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Millermatic® 140 115 Volt 907311:
ID: 907311
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Millermatic 140 MIG Welder (115 Volt)

An out-of-the-box solution for the demanding light duty user or home hobbyist who wants the advantages of a MIG welder but refuses to compromise on quality or capability. The easy-to-use Millermatic 140 plugs into any 115-volt, 20-amp receptacle and delivers the output to weld materials up to 3/16 in (4.8 mm) in a single pass. The Millermatic 140 weighs only 60 pounds and offers improved performance throughout its range. Rugged, compact construction and true professional features deliver the reliability that make short work of most light fabrication, auto body, repair and maintenance projects.


  • Light Industrial Applications
  • Light Fabrication
  • Maintenance and Repair
  • Farm and Ranch
  • Auto Body
  • Home
  • Flux Cored (FCAW) (gas and self-shielded)
  • MIG (GMAW)

  • Durable cast aluminum feedhead incorporates dual-groove quickchange drive roll and spring-loaded tension arm with calibrated tension knob, all designed to make set up easier and faster.
  • NEW! Smooth-Start patent-pending technology provides a smooth, spatter-free start. It’s the best-starting machine in the small MIG machine category. No pop gun starts and no spatter to clean up.
  • Thermal overload protection shuts down unit and activates over temperature light if airflow is blocked or duty cycle is exceeded. Automatically resets when fault is corrected and unit cools.
  • Miller’s exclusive “Tip Saver” short circuit protection shuts down output when tip is shorted to the work. Extends contact tip life and protects internal components from damage. Trigger reset permits quick reset at torch rather than unit.
  • Self-resetting motor protection circuit eliminates the need to find and replace fuses.
  • Uses 4 or 8 in (102 or 203 mm) spools and can be set up to weld with wire sizes .024–.030 in (0.6–0.8 mm) mild/stainless steel and .030 –.035 in (0.8 – 0.9 mm) flux cored.
  • Easy access to output studs provides convenient polarity changeover when changing from solid or flux cored wires.
  • Standard built-in solid-state contactor circuit makes wire electrically “cold” until trigger is pulled, making the unit safer. It’s also easier to position torch to work before starting weld.
  • Semiautomatic constant voltage wire welding package is capable of welding 24 gauge up to 3/16 in (0.8 – 4.8 mm) mild steel.

    Comes complete with:
  • Power source
  • 6 ft (1.8 m) power cord and plug
  • 10 ft (3 m), M-10 MIG gun and cable assembly
  • 10 ft (3 m) work cable and clamp
  • Smith Argon and AR/CO2 mix regulator/flow gauge with hose
  • Spool of Hobart .024 in (0.6 mm) solid wire
  • Two contact tips for .024 in (0.6 mm) wire and two contact tips for .030 in (0.8 mm) wire
  • Dual groove quick-change drive roll for .024 in (0.6 mm) or .030/.035 in (0.8/0.9 mm) wire
  • Factory-installed gas solenoid valve
  • Set-up and operation video
  • Information/settings chart
  • Material thickness gauge

    Quick Specs: Millermatic 140
  • Input Power Requires 1-Phase Power
  • 115 V, 20 Amps 60 Hz
  • Rated Output 90 A at 18 VDC, 20% Duty Cycle
  • Output Power Range 30 - 140 Amps
  • Weight 60 lb (27.3 kg)

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