Harbor Freight Tools


MIGMax™ 140 Industrial Welder with 120V Input

The MIGMax™ 140 Industrial Welder is a compact, lightweight MIG welder that works with or without shielding gas

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Product Overview

The VULCAN® MIGMax™ 140 Industrial Welder is the lightest professional wire feed welder in its class. The compact design and 120v input means you can take this welder almost anywhere and get high quality professional results. The industrial grade cast aluminum drive system easily feeds solid and flux core wire up to 15 ft. and can be set up without tools. The MIGMax 140 is spool-gun ready for welding aluminum (spool gun sold separately). Ready to weld out of the box.

  • Advanced arc starting technology for smooth, spatter-free starts
  • Tool free design for easy process or wire changeover
  • Weighs only 42.00 lb. - lightest in class
  • 120v input for welding anywhere
  • Spool gun ready - no adapter required
  • Industrial grade cast aluminum drive system
  • Inverter technology for highest quality output and maximum efficiency

Replacement Parts in Stock

Call to Order: 1-800-444-3353

View Available Parts

Important Information

  • Oversized item: cannot be shipped to Alaska or Hawaii. This is a clearance item.
  • This item is subject to a 20% restocking fee


Accessories Included
Vulcan 180A MIG welding gun 10 ft., Gas and gas nozzle (1 ea.), cable liner, 0.030 in. contact tips (2 ea.), Work cable and clamp 10 ft., Ar/CO2 flow gauge regulator and hose 6 ft., 2 lb. spool of 0.030 in. Vulcan flux core wire, 2 lb. spool of 0.030 in. Vulcan MIG wire, 0.025 in. & 0.035 in. v-groove drive roll, 0.030-0.035 in. knurled drive roll
Amperage (amps)
30-140 DC
light fabrication, maintenance and repair, auto body, farm/ranch, home projects
Duty cycle
100A / 19.5V / 40% / 20.5A input , 85A / 18.5V / 60%, 75A / 17.75V / 100%
Maximum amperage output (amps)
Product Height
16 in.
Product Length
21 in.
Product Weight
42.00 lb.
Product Width
11 in.
Shipping Weight
69.90 lb.
Thermal Overload Protection (y/n)
Minimum amperage output (amps)
Open Circuit Voltage
Weldable metals
Steel, stainless steel, and aluminum (with optional spool gun)
Welding capacities
Steel: 24 ga. - 5/16 in.; Aluminum (with optional spool gun) 16 ga. - 3/16 in.
Wire Size
0.025 in. (0.6mm), 0.030 in. (0.8mm), 0.035 in. (0.9mm)
Input Voltage
Wire Feed Speed
50 to 500 inches per minute
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.