Big Blue® 800 Duo Pro Engine-Driven Welder | MillerWelds

Big Blue® 800 Duo Pro

907751
A complete multi-process & multi-operator engine driven welder that delivers two independent pipe quality arcs in one complete package. Equipped with ArcReach® technology, operators can change weld settings from the ArcReach feeder or remote. RMD® & Pulsed MIG welding capabilities are added with the ArcReach Smart Feeder.
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Base Model
907751

Wireless Interface Control
907751001

Get Total Control — Where You Work: Wireless Interface Control

Features

Heavy-Duty Low-Speed DEUTZ TD2.9 L4 T4F Industrial Diesel Engine
The cleanest, greenest diesel power available. DEUTZ T4F models utilize diesel oxidation catalyst (DOC) technology to keep the air clean with NO exhaust after-treatment maintenance.
Multi-Arc Welding
One dependable engine - two independent arcs with up to 400 amps each (or 800 amps for a single operator). Plug in additional inverter welders for a true multi-operator (3+ arc) work platform!
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.
Advanced Features for the Professional Welder
  • Adaptive Hot Start™ makes starting stick electrodes easy without creating an inclusion.
  • Infinite arc control available in the Stick and Wire modes for easier fine tuning of tough-to-weld materials and out-of-position applications.
  • Lift-Arc™ TIG provides arc starting that minimizes the risk of electrode/work contamination without the need for high frequency.
Industrial USB Port
Quickly upload the latest software and download machine log files to retrieve in-depth information such as diagnostics and machine statistics.   Learn More
Dynamic DIG™
Unlike conventional DIG that provides a preset amount of short-clearing current, Miller’s proprietary Dynamic DIG works on a time-based algorithm that automatically adjusts the amount of current required to clear a short. What does this mean? A smoother more consistent arc that can be tailored to match application, material, fit-up, and welder technique.   Learn More
Increased Productivity & Safety
More arc-on time, and reduced exposure to slip, trip, and fall hazards can be realized using ArcReach because less time is spent going back to the welding power supply to set process and arc amperage or voltage.
Electronic Engine Display
Electronic engine display simultaneously displays fuel level, engine hours, coolant temperature, oil pressure, battery volts, and engine RPMs. Also tracks oil change intervals and displays engine diagnostics for quick and easy servicing.
Other Standard Features
Output contactor control, digital meters with SunVision™ automatic idle, thermal overload protection, and 120-volt engine block heater.
ArcReach Heater Compatibility
Take charge of your field preheat and bakeout applications up to 600 degrees Fahrenheit (315°C). This system uses induction heating to generate heat in workpieces, so welders can do their own preheating quickly and safely. A part of the ArcReach technology platform, the ArcReach Heater is an accessory for select ArcReach welding power sources.   Learn More
ArcReach® Technology
Exclusive ArcReach technology uses existing weld cables to communicate process adjustment commands back to the engine-driven welder. With an ArcReach system, amperage & voltage are conveniently located at the operator's fingertips - not back at the power source.   Learn More

Not Included

  • Weld leads

Specifications

Processes

Regulated Metal Deposition (RMD)

General Specifications

Title Big Blue® 800 Duo Pro
Industries Interests Construction and Fabrication
Mining
Pipeline
Railcar
Amperage 20 A - 800 A
Weldable Metals Stainless Steel
Steel
Rated Carbon Diameter 1/2 in (12.7 mm)
Current Type DC
Max Open Circuit Voltage 85 VDC
Portability Fork Pockets
Lift Eye (Standard)
Trailer (Optional)
Cold Weather Starting Aids Engine Block Heater
Glow Plugs
Engine Brand Deutz
Engine Compliance T4F
Engine Idle Speed 1350 RPM
Engine Weld Speed 1800 RPM
Fuel Tank Size 25 gal.
Fuel Type Diesel
Horsepower 65.7 hp
Weld Output CC / CV
Rated Output Separate (dual outputs, each side): CC/DC - 400 A at 36 V; CV/DC - 400 A at 34 V / Paralleled (combined):CC/DC - 700 A at 44 V, 800 A at 38 V; CV/DC - 750 A at 40 V, 800 A at 38 V
Single Phase Auxiliary Continuous Power 12000 W
Single Phase Auxiliary Peak Power 15000 W
Sound Rating Idle: 71.3 dB / Weld: 78.9 dB
Three Phase Auxiliary Continuous Power 20000 W
Three Phase Auxiliary Peak Power 27000 W
Applications Mobile Fabrication & MRO
Process Pipe
Net Width 28.5 in
Net Height 46 in
Net Length 69.5 in
Net Weight 1870 lbs
Warranty 3 Years
Miller's True Blue Warranty

Accessories

ArcReach Stick-TIG Remote Front
ArcReach® Stick/TIG Remote

Portable and lightweight, the ArcReach stick/TIG remote paired with a Dimension, XMT, or compatible engine-driven ArcReach power source allows you to change weld setting at your work area, saving a trip to the power supply. No extra control cable to purchase, maintain, string or unstring—saving time and money.
ArcReach Smart Feeder

ArcReach Smart Feeder system delivers excellent RMD® and Pulse, MIG and Flux-Cored welding up to 200 feet away from the power source with no control cables. This system provides full remote control capabilities, including weld process selection, material
ArcReach Smart Feeder, Dinse

ArcReach Smart Feeder system delivers excellent RMD® and Pulse, MIG and Flux-Cored welding up to 200 feet away from the power source with no control cables. This system provides full remote control capabilities, including weld process selection, material
ArcReach Heater and TC Extension Cable Box
ArcReach® Heater with Extension Cable Package

Portable air-cooled induction heating system for preheat and bake-out applications up to 600 degrees Fahrenheit (315° C). Includes heater and extension cable - requires selection of either air-cooled cable(s) and/or air-cooled quick wraps as heating tools.

Resources

Literature

Construction Brochure
ArcReach Product Selector Guide
Trailblazer and Big Blue Process Quick Start Guide
Dynamic DIG Flyer

Articles

Big Blue Application Image
Dual-Operator Engine-Driven Welder Help Superior Steel Complete Complex Structural Erection Projects More Efficiently
Superior Steel relies on multiple Miller® Big Blue® 800 Duo Pro diesel engine-driven welders to increase productivity with...
Dual Operator Application Image
Engine-Driven Welders with Dual-Operator Capabilities Save Space and Fuel
A diesel engine-driven welder with dual-operator capabilities is one tool that offers the versatility to help accomplish...
Lambeau Field Application Image
Maximize Efficiency and Space with Dual-Operator Engine-Driven Welders
It's increasingly important for companies to complete jobs on schedule and on budget, and fuel and material costs — along...

Videos

Stop Wasting Time and Money in Field Welding Operations
ArcReach® technology minimizes time spent walking to the power source to make changes, maximizing arc-on time, quality and...
Save Time and Money with Miller ArcReach Remote Control Technology — Now Available on Engine Drives
Miller’s ArcReach remote control technology eliminates the need to go back to power source to make changes, which saves...
ArcReach™ Technology Increases Arc-On Time and Productivity, Reduces Safety Hazards
ArcReach minimizes job site hazards by reducing trips to the power source, while improving quality and increasing...

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