Item # 33970 BRAND: Eastwood

Eastwood 140 Amp MIG Welder

With the latest inverter technology and a Smart Wire Feed feature, Eastwood’s MIG 140 produces precision welds on lightweight metal from 24-ga to 3/16-in thick.

With the latest inverter technology and a Smart Wire Feed feature, Eastwood’s MIG 140 produces precision welds on lightweight metal from 24-ga to 3/16-in thick.

Eastwood 140 Amp MIG Welder is rated 4.8 out of 5 by 182.
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With the latest inverter technology and a Smart Wire Feed feature, Eastwood’s MIG 140 produces precision welds on lightweight metal from 24-ga to 3/16-in thick.

3 year Warranty Included

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Eastwood 140 Amp MIG Welder

Product Overview:

Description

Packed with the latest IGBT inverter technology and quality features, the Eastwood MIG 140 delivers precision welds on sheet metal and other light steel and stainless steel projects up to 3/16-in. thick. This versatile 140-Amp welder runs on conventional 120V household power (or by generator) and weighs less than 25-lbs for go-anywhere portability.

Experienced welders as well as beginners will appreciate the MIG 