951000126 - Miller Syncrowave 400 TIG Runner Package 600V

Ready-to-Weld Performance for the Master Fabricator

If you are looking for a TIG welder that combines the smooth, familiar feel of a classic Syncrowave with the power to handle the toughest industrial jobs, the Miller Syncrowave 400 Complete Package is your answer. This 600V configuration is built for the professional welder who demands reliability and ease of use. Gone are the days of piecing together a water-cooled setup; this package arrives with everything you need—power source, cooler, cart, foot pedal, and torch—so you can hook up your gas and power and start laying beads immediately.

Welding aluminum is where the Syncrowave 400 truly shines. The arc is stable, crisp, and highly controllable. Thanks to the AC Frequency control, you can dial in a focused arc for tight inside corners or widen it out for a softer profile on outside edges. If you aren't sure where to start, the Pro-Set button is a lifesaver, instantly snapping the machine to the most common settings for speed and quality. It takes the guesswork out of the equation, letting you focus on your torch hand and filler metal. The included RFCS-14 HD foot control is responsive and durable, giving you precise amperage control throughout the weld, from the initial arc strike to the crater fill.

Comfort and endurance are key in production environments. The water-cooled W-375 torch included in this package is designed to stay cool in your hand, even when you are pushing the machine near its 400-amp limit. This means less fatigue and more arc-on time. The Fan-On-Demand cooling system on the power source keeps the shop quieter by only running the fan when the machine actually needs it, reducing the constant drone of background noise. Plus, the heavy-duty running gear makes moving your setup a breeze, with a low cylinder rack that saves your back when swapping out argon tanks.

Whether you are repairing heavy equipment, fabricating custom aluminum structures, or performing critical pipe welds, the Syncrowave 400 gives you the power and finesse required. It handles Stick welding just as capably, digging deep for root passes or heavy plate repairs. This is a welder's machine, designed to make your job easier, your welds cleaner, and your workflow more efficient.