Big Blue® 400 Pro Engine-Driven Welder | MillerWelds

Big Blue® 400 Pro (Kubota)

907732
Designed with the professional in mind, the Big Blue 400 Pro is the best for ease of use, reliability and fuel economy.
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Get Total Control — Where You Work: Wireless Interface Control

Features

Heavy-Duty Low-Speed Kubota V1505 Industrial Diesel Engine
Used in industrial applications around the world, the V1505 is designed to run 10,000 hours before major overhaul. Backed by worldwide support and service.
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
Quiet Operation
Improves work site safety and communication.
Digital Meters with SunVision™
Enables welding parameters to be viewed with greater clarity 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.   Learn More
Auto Remote Sense™ (ARS)
Detects if a remote control is plugged into the 14-pin receptacle and eliminates confusion of a remote/panel switch.
Simple-to-Set Controls
Requires no elaborate procedure - just select process and weld!
HD Powder Coat
All painted sheet metal is pretreated with a zinc-rich primer to provide extra protection against rust & corrosion (comparable to stainless steel).
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.
Low OCV Stick (VRD)
When activated, reduces the open-circuit voltage to 15 volts when the power source is not in use, increasing operator safety without compromising arc starts.
Other Standard Features
Output contactor control, automatic idle, thermal overload protection, and 120-volt engine block heater.

Not Included

  • Weld leads

Specifications

Processes

Air Carbon Arc Cutting and Gouging (CAC-A)
Flux Cored (FCAW)
MIG (GMAW)
Stick (SMAW)
TIG DC (GTAW-DC)

General Specifications

Title Big Blue® 400 Pro (Kubota)
Industries Interests Construction and Fabrication
Pipeline
Amperage 20 A - 400 A
Weldable Metals Stainless Steel
Steel
Rated Carbon Diameter 3/16 in (4.8 mm)
Current Type DC
Max Open Circuit Voltage 85 VDC
Portability Lift Eye (Standard)
Trailer (Optional)
Cold Weather Starting Aids Engine Block Heater
Glow Plugs
Engine Brand Kubota
Engine Compliance T4F
Engine Idle Speed 1500 RPM
Engine Weld Speed 1800 RPM
Fuel Tank Size 11.5 gal.
Fuel Type Diesel
Horsepower 20.2 hp
Weld Output CC/CV
Rated Output 400 A at 24 V, 100% Duty Cycle,350 A at 27 V, 100% Duty Cycle,300 A at 32 V, 100% Duty Cycle
Single Phase Auxiliary Continuous Power 10000 W
Single Phase Auxiliary Peak Power 12000 W
Sound Rating Idle: 66 dB, Weld: 71.6 dB
Applications Fabrication
Mobile Fabrication & MRO
Process Pipe
Structural Welding
Net Width 26.25 in
Net Height 32 in
Net Length 56 in
Net Weight 950 lbs
Warranty 3 Years
Miller's True Blue Warranty

Accessories

Control Adapters

Remote Hand Control, RHC-14, 20ft

Spoolmatic® 30 ft.

The choice of professionals for exceptional aluminum welding results in industrial or commercial applications.
WC-24 Weld Control

A WC-24 is required to operate Spoolmatic and Spoolmatic Pro guns with 14 Pin Miller CV power sources and engine drives. Not required with Millermatic machines - check your literature for typical installations.

Resources

Literature

Truck Installation Diagram (DWG)
Truck Installation Diagram (PDF)
Trailblazer and Big Blue Process Quick Start Guide

Articles

Welding on a structural steel connection
Column Splice and Moment Weld Connections in Field Welding
Get tips to save money and maximize field welding productivity and quality when using welded moment and column splice...
Operator grinds on a jobsite with an engine-driven welder/generator in the foreground
Do You Have GFCI Tripping Issues on Your Welder/Generator?
Is frequent GFCI tripping on your engine-driven welder causing troubleshooting headaches? Get tips to help resolve these...
Operator carbon arc gouges on a beam on an outdoor jobsite
What Is Arc Gouging? Get Answers to 7 Common Questions
Carbon arc gouging is often used to remove material before welding. Get some gouging tips to help improve your results.

Videos

Miller Highlights Best Practices for Diesel Engines
Following these best practices can help prevent expensive repairs and avoid warranty conflicts with your diesel...
Discovery’s Gold Rush Mining Crew Relies on Miller Equipment
On a remote claim in Canada’s Yukon Territory, Parker Schnabel and his crew are on a quest to mine 2,000 ounces of gold.
More Power and Capabilities with Tier 4 Final-Compliant Miller Engine-Driven Welders
Miller has redesigned its diesel engine-driven welders to reduce emissions, while also maximizing power output and adding...

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Question & Answers