MST 140i Multi-Process Welding System

Buying Options

The Firepower MST 140i and MST 180i 3-in-1 machines come complete with all the necessary MIG & Stick components which gives even a beginner the capability to weld immediately, right out of the box. Both machines feature MIG, Stick, and TIG processes in a unit that weighs 33 pounds. The MST’s both come with a Quick Start guide that walks you through the machine set-up in four simple steps. The MST 140i uses the 115 VAC, which allows you to weld virtually anywhere. The MST 180i comes with more power, using 208/230V and a maximum output of 180 Amps. The MST 180i is Spool Gun capable for Aluminum MIG welding. With the MST 140i and MST 180i you can be welding like a pro in no time.

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Part No. Where to Buy Description
1444-0870 MST 140i, Multi-Process Welding System
  • Part No.: 1444-0870

    Description: MST 140i, Multi-Process Welding System

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Product Details and Features

Firepower MST 140i Power Supply, Firepower 140 Amp MIG Gun, Firepower Flow Meter Regulator / Gauge & Hose, Electrode Holder & Ground Clamp, 2 Drive Rolls and Contact Tips, 15-20 Amps Power Adapter, Shoulder Strap, and CD with Multi- Language Operating Instructions

Farms/Ranches, Auto Applications, On-Site Repair – Does not work with Spool Gun

Part No. Where to Buy Description
1444-0870 MST 140i, Multi-Process Welding System

Machine Specifications

Maximum Output 140 Amp
MIG (GMAW/FCAW) Welding Output @104 ̊F (40 ̊C) 140A / 19V @ 15% Duty Cycle
90A / 18.5V @ 20% Duty Cycle
STICK (SMAW) Welding Output @104 ̊F (40 ̊C) 90A / 23V @ 15% Duty Cycle
80A / 23.2V @ 35% Duty Cycle
TIG (GTAW) Welding Output @104 ̊F (40 ̊C) 140A / 15.6V @ 15% Duty Cycle
100A / 14V @ 20% Duty Cycle
Current Range 10–140 Amp
MIG Welding Voltage Range 14.5 – 19 Volt
Wirefeed Speed Range 90 – 390 IPM (2.3 – 9.9 m/min)
Nominal OCV Volt/DC 53 Volt
Maximum Plate Thickness 1/8" (3.2 mm)*

*30 Amp service required to obtain 3/16"