Big Blue 700X Duo Pro with ArcReach

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

Big Blue 700X Pro with ArcReach

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

More Power

700 Amps of weld power and 20,000 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.

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 700X Pro with ArcReach

Big Blue 700X Pro with ArcReach

Auxiliary Power*

  • 1 x 415-380 V 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 air conditioners, 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 700 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

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 A300 A at 28 V,
100% Duty Cycle
400 A at 36 V,
40% Duty Cycle
85 VDC
30 VDC**

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

H: 1092
H: 1283 (top
of exhaust)
W: 724
D: 1654

Net: 784kg

Ship: 799kg

*Additional 75 kg when fuel tank is full

40 - 800 A500 A at 34 V,
100% Duty Cycle
700 A at 24 V,
60% Duty Cycle
(Dual Outputs)
14 - 50 V300 A at 28 V,
100% Duty Cycle
400 A at 36 V,
40% Duty Cycle
14 - 50 V500 A at 34 V,
100% Duty Cycle
700 A at 24 V,
60% 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
Industrial air/oil cooled 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

68.0 dB

Weld (800 A Load):
74.7 dB

Low Oil Pressure, High Coolant
Temperature, Low Fuel Level