Forney® X-Series 140 MPx

The Forney® 140 MPx is a 120V TruSet™ multi-process welder that lets you handle MIG, flux-cored, stick, and DC TIG welding with one compact machine. TruSet™ technology, a next-generation, large bright display, and a simple two-knob interface help you dial in usable settings fast, while up to 140 amps of output lets you weld 24 ga through 1/4 in. mild steel in a single pass. Backed by a 3-year warranty and Forney® Industries’ 90+ years of welding experience, this TruSet™ multi-process welder is built for DIYers, fabricators, and mobile repair crews who want MIG, flux-cored, stick, and DC TIG flexibility from a single 120V machine.

Key features & benefits:

• TruSet™ setup assist delivers simple, quick setup for MIG and Flux-Cored processes by letting you choose your material while the welder provides ideal settings, so you can stop guessing and start welding with a smooth, consistent arc.
• Expert-Tech® support gives you a direct line to Forney’s technical team for setup, troubleshooting, and parts; all from real welders based in Colorado, USA.
• 3-year warranty delivers long-term assurance so you can count on the machine for ongoing projects, maintenance, and repair work.
• Next-generation, large bright display with big readout delivers a panel that is easy to read in dim garages or bright daylight so you can see your TruSet™ values at a glance.
• 140 amp max output with 30% duty cycle at up to 90 A delivers enough power and arc time so you can weld 24 ga through 1/4 in. mild steel in a single pass for MIG and flux-cored, and run stick up to 1/8 in. on typical repair jobs.
• True multi-process machine (MIG, flux-cored, stick, DC TIG) delivers four welding processes in one package so you can jump from MIG or flux-cored fabrication to stick repair or DC TIG detail work without buying separate welders.
• 120V input power delivers plug-and-play operation so you can weld anywhere you have a standard household outlet or compatible generator.
• Generator-capable (4,000 W minimum) delivers flexibility so you can weld in the field or on remote jobs with a properly sized 4,000 W generator with no low-idle and 5% THD max.
• CSA certified to meet strict safety and performance standards ensuring reliability and your safety in any work environment.
• Compact, lightweight inverter with handle and carry strap delivers portable performance so you can bring the welder, leads, and torch to the work instead of moving material.
• Runs solid wire and flux-cored wire delivers flexibility so you can MIG weld with gas for clean beads in the shop, then switch to gasless flux-cored outdoors when wind or portability matters.
• Two-knob interface delivers simple control so you can adjust voltage and wire feed or amperage quickly and repeat settings across different jobs.
• 4 in. and 8 in. spool capability with metal wire drive delivers the capacity and durability you need for small projects or longer production runs.
• Euro-connect 10 ft MIG torch and Tweco®-style consumables deliver easy torch removal, storage, and change-over plus access to industry-standard tips, diffusers, and nozzles so you can keep welding with widely available parts.

Technical Specifications:

• Input voltage: 120 VAC, 50–60 Hz, single phase
• Input current: 14.3 A
• Max duty cycle: Stick 30% at 80 A; TIG 20% at 110 A; MIG 30% at 90 A
• Wire feed speed: 80–200 inches per minute
• Output voltage (CV MIG): 13–20 V
• Output current: 10–140 A, process-dependent
• Processes: MIG (GMAW), Flux-Cored (FCAW), stick (SMAW), DC TIG (GTAW), TruSet™ MIG, TruSet™ Flux-Cored
• TruSet™ Technology: Provides optimal settings for MIG and Flux-Cored processes based on your materials for fast and easy setup.
• Wire diameter: 0.024–0.035 in. solid or flux-cored
• Single-pass plate thickness: 24 ga–1/4 in. mild steel
• Electrode diameter (stick): 3/32–1/8 in.
• Power supply type: Inverter DC
• Generator requirements: 4,000 W continuous output, no low-idle, 5% THD max
• Input power cable length: 7 ft
• MIG torch: 10 ft Euro-connect torch, removable
• Ground cable length: 8 ft copper ground clamp and lead
• Electrode holder length: 8 ft copper
• Spool size compatibility: 4 in. and 8 in.
• Wire drive construction: Durable cast aluminum
• Spool gun capable: No
• Foot pedal capable: No
• Gas connection: 5/8–18 RH thread (for MIG only)
• IP rating: IP21S
• Certification: CSA listed
• Warranty: 3 years

