2019 Miller Big Blue 500 Pro Welder / Generator – Kubota Diesel

This 2019 Miller Big Blue 500 Pro Engine-Driven Welder/Generator is a heavy-duty industrial welding and power solution designed for structural steel, heavy construction, mining, pipeline work, equipment repair, and demanding field-service applications. With 2,120 operating hours, this unit combines professional-grade multiprocess welding performance with substantial auxiliary generator power in one rugged, field-ready package.

Powered by a highly reliable 48.9 HP Kubota V2403 4-cylinder turbo diesel engine, the Big Blue 500 Pro provides up to 500 amps of DC welding output and supports Stick, TIG, MIG/FCAW, and carbon arc gouging. Simultaneously, it delivers up to 20,000 watts of continuous three-phase generator power, making it an exceptional asset for remote jobsites. Explore our complete inventory of Miller equipment, or view our full range of diesel generators and power equipment.

Equipment Overview

Why This Welder Stands Out

• 100% Duty Cycle: Weld continuously at rated outputs (up to 500 Amps) without waiting for the machine to cool down.
• Dual-Purpose Powerhouse: Functions as a premium multiprocess welder and a massive 20,000 W continuous 3-phase generator.
• Carbon Arc Gouging: Easily handles heavy-duty carbon arc gouging applications up to 3/8 in (9.5 mm).
• Reliable Kubota Diesel: Equipped with a proven 48.9 HP Tier 4 Final engine, renowned for its long lifespan in mobile service rigs.
• Automatic Engine Protection: Features a built-in shutdown system for low oil pressure, high coolant temperature, and low fuel to prevent costly damage.
• Extended Runtime: A large 25-gallon fuel tank keeps you welding and powering tools all day without interruption.

Welding Performance

• Stick/TIG Output Range: 20–500 A DC
• MIG/FCAW Output Range: 14–50 V DC
• Maximum Open-Circuit Voltage: 92 VDC
• Carbon Arc Gouging Capacity: Up to 3/8 in (9.5 mm)
• Rated Welding Output:
  • 400 A @ 36 V – 100% Duty Cycle
  • 450 A @ 38 V – 100% Duty Cycle
  • 500 A @ 40 V – 100% Duty Cycle

Generator Power

This substantial auxiliary power capability allows the machine to easily run grinders, lights, pumps, plasma cutters, and other jobsite equipment simultaneously while welding.

• Three-Phase Output: 20,000 W (Continuous) / 27,000 W (Peak)
• Single-Phase Output: 12,000 W (Continuous) / 15,000 W (Peak)

Engine Specifications

• Make/Model: Kubota V2403 (Turbocharged, Liquid-cooled, 4-Cylinder)
• Engine Power: 48.9 HP
• Fuel Type / Capacity: Diesel / 25 gal (95 L)
• Emissions: EPA Tier 4 Final
• Operating Speeds: Idle Speed: 1,350 RPM / Welding Speed: 1,800 RPM

Dimensions & Weight

• Length: 69.5 in
• Width: 28.5 in
• Height: 46 in
• Net Weight: 1,750 lb

Ideal Applications

The Miller Big Blue 500 Pro combines professional welding output, dependable Kubota diesel power, and massive auxiliary generator capability. It is highly recommended for:

• Heavy construction and structural steel fabrication
• Mining maintenance and heavy equipment repair
• Mobile service trucks and maintenance rigs
• Process piping and industrial fabrication
• Remote field welding, repair operations, and disaster recovery

Ready to upgrade your field service capabilities? Contact us today for pricing, financing, and nationwide shipping on this Miller Big Blue 500 Pro, and be sure to explore our complete inventory of welders, generators, compressors, and heavy equipment.