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 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.

Improve Safety With Noise Reduction Technology

With noise reduction panels, low and high idle controls, and Standby Mode, operators can safely communicate while working without disturbing the job site or neighbors.

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
    • 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
  • 45 CFM @ 100 psi (175 psi max)
  • Belt-driven, 100% duty cycle, VMAC oil-injected rotary screw
  • Kubota D902 Diesel 3-cylinder, naturally aspirated 3,600 RPM, Tier 4 Final
Weight (wet)
  • Approximately 560 lb (254 kg)
  • 33” (l) x 23” (w)* x 29” (h); 83.8cm (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)
  • *27” (68.6 cm) w/ radiator sound deflector
Decibels (dB) @ 21 feet (6.4 meters)
  • 75 dB at max idle, 66 dB at low idle, 0 dB in standby mode
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
    • 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
  • Remote mounted control/digital display box with electronic key switch and LCD for compressor on/off controls, observing system status, and adjusting parameters
  • Remote mounted generator/welder control box with genset voltage meter and selector, welding current and ARC force control
  • Socket for optional remote welding control
  • Integrated voltage sensing interlock feature ensures safe welding/battery boosting and protects equipment by disabling the genset in unsafe conditions
  • Separate selector switches engage compressor and generator; either function can be selected at any time
  • Multi-speed throttle control responds to operating function and air demand
  • With compressor-only selected, and sustained periods of no air use, the control system will shut down the engine (Standby Mode); the engine will not shut down automatically with generator selected
Cold Climate Protection
  • Engine and compressor wait until the system temperatures are above 41°F (5°C) before loading and going into a running state
  • Engine automatically restarts  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
Fuel Supply Options
  • 7-gallon tank with fuel gauge and low fuel shut-off sensor
  • External Diesel Fuel Pump Kit
Air Receiver Tank
  • Minimum 10-gallon air receiver tank recommended (not included) 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

Air Compressor-Generator Power System Downloads

Accessories and Service Kits


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