Big Blue 800X Duo Air Pak with ArcReach

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Dual Operator. Increased Efficiency. More Power.

  • Railroad Maintenance
  • Pipe Welding
  • Mining Maintenance
  • Mechanical Contractors
  • Maintenance and Repair Rigs
  • Construction
  • Submerged Arc SAW
  • Stud Welding 13mm
  • Stick SMAW
  • RMD
  • Pulsed MIG
  • Flux-Cored FCAW
  • Air Carbon Arc CAC-A 13mm
  • Constant Current & Constant Voltage Weld Output
  • Direct Current Weld Output
  • Single Phase Input Power
  • Three Phase Input Power



Big Blue 800X Duo Air Pak with ArcReach

ArcReach welding technology minimises the non-value added time spent walking to and from the power source - and maximises arc-on time, weld quality and jobsite safety.

More Power

800 Amps of weld power and 27,000 watts of peak generator power.

Multi-Arc Welding

One dependable engine — two independent arcs with up to 400 Amps each. Or plug in an additional inverter for a true multi operator work platform! Example: Two additional XMT multi-process machines equals 4 operators, up to 200 Amps each. Premium quality arcs allow operators to work independently with no arc interaction. Multi operator welding has never been easier or more versatile.

Ingersoll Rand

Ultra-reliable industrial rotary screw compressor. 30,000-hour life expectancy. Independent on/off control for applications not requiring compressed air — allows greater fuel savings and longer compressor service intervals.

Auto Remote Sense™

Standard 14-pin receptacle. For simple connection of remote controls and wire feeders.

HD Powder Coat

With zinc-rich primer protects sheet metal from rust and corrosion.

Increased Efficiency

More arcs and better fuel economy equal increased profits for your business. Estimated savings are 34 percent with a dual-operator unit versus two single operator units.

Digital Meters

SunVision technology enables welding parameters to be viewed with greater clarity than analogue meters at virtually any angle. Meters can be seen clearly even in direct sunlight.

Industrial USB Port

Quickly upload the latest software and download machine log files to retrieve in-depth information such as diagnostics and machine statistics.

Big Blue 800X Duo Air Pak with ArcReach

Big Blue 800X Duo Air Pak with ArcReach

Auxiliary Power*

  • 1 x 415-380V
  • 32 Amp Sockets.
  • 2 X 240 V 15 Amp Sockets
  • RCD

*Generator auxiliary power is 60Hz, and intended for operating equipment associated with welding, such as angle grinders, drills and floodlights. Some Australian 50Hz equipment incorporating induction motors, such as pumps, fans, air compressors, refrigeration or airconditioners, may not operate correctly and could be damaged. Refer to appliance supplier or manufacturer to confirm suitability.

Arc Control

Beneficial when welding with stick and solid wires for easier fine tuning of tough-to-weld materials and out-of-position applications.

Simple Paralleling Switch

Makes switching from a single operator to dual operators a breeze. Weld up to 400 Amps per side when set up in dual-operator mode, or up to 800 Amps in single-operator mode.

20,000 Watts of Pure Generator Power

Plug in an extra Miller inverter-based power source for a second welding arc.

Heavy-duty Low Speed T4I Industrial Diesel Engines

Electronic Engine Display

Simultaneously displays fuel level, engine hours, coolant temperature, oil pressure, battery volts, engine rpm, and air pressure. It also tracks oil change intervals, compressor hours, and displays engine diagnostics for quick and easy servicing.

Standard Features

  • ArcReach
  • Digital preset weld meters
  • Automatic idle
  • Vandalism lockout
Welding ModeOutout ModeWeld Output RangeWeld Output
Rated at
104° F (40° C)
Max Open
Circuit Voltage
Generator Power Output Rated at 40° C***Dimensions (mm)Weight*
(Without Fuel)
20 - 400 A400 A at 36 V*,
100% Duty Cycle (Each Side)
85 VDC
30 VDC**

415-380V 60Hz 3 Phase:
27,000 watts peak,
20,000 watts continuous
(dependent of weld output)
240V 60Hz 1 Phase:
5,500 watts peak,
4,000 watts continuous
(independent of weld output)

H: 1168
H: 1359 (top
of exhaust)
W: 724
D: 1765

Net: 917 kg

Ship: 939 kg

*Additional: 75 kg when fuel tank is full

40 - 800 A700 A at 44 V*,
100% Duty Cycle
800 A at 38 V,
100% Duty Cycle
(Dual Outputs)
14 - 50 V400 A at 34 V*,
100% Duty Cycle (Each Side)
14 - 50 V750 A at 40 V*,
100% Duty Cycle
800 A at 38 V,
100% Duty Cycle

* Meets NEMA and IEC ratings. **VRD voltage for Stick & Sense voltage for Lift-Arc TIG. ***Will operate either 60Hz or 50/60Hz power tools, lights, etc.

Engine BrandHPTypeFeaturesEngine SpeedsCapacitiesSound Levels at 7mAutomatic Engine Shutdown
63.4Turbo-charged four-cylinder,
liquid-cooled industrial diesel
EPA Tier 4i compliant,
includes oil pan and intake manifold heater
Idle: 1350 RPM
Weld: 1800 RPM
Fuel: 95 L
Oil: 10.4 L
Coolant: Integrated Oil

73.0 dB (97.8 Lwa),
77.2 dB at one metre from front panel

Weld (800 A Load):
81.7 dB (106.5 Lwa),
84.4 dB at one metre
from front panel

Low Oil Pressure, High Coolant
Temperature, Low Fuel Level

Compressor BrandFeaturesFree Air DeliveryWorking Pressure ConstantDuty CycleOil CapacityAutomatic Compressor Shutdowns
CE55 G1
Rotary screw with electric clutch for on/off.
Oil change intervals 500 hrs (same as engine). Life expectancy 30,000 hrs.
Idle: 40 cfm
(1.13 m³ /min)
Weld: 60 cfm
(1.70 m³ /min)
100 PSIG 7 bar100%

3.79 L

Oil Temperature