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Home TIG Welders For Sale MILLER SYNCROWAVE 400 AC/DC TIG AND STICK WELDER COMPLETE W/WIRED FOOT CONTROL (951000004)
MILLER DELTAWELD 500 MIGRUNNER W/SINGLE INTELLX FEEDER (230/460V) (951814)
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LINCOLN ASPECT 230 AC/DC TIG WELDER WATER COOLED ONE-PAK (K4342-1)
LINCOLN ASPECT 230 AC/DC TIG WELDER WATER COOLED ONE-PAK (K4342-1) $5,256.00

MILLER SYNCROWAVE 400 AC/DC TIG AND STICK WELDER COMPLETE W/WIRED FOOT CONTROL (951000004)

$9,312.00

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Description

The Miller Syncrowave 400 offers single or three phase power and features a 30% duty cycle at 400 amps. This machine comes with Auto-Link technology that automatically links the power source to primary voltage being applied (208/240/480). The AC squarewave welding current of the Syncrowave 400 automatically removes the layer of oxide which is necessary for producing high-quality aluminum welds. The Syncrowave 400 compensates for power fluctuation without changing your welding parameters – line voltage compensation works on fluctuating power +-10 percent. Miller’s fan-on-demand technology operates the power source only when needed, reducing noise and energy use. The Syncrowave 400 comes with an Arc Timer/Cycle Counter that records actual welding time and number of arc starts, which is great for estimating job costs.

The Syncrowave 400 is easy to use – the intuitive user interface is simple to understand, making it easy to adjust parameters, and means less time training new employees. The Pro-Set button gets to factory preset parameters with one touch of a button. The AC balance control provides adjustable oxide removal which is essential for creating the highest quality aluminum welds, the AC balance can be adjusted from 60-80%, and the Pro-Set is defaulted to 68%.. The Syncrowave 400 comes with Pulsed TIG, which can increase puddle agitation, arc stability, and travel speeds while reducing heat input and distortion. This welder comes with DIG control that allows the arc characteristics to be changed for specific applications and electrodes. Lower the DIG setting for smooth running electrodes like 7018, and increase the DIG setting for stiffer, more penetrating electrodes like 6010. The Syncrowave 400 also offers Hot Start which is an adaptive control that provides positive arc starts without sticking.

Features
• Auto-Link
• AC Balance Control
• Blue Lightning HF Arc Starts
• Lift-Arc Start
• Auto-Postflow
• Pro-Set
• Arc Timer/Cycle Counter
• Line Voltage Compensation

Quick Specs
• Input Power: 208/240/480 V | 1 or 3-Phase Power
• Amperage Range: 5-400 Amps
• Thickness Capability: 1/2″ Steel | 3/8″ Aluminum
• Duty Cycle: 30% @ 300A | 60% @ 210A
• Weight: 131 lbs (Power Source) | 211 lbs (With Cooler/Cart)
• Dimensions: 29.4″ H x 15″ W x 24.6″ D (Power Source) | 43.9″ H x 20.5″ W x 36.3″ D (With Cooler/Cart)

Comes Complete With
• Syncrowave 400 Power Source
• 8 Foot Power Cord (No Plug)
• Running Gear
• Coolmate 3S Cooler
• Weldcraft W-375 TIG Torch Kit
• 20 Ft Wired Foot Control
• Flowmeter/Regulator | Gas Hose | TIG Torch Connector
• Work Clamp with Cable and Dinse Connector
• 4 Gallons of Coolant
• Owner’s Manual

Brand Miller
SKU IMIL20200032
MPN MIL951000004
Mfgs MPN 951000004
UPC 715959702492
Prop65 Yes
Material Aluminum, Mild Steel, Stainless Steel, Titanium
Process Stick, TIG
Max Amperage Output 400 Amps
Usage Heavy Industrial, Industrial, Light Industrial
Phase Both
Manufacturer’s Warranty 3 Years
Polarity AC/DC
Duty Cycle 60%
Duty Cycle 60% @ 300A
Portability 211 lbs
Skill Level Career Welder
Input Voltage 208, 220, 230, 240, 460
Discontinued Product No
Shipping & Delivery
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wd-ship-2

Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

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