Used Miller Big Blue 800 Duo Air Pak 907752 Deutz Diesel Welder with ArcReach

Name: Used Miller Big Blue 800 Duo Air Pak 907752 ArcReach Diesel Welder for Sale - Welder Vault
Price: 35000.00 USD
Availability: OutOfStock

This Miller® Big Blue® 800 Duo Air Pak™ 907752 that has been previously used is a very efficient and durable engine-driven welding equipment designed for tough industrial and field applications. This highly productive welding system allows for two operator welding, ArcReach® remote control, a built-in 60 cfm rotary screw air compressor, and generator power in one single system.

Perfect for construction, manufacturing, mining, pipe, railcar, mobile fabrication, and maintenance and repair industries, this Miller® Big Blue® 800 Duo Air Pak™ provides the capabilities you need for increased production with less equipment.

Engine-driven by a 65.7 hp Deutz® diesel engine, this system is ready to work under challenging conditions. All our used welding systems are carefully inspected and tested to make sure you get only the best quality at affordable prices.

Key Features

800 amp multi-process engine-driven welder
Dual-operator welding with separate outputs on each side
Single-operator mode with combined output up to 800 amps
Integrated Ingersoll Rand® 60 cfm screw-type air compressor
100% compressor duty cycle for continuous air delivery
ArcReach® remote control capability
Deutz® 4-cylinder diesel engine
EPA Tier 4F compliant engine
20,000-watt continuous three-phase generator power
12,000-watt continuous single-phase generator power
25-gallon fuel tank for extended runtime
Cold weather starting aids including engine block heater and glow plugs
Fork pockets and standard lift eye for easier handling
Excellent arc performance for Stick, MIG, Flux-Cored, TIG, and gouging applications
Built for heavy-duty industrial, fabrication, and mobile service work

Specifications

Product Title / Series: Big Blue® 800 Duo Air Pak™
Part Number: 907752
Industries: Construction & Fabrication, Mining, Pipe, Railcar Technologies, ArcReach
Applications Class: Professional
Machine Type: Engine-Driven Welder / Air Compressor / Generator
Fuel Type: Diesel
Engine Brand: Deutz®
Horsepower: 65.7 hp
Number of Cylinders: 4 Cylinder
Cooling Method: Liquid-Cooled
Engine Compliance: T4F
Engine Weld Speed: 1800 RPM
Engine Idle Speed: 1350 RPM
Cold Weather Starting Aids: Engine Block Heater, Glow Plugs
Fuel Tank Size: 25 gal.
Current Type: DC
Max DC Welding Amperage: 800
Min DC Welding Amperage: 20
Amperage Range: 20 A – 800 A
Rated Output:
- Separate (dual outputs, each side): CC/DC – 400 A at 36 V; CV/DC – 400 A at 34 V
- Paralleled (combined): CC/DC – 700 A at 44 V, 800 A at 38 V; CV/DC – 750 A at 40 V, 800 A at 38 V
Max Open Circuit Voltage: 85 VDC
Rated Carbon Diameter: 1/2 in. (12.7 mm)
Weldable Metals: Stainless Steel, Steel
Air Compressor: Yes
Compressor Brand: Ingersoll Rand Screw-Type Compressor
Compressor Free Air Delivery: 60 cfm (1.70 m3/min.)
Compressor Working Pressure: 100 psig
Compressor Duty Cycle: 100%
Compressor Automatic Shutdown: Oil temperature
Three-Phase Generator Peak Power: 27,000 W
Three-Phase Generator Continuous Power: 20,000 W
Single-Phase Generator Peak Power: 15,000 W
Single-Phase Generator Continuous Power: 12,000 W
Sound Rating: Idle: 71.3 dB / Weld: 78.9 dB
Net Width: 28.5 in.
Net Length: 69.5 in.
Net Height: 46 in.
Net Weight: 2,095 lb.
Portability: Fork Pockets, Lift Eye (Standard), Trailer (Optional)

Download Big Blue 800 Duo Air Pak Spec Sheet

Dual Operator Welding Performance

The Miller Big Blue 800 Duo Air Pak is engineered to maximize productivity on large jobsites. In dual-operator mode, the machine provides two independent welding outputs, allowing two welders to work at the same time from one power source.

Its rated output is impressive:

Separate outputs (each side): up to 400 amps
Paralleled combined output: up to 800 amps

This flexibility makes the machine an excellent choice for crews that need both high output and versatility. Whether you are running one operator at maximum amperage or two operators simultaneously, the Big Blue 800 Duo Air Pak delivers dependable performance.

Supported welding processes include:

Stick (SMAW)
MIG (GMAW)
Pulsed MIG (GMAW-P)
Flux-Cored (FCAW)
Lift-Arc™ DC TIG (GTAW)
Submerged Arc Welding (SAW)
Air Carbon Arc Cutting and Gouging (CAC-A)
Air Plasma Cutting and Gouging (PAC) with optional Spectrum models

Its stable arc characteristics help produce smooth starts, consistent weld quality, and excellent control across a wide range of materials and applications.

