Miller Big Blue 400X Pro – Kubota V1505 Diesel Welder Generator (International Model 907732010)
Product Overview
The Miller Big Blue 400X Pro (907732010) is a heavy-industrial diesel engine-driven welder powered by the reliable Kubota V1505 four-cylinder liquid-cooled diesel engine. It delivers smooth arc performance, excellent fuel efficiency, and outstanding duty cycle capability for welding, fabrication, construction, maintenance, and repair operations.
With 350A @ 27V at 100% duty cycle, a wide 20–400A welding range, and 10,000 watts of continuous single-phase auxiliary power, this machine provides the muscle needed to run welding processes and power tools simultaneously. Digital SunVision™ meters, Dynamic DIG™, Lift-Arc TIG, and simple front-panel controls enhance usability and precision.
Key Features
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Digital SunVision™ meters (preset & actual values)
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Simple, intuitive process control
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Dynamic DIG™ adaptive arc force
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Lift-Arc TIG with Auto-Stop™ & Auto-Crater™
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Thermal overload protection
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Industrial USB port
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Automatic engine idle & block heater
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Heavy-duty Kubota V1505 diesel engine
Specifications Table
Welding Performance
| Category | Specification |
|---|---|
| Weld Output Range (Stick/TIG) | 20–400 A |
| Weld Output Range (MIG/FCAW) | 14–40 V |
| 100% Duty Cycle @ 40°C | 350A @ 27V / 300A @ 32V / 400A @ 24V |
| Processes | SMAW, DC TIG, MIG*, Flux-Cored*, CAC-A |
| Carbon Arc Gouging | Rated 3/16″ • Capable 1/4″ |
*Requires wire feeder
Auxiliary Power
| Category | Specification |
|---|---|
| Peak Output | 12,000 watts |
| Continuous Output | 10,000 watts |
| Voltage / Phase | 120/240 V • Single-Phase |
| Frequency | 60 Hz |
| Amperage | 84A / 42A |
Engine – Kubota V1505
| Category | Specification |
|---|---|
| Engine Type | 4-cyl liquid-cooled diesel |
| Horsepower | 20.2 HP |
| Idle Speed | 1,500 RPM |
| Weld Speed | 1,800 RPM |
| Fuel Capacity | 11.5 gal (43.5 L) |
| Oil Capacity | 5.9 qt (5.6 L) |
| Coolant Capacity | 6 qt (5.7 L) |
| Automatic Shutdown | Low oil pressure • High coolant temp • Low fuel |
Receptacles (International Model)
| Category | Specification |
|---|---|
| Receptacle Panel | International receptacle panel |
| Connections Included | 16A 240V receptacle • 20A 120V GFCI receptacle • 32A 240V receptacle |
| Circuit Protection | All receptacles include dedicated circuit breakers |
Sound Levels
| Mode | dB Rating |
|---|---|
| Idle | 66 dB |
| Weld | 71.6 dB |
Dimensions & Weight
| Category | Specification |
|---|---|
| Height | 32 in (813 mm) |
| Width | 26.25 in (667 mm) |
| Depth | 56 in (1,422 mm) |
| Weight | 950 lb (431 kg) |
Download the Full Spec Sheet
👉 Download the Miller Big Blue 400X Pro Spec Sheet (PDF)
Why Buy From Service Welding Supply
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Authorized Miller dealer
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Fast, secure freight shipping
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Competitive pricing with expert support
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Knowledgeable staff for setup & accessories
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Excellent customer service before and after the sale










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