Harbor Freight Tools


Flux 125 Welder

The Flux 125 Welder gives you the benefit of wire welding without the hassle of gas

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IRONTON 45433 at $174.99 Save $55

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Get the benefit of wire welding without the hassle of gas. The Flux 125 Welder is a versatile flux core arc welder (FCAW) specifically designed to use self-shielding flux-cored welding wire. This eliminates the need for gas and regulators that normal MIG welders require. Set-up is easy for gasless flux-cored welding. With variable speed wire control and thermal overload protection, this flux wire welder provides dependable performance in a compact, lightweight package. The Flux 125 welder can weld mild steel from 18 gauge up to 3/16in. thick which makes it ideal for jobs around the yard, shop or house.

  • The perfect welder for outdoor use and on dirty metals
  • Output up to 125 amps
  • Best in class duty cycle: 90A AC @17V, 20%
  • Shielding gas NOT required….no need to buy gas bottles or regulators
  • Trigger activated gun prevents accidental arc flash
  • Compact, portable and lightweight…weighs just 38lbs!
  • Continuous wire feed speed control for optimal welding performance
  • Built in overload protection to prevent overheating

Important Information

  • This item is subject to a 20% restocking fee

63582, 63583, 57798
Accessories Included
Flux core gun with 6ft. long cable, ground clamp with 6ft. long cable, spare contact tips
Amperage (amps)
Duty cycle
90A AC @17V, 20%
Maximum amperage output (amps)
Product Height
14-1/4 in.
Product Length
14-3/8 in.
Product Width
8-1/4 in.
Shipping Weight
37.45 lb.
Thermal Overload Protection (y/n)
Minimum amperage output (amps)
Open Circuit Voltage
Weldable metals
Mild, low alloy steel (not suitable for aluminum or stainless steel)
Welding capacities
18 gauge to 3/16 in. thick (0.047 in. – 0.187 in.)
Wire Size
0.030 in. (0.8mm), 0.035 in. (0.9mm)
Input Voltage
CA Residents
Warning - Prop 65 Info
Note: Specifications are approximate and subject to change

We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Limitations apply.