Engine Driven Welders Specs & manuals ↓
Miller Big Blue 400 Pro 907732
The Kubota-powered USA configuration of Miller’s industrial DC engine-driven welder. It supplies 20–400 A CC output, 14–40 V CV output and 10 kW continuous single-phase generator power. Its factory 100% duty ratings include 300 A at 32 V, 350 A at 27 V and 400 A at 24 V. ArcReach and wireless-interface packages use separate stock numbers.
Estimated equipment rental only. Delivery, taxes and applicable fees quoted separately. Final pricing confirmed with dispatch.
Specifications
Equipment
- Manufacturer
- Miller
- Model
- Big Blue 400 Pro 907732
Selected configuration & welding
- Stock number
- 907732 — USA Kubota model
- Engine / fuel
- Kubota V1505 / diesel
- DC stick / TIG range
- 20–400 A
- CV MIG / flux-cored range
- 14–40 V
- 100% duty rating at 32 V
- 300 A
- 100% duty rating at 27 V
- 350 A
- 100% duty rating at 24 V
- 400 A
- Rating ambient
- 104°F / 40°C
- Maximum open-circuit voltage
- 85 V DC
- VRD / Lift-Arc sense voltage
- 30 V DC
Generator & simultaneous use
- Continuous output
- 10,000 W
- Peak output
- 12,000 W
- Voltage / phase / frequency
- 120/240 V AC / single phase / 60 Hz
- Published generator current
- 84/42 A
- Auxiliary power at 125 A weld output
- 10,000 W
- Auxiliary power at 225 A weld output
- 7,500 W
- Auxiliary power at 300 A weld output
- 4,500 W
- Auxiliary power at 350 A weld output
- 1,000 W
Engine & handling
- Engine power
- 20.2 hp
- Engine construction
- Four-cylinder, liquid-cooled industrial diesel
- Weld / idle engine speed
- 1,800 / 1,500 rpm
- Fuel tank
- 11.5 US gal / 43.5 L
- Oil / coolant capacity
- 6 US qt / 5.7 L each
- Automatic shutdowns
- Low oil pressure / high coolant temperature / low fuel
- Factory specification H × W × D
- 32 × 26.25 × 56 in
- Net weight without fuel, Kubota
- 950 lb
- Fuel weight at full tank
- 82 lb
Equipment Details
Capabilities & Features
- Digital weld meters and fault indication
- Lift-Arc TIG with Auto-Stop and Auto-Crater
- Adjustable arc control
- USB software updates and machine-data export
- Generator and welding output for industrial field work
Available Options
- Compatible MIG / flux-cored wire feeder
- TIG torch and remote controls
- ArcReach model 907732001 — separate configuration
- ArcReach / Wireless Interface Control model 907732013 — separate configuration
- Trailer and remote output-panel kits
Specs & Manuals
PDF download
Factory specifications ED/5.7 — October 2025 (PDF)
PDF download
Factory owner manual OM-278215S — November 2025 (PDF)
Serial range: NF450985R – ZZ222222
Manufacturer resource
Factory parts manual PM-278215K (2026) (PDF)
Serial range: MH060319R–ZZ222222R
PDF download
Manufacturer installation / dimensional drawing — 907732 Big Blue 400 Pro, 400 PipePro (PDF)
Manufacturer manuals
Manufacturer manuals and support
