AC: 8 kW output
    • 1 x 30 A, 240V, 60 Hz three phase circuit (w/wo receptacles)
    • 2 x 20 A, 120V, 60 Hz single phase circuit (w/wo receptacles)

  • DC: For battery boosting/charging; other DC loads
    • Boost – 300 A max @ 13V; Charge – 100 A max @ 12V, 24V, 36V, 48V
    • CC mode for SMAW and GTAW (stick/TIG welding)
    • 250 A @ 35% duty cycle; 190 A @ 60% duty cycle
Generator/Welder Control Box

GENSET voltage meter & selector; welding current control and ARC force; socket for optional remote welding control

Kubota D902 Diesel Engine

Tier 4 Final; 3-cylinder, naturally aspirated 3,600 RPM

Control/Digital Display Box

Remote mounted; electronic key switch; selector switches for PTO/GENSET/COMPRESSOR; LCD for compressor on/off controls, observing system status and adjusting parameters

Air/Oil Separator Tank

Separates compressor oil from compressed air


Included ACDelco 12V, 460 CCA, 575 CA

Cold Climate Kit For -40º

Cold Climate Kit is recommended if ambient temperatures frequently drop below -10ºC (14ºF); combine with an optional 1,750 W inverter to warm the system on the way to the job site

Air Compressor-Generator-Welder Power System Specifications

Air Compressor Output
  • 45 CFM @ 100 psi (175 psi max)
Air Compressor Type
  • Belt-driven, 100% duty cycle, VMAC oil-injected rotary screw
  • Kubota D902 Diesel 3-cylinder, naturally aspirated 3,600 RPM, Tier 4 Final
AC/DC Generator/Welder
  • AC: 8 kW output
    • 1 x 30 A, 240V, 60 Hz three phase circuit (w/wo receptacles
    • 2 x 20 A, 120V, 60 Hz single phase circuit (w/wo receptacles)
  • DC: For battery boosting/charging; other DC loads 
    • Boost – 300 A max @ 13V; Charge – 100 A max @ 12V, 24V, 36V, 48V
    • CC mode for SMAW and GTAW (stick/TIG welding)
    • 250 A @ 35% duty cycle; 190 A @ 60% duty cycle
  • ACDelco 12V, 460 CCA, 575 CA
Control System
  • Easy to use digital control system with adjustable parameters
  • Remote mounted generator/welder and compressor control panel
  • Any one function or all can be selected at any time
  • 2-speed throttle control responds to air demand
  • Separate selector switches engage compressor, generator, and PTO
  • With compressor-only selected, and sustained periods of no air use, the control system will shut down the engine
  • Engine auto-restarts on air demand
Cold Climate Protection
  • Engine and compressor will wait until the temperatures are above 41°F (5°C) before loading and going into a running state
  • Engine will automatically restart when system temperature falls below 23°F (-5°C)
  • Small heat strip included in LCD Digital Control Box
  • Battery jump start connections are recommended to be tied into the truck batteries in locations where extreme cold is expected; it is not necessary in mild climates
Cold Climate Kit
  • Recommended if ambient temperatures frequently drop below -10ºC (14ºF)
  • Plugs into a 110V power source and the compressor and separator tank heaters will turn on
  • Optional 1,750 W power inverter allows cold climate kit to engage on the way to the job site
Weight (wet)
  • Approximately 560 lb (254 kg)
  • 33” (l) x 23” (w) x 29” (h); 83.8 cm (l) x 58.4 cm (w) x 73.7 cm (h)
  • Base footprint: 30” (l) x 20” (w); 76.2 cm (l) x 50.8 cm (w)
Decibels (dB) @ 21 feet (6.4 meters)
  • 81.2 dB at high idle, 76 dB at low idle, 0 dB in Standby Mode
Fuel Supply Options
  • 7-gallon tank with fuel gauge and low fuel shut-off sensor
  • External Diesel Fuel Pump Kit
Air Receiver Tank (recommended, not included)
  • Minimum 10-gallon air receiver tank recommended for proper operation of all functions
  • Two years on all major components; VMAC air ends are covered by VMAC’s Lifetime Warranty (Limited)
  • Kubota engine covered by Kubota’s 2-Year warranty.
  • For more information about VMAC’s warranty policies, visit

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