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Millermatic 350P Aluminum Push-Pull Gun System

Miller Millermatic 350P Aluminum

Top Features

  • Superior Aluminum MIG Welding Performance
  • Synergic MIG and Synergic Pulsed MIG
  • Direct Connection for Miller 10-pin XR-Aluma-Pro and XR Pistol Grip Air-Cooled Push-Pull Guns
  • Processes: MIG (GMAW), Pulsed MIG, Aluminum MIG Welding

First single- or three-phase power Millermatic that's optimized to weld aluminum. Perfect for fabrication, manufacturing, maintenance and repair.

Product Details


Millermatic 350P Aluminum
Amperage Range: 25-400 A
Rated Output: 300 A at 32 VDC, 60% duty cycle
Amps Input at Rated Output, 60 Hz:
  200V 230V 460V kVA kW
3 Ph: 34   30   15   11.6   11.5  
1 Ph: 69   61   30   13.1   11.2  
Wire Feed Speed: Push-Pull Gun: 50-800 IPM (1.3–20 m/min.)
Wire Type and Diameter: Aluminum: .035-, .040- and .047-in. (0.9, 1.0 and 1.2 mm)
Dimensions: H: 34" (863 mm) x W: 19" (483 mm) x D: 41" (1041 mm)
Net Weight: 181 lb (82 kg)
XR-Aluma-Pro Push-Pull Welding Gun (Air-cooled)
Welding Current Rating: 200 A at 100% duty cycle
Wire Diameter Capacity: .030–.047 in. (0.8–1.2 mm) aluminum
Dimensions: H: 5 in. (127 mm) W: 2.5. in (64 mm) D: 17 in. (432 mm)
Net Weight (Gun only): 2.5 lb. (1.1 kg)


Pulsed MIG
Aluminum MIG Welding

Additional Features

Special features

  • Run-in adjustment for better starts
  • Built-in two-minute spot timer
  • Pre-flow and post-flow adjustment
  • View actual welding amperage/voltage during welding, and five seconds after arc has shutoff
  • SharpArc controls welding arc cone width in pulsed MIG welding mode
  • Inductance control customizes weld output

Superior aluminum performance - Direct connection for Miller 10-pin XR-Aluma-Pro™ and XR™ Pistol Grip air-cooled push-pull guns. With Auto Gun Detect, simply pull the trigger for the gun to be used and you’re ready to weld. Note: Not compatible with standard MIG guns.

True torque feed motor push-pull design provides continuous push force to the wire while the gun motor controls the speed at the gun. The motors work together to provide accurate and positive wire feed speed without wire shaving or deformation.

Synergic pulsed welding mode offers the simplicity of single-knob control. The machine will select the correct pulse power based on the wire feed speed (WFS) set by the operator.

Synergic MIG provides communication between power source, feeder and gun. As wire speed increases/decreases, the arc voltage also increases/decreases to maintain a constant welding arc.

Trigger schedule select (SCHD) allows the operator to select the alternative schedule by quickly tapping the gun trigger when not welding. Useful when switching between two welding parameters is needed.

Trigger hold allows the operator to release the trigger while making long continuous welds, reducing hand and finger fatigue.

Jog and purge allow operator to jog the wire, or purge gas lines and preset gas pressure at the regulator before welding.

Fan-On-Demand cooling only operates when needed, reducing power consumption and contaminants inside the unit.

All Product Resources

Options, Accessories and Related Equipment

Related Equipment
XR-Aluma-Pro Push-Pull Welding Gun

Millermatic 350P Aluminum Push-Pull Gun System

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