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Miller Big Blue® 400 Pro (Kubota) #907732

Part Numbers: 907732
UPCs: 715959649476
1 Review

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Big Blue® 400 Pro (Kubota) #907732
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Welding type:

Engine Driven

Engine Driven

Material type:

Mild Steel

Mild Steel

Stainless Steel

Stainless Steel



  • Kubota V1505 Diesel Engine
  • 120V Engine Block Heater
  • Stick Welding
  • MIG  Welding
  • TIG Welding
  • 3-Year Miller Warranty

Miller Big Blue® 400 Pro (Kubota) #907732

The Big Blue 400 Pro is designed with a focus on ease of use, overall reliability, and fuel efficiency for reduced costs and a more profitable job. In other words, it's designed for professionals, by professionals.

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.

Quiet Operation

Allows for effective communication and improves work site safety.

Digital Meters with SunVision™

Enables welding parameters to be viewed with greater clarity at virtually any angle. Meters easy-to-read 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.

Auto Remote Sense™ (ARS)

Detects if remote control is plugged into the 14-pin receptacle and eliminates the 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.

View our other welding machines, welding machine accessories, and safety equipment.

Miller Big Blue® 400 Pro (Kubota) Specifications

Title Big Blue® 400 Pro (Kubota)
Industries Interests Construction
Maintenance and Repair - Field Operations
Mechanical Contracting
Pipe Fabrication / Construction
Work / Service Trucks
Processes Air Carbon Arc Cutting and Gouging (CAC-A)
Flux Cored (FCAW)
Stick (SMAW)
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 Gallons
Fuel Type Diesel
Horsepower 20.2 hp
Weldable Metals Steel
Stainless Steel
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 Generator Continuous Power 10000 W
Single Phase Generator Peak Power 12000 W
Sound Rating Idle: 66 dB, Weld: 71.6 dB dB
Carbon Diameter 3/16 in (4.8 mm)
Current Type DC
Max Open Circuit Voltage 85 VDC
Amperage Range 20 - 400
Net Width 26.25 in
Net Height 32 in
Net Length 56 in
Net Weight 950 lbs
Warranty Engine Warranties 
Miller's True Blue Warranty
Portability Lift Eye (Standard)
Trailer (Optional)
Weld Output CC


Height: 34.00 Inches
Width: 28.25 Inches
Length: 58.00 Inches
Weight: 1000 Lb(s) 0 Oz

Manufacturer Reviews

I'm a 798 Pipeliner. I have always been a die hard Lincoln man. It was time for me to purchase a new machine. I tested out side by side the same day the Lincoln SAE 300 Mp, MP Classic & the Miller Big Blue 400. I have just put the Big Blue 400 Pro on my welding rig. The Miller offered so much more control on the settings then the Lincoln. The price value for what the Miller offered compared to the Lincoln was much better. And the new Wireless Interface remote system is outstanding. With this remote you can adjust any setting on the fly from the ditch that you could do standing in front of the machine. I made fun & insulted my friends (in a friendly manner) when they bought their Miller's. Now it's their turn, they are killing me:)

Product Questions and Answers

Q - What Kubota engine is in this? A - It's the Kubota V1505 four-cylinder diesel engine.
Q - Is a remote included? A - No.

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