Processes
Stick (SMAW), MIG with wire feeder (GMAW), Flux-cored (FCAW), DC TIG (GTAW), RMD, Pulsed MIG, Submerged arc (SAW), Air carbon arc cutting and gouging (CAC-A), Stud welding
Miller Stick / Engine-Drive Support
Big Blue 800 Series
Miller's highest-output diesel engine-driven series for dual-operator, multi-arc, Air Pak, stud, gouging, and heavy industrial work.
Stick (SMAW)MIG with wire feeder (GMAW)Flux-cored (FCAW)DC TIG (GTAW)RMDPulsed MIGSubmerged arc (SAW)Air carbon arc cutting and gouging (CAC-A)Stud welding
Heavy industrial dual-operator diesel engine-drive
Welding range
Separate outputs: 20 - 400 A each side. Paralleled: 40 - 800 A. CV MIG/FCAW: 15 - 50 V.
Engine
Deutz TD2.9 L4 diesel, 65.7 hp at 1,800 rpm
Auxiliary power
Three-phase: peak 27,000 W, continuous 20,000 W. Single-phase: peak 15,000 W, continuous 12,000 W. Air Pak model compressor: 40 cfm idle / 60 cfm weld.
Weight
Duo Pro: 1,869 lb. (848 kg). Duo Air Pak: 2,095 lb. (968 kg).
Class
Heavy industrial dual-operator diesel engine-drive
Machine Packages
| Stock number | Catalog package |
|---|---|
| 907751 | Big Blue 800 Duo Pro Deutz |
| 907752 | Big Blue 800 Duo Air Pak Deutz |
| 907752003 | Big Blue 800 Duo Air Pak Deutz with WIC |
Welding Output
- Separate CC: 400 A at 36 V each side, 100% duty cycle
- Paralleled CC: 700 A at 44 V and 800 A at 38 V, 100% duty cycle
- Separate CV: 400 A at 34 V each side
- Paralleled CV: 750 A at 40 V and 800 A at 38 V
Key Support Notes
- Dual-operator output or paralleled high-output mode
- Wireless Interface Control option
- Air Pak compressor option
- Multi-arc welding support
- Stud welding support
Accessories and Process Paths
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SuitCase Feeders
Voltage-sensing or wire-feeder path listed for supported engine-drive machines.
Open support pageArcReach Smart Feeder
Smart Feeder path for ArcReach-equipped models where catalog-listed.
Open support pageArcReach Stick/TIG Remote
Remote welding-control path listed for supported ArcReach models.
Support path pendingArcReach Heater
Preheat and field heating path listed for supported Trailblazer and Big Blue models.
Support path pendingDynasty 210 Series
TIG/stick power source path listed for larger Big Blue models.
Open support pageFull KVA Adapter Cord
300517 Full KVA adapter cord listed for Bobcat, Trailblazer, and Big Blue engine-drive models.
Support path pendingAmazon link: Needs verification.
Full KVA Plug Kit
119172 Single-phase 120/240 V, 50 A plug kit listed for Bobcat, Trailblazer, and Big Blue models.
Support path pendingAmazon link: Needs verification.
Full KVA Plug Kit
254140 Three-phase 240 V, 50 A plug kit listed for Big Blue 500, 600, and 800 models.
Support path pendingAmazon link: Needs verification.
Protective Cover
301113 Protective cover for Big Blue 600 Air Pak and Big Blue 800 Series Deutz models.
Support path pendingAmazon link: Needs verification.
Remote Output Panel Kit
951850 Remote output panel kit for Big Blue models except Big Blue 450 Duo CST.
Support path pendingAmazon link: Needs verification.
HWY-225 Trailer
Trailer path listed for Big Blue models.
Support path pendingDesiccant Air Dry System - Side Mount
195117 Air dry system for Air Pak models where catalog-listed.
Support path pendingAmazon link: Needs verification.
Desiccant Air Dry System - Rear Mount
195117001 Air dry system for Air Pak models where catalog-listed.
Support path pendingAmazon link: Needs verification.
Dimensions
H: 46 in. / 53.5 in. to top of exhaust, W: 28.5 in., D: 69.5 in.
Source: Miller Electric 2026 Full-line Catalog, catalog page 89, literature ED/14.0. Machine and accessory relationships are source-backed catalog references. Amazon purchase links stay separate and only appear after independent product verification.