In real-world use, the Forney® 140 MPx plugs into a standard 120V outlet but still delivers up to 140 amps of output, allowing you to weld common mild steel from thin 24 ga sheet to 1/4 in. plate in a single pass. The 30% duty cycle offers practical arc-on time for repeated welds on brackets, angle iron, and plate. TruSet™ technology and the bright display simplify setup, especially when switching between MIG, flux-cored, stick, and DC TIG, while the Euro-connect torch and removable leads keep storage and change-over easy. Combined with 4 in./8 in. spool support and generator capability, the 140 MPx is a strong multi-process welder for home, shop, and mobile repair work.

Ideal for:

• Home and garage fabrication on brackets, racks, frames, and small structural projects up to 1/4 in. steel.
• Farm and ranch repairs on gates, implements, and equipment where MIG, flux-cored, or stick may all be needed depending on conditions.
• Mobile repair, light industrial maintenance, and jobsite work using a 120V circuit or compatible generator.
• DIYers and students who want one TruSet™ machine to learn MIG, flux-cored, stick, and DC TIG without buying a separate welder for each process.

What’s included:

• Forney® 140 MPx multi-process welder with 7 ft power cord
• 8 ft ground clamp and lead
• 10 ft Euro Connect MIG gun
• 8 ft stick electrode holder and lead
• Gas regulator and 6 ft hose
• 15 to 20 amp plug adapter
• Quick Start Guide (English, Spanish, French)
• Hang tag
• Nylon carry strap
• Expert-Tech® magnet
• 0.030 in. contact tip
• 0.035 in. contact tip
• 0.030–0.035 V / 0.030–0.035 K drive roll (installed)

Recommended accessories:

• Liner – ITEM# 101202, MIG gun liner for 0.023–0.035 in. wire, sized for Euro-connect guns to help maintain smooth wire feed and reduce burnback.
• Diffuser – ITEM# 85793, Tweco®-style diffuser for stable gas flow and consistent arc performance with compatible MIG guns.
• Contact tip – ITEM# 60170, Tweco®-style 0.024 in. copper MIG contact tip, precision-machined for smooth wire feeding and consistent starts.
• Contact tip – ITEM# 60171, Tweco®-style 0.030 in. copper MIG contact tip, compatible with Forney® Easy Weld® and other Tweco-style MIG guns.
• Contact tip – ITEM# 60172, Tweco®-style 0.035 in. copper MIG contact tip, 4-pack, designed for reliable contact and clean, stable arcs.
• Contact tip – ITEM# 60173, Tweco®-style 0.045 in. copper contact tip for light to medium duty MIG welding where a standard 1 in. tip is required.
• Nozzle – ITEM# 85336, Tweco®-style nozzle (21-50), 1/2 in. bore copper nozzle for general MIG and flux-cored welding applications.
• Nozzle – ITEM# 85337, Tweco®-style nozzle (21-62), variant designed for consistent shielding and heat resistance in everyday welding.

Warranty & support:

• Warranty: 3 year
• Expert-Tech® support: Access to Forney’s Colorado-based team of real welders for help with setup, troubleshooting, and repair questions throughout your equipment’s life.

Forney®, Easy Weld®, TruSet™ and Expert-Tech® are trademarks of Forney® Industries®, Inc. and may be registered in the United States and/or other countries. Forney® Industries green color is a federally registered trademark and cannot be reproduced unless authorized by Forney® Industries.

3 Year

• Forney Inverter Based Machines: All internal electrical components that cannot be accessed without removing the cover.

For more warranty information, visit:Forney Industries Warranty Information