ArcReach® Remote Control Technology

Some of the distinctive characteristics of this machine include the ArcReach®. The technology enables the Big Blue 800 Duo Air Pak to interface with the Miller® ArcReach® wire feeder or the ArcReach® Stick/TIG remote without the help of a remote control cable.

ArcReach makes use of the electronics present in both the power source and the feeder/remote to send control signals via the welding cables. Thus, it does not require control cables.

Benefits of ArcReach include:

Remote control without a cord
Reduced downtime and fewer cable-related issues
Full control at the weld site
Greater flexibility for Stick, TIG, MIG, and Flux-Cored welding
Remote distance limited only by the length of the welding leads

Important: The Big Blue 800 Duo Air Pak must be paired with a Miller ArcReach feeder or ArcReach Stick/TIG remote to get the full benefits of this feature.

Integrated Rotary Screw Air Compressor

This machine includes an Ingersoll Rand® 60 cfm screw-type compressor with a 100% duty cycle, giving you dependable compressed air whenever you need it. The compressor is designed for continuous use and includes an automatic shutdown feature based on oil temperature to help protect the system.

The onboard air supply is ideal for:

With welding power and compressed air in one machine, crews can work more efficiently and reduce the need for additional equipment on the trailer.

Auxiliary Generator Power

The Big Blue 800 Duo Air Pak also functions as a powerful jobsite generator. The AC generator supplies 27,000 peak watts and 20,000 continuous watts of three-phase power.

For single-phase applications, the machine provides up to 15,000 peak watts and 12,000 continuous watts for operating:

This makes the machine an excellent all-in-one solution for remote work where utility power is not available.

Engine and Jobsite Durability

The Deutz® diesel engine is built for dependable performance in tough environments. Its liquid-cooled, 4-cylinder design delivers strong output while maintaining efficient operation.

Additional engine and durability features include:

EPA Tier 4F compliance
65.7 hp output
25-gallon fuel tank for extended runtime
Engine weld speed of 1800 RPM
Engine idle speed of 1350 RPM
Cold weather starting aids with engine block heater and glow plugs
Quiet operation with a sound rating of 71.3 dB at idle and 78.9 dB at weld
Heavy-duty construction for harsh industrial environments

These features help the machine stand up to demanding welding conditions while improving reliability and serviceability.

Superior Arc Performance and Control

The Miller Big Blue 800 Duo Air Pak is designed to provide excellent arc quality across multiple welding processes. It includes advanced control features that help welders achieve better results with less effort.

Performance and control features include:

Four preset DIG settings for Stick welding
Hot Start™ for improved arc starts
Lift-Arc™ DC TIG capability
MIG/FCAW arc performance
Dynamic DIG technology for smoother, more consistent arc control
Thermal Overload Protection to help prevent machine damage
Auto Remote Sense™ (ARS) to detect a remote control automatically
Low OCV Stick (VRD) to reduce open-circuit voltage to 30 volts when not in use
Adjustable Hot Start™
Output contactor control
Automatic idle

Dynamic DIG technology is especially valuable because it automatically adjusts current to clear a short more smoothly than conventional DIG settings. This helps improve arc stability and weld consistency across different materials and fit-ups.

Typical Applications

The Miller Big Blue 800 Duo Air Pak 907752 is commonly used for:

Its combination of welding power, compressed air, generator output, and ArcReach remote capability makes it a strong choice for crews that need maximum versatility on the job.

Built for Maximum Productivity

The Big Blue 800 Duo Air Pak is built for contractors and crews who need to do more with fewer machines. By combining welding, air power, and generator output in one unit, it helps reduce trailer space, simplify logistics, and improve productivity.

Additional advantages include:

Dual or single-operator welding modes
Up to 400 amps per side in dual-operator mode
Up to 800 amps in single-operator mode
Independent compressor control for fuel savings
Remote control capability without cords
Rugged construction for demanding environments
Reduced equipment transport and maintenance costs
Easy handling with fork pockets and a standard lift eye

Why Buy a Used Miller Big Blue 800 Duo Air Pak 907752?

Buying a quality used machine gives you access to premium industrial performance at a lower cost. Every used welder we offer is carefully inspected to help ensure dependable operation and long-term value.

Benefits include:

Significant savings compared to buying new
Professionally inspected used welding equipment
Dual-operator productivity
Integrated welding, air compressor, and generator
ArcReach remote control capability
Excellent value for industrial contractors and fabrication businesses

Why Buy From Us?

We specialize in high-quality used welding machines from trusted manufacturers. Our goal is to provide dependable equipment that delivers strong performance in demanding work environments.

Whether you’re expanding your fleet or replacing an older machine, the Miller Big Blue 800 Duo Air Pak 907752 offers the power, flexibility, and durability professionals need for serious welding and jobsite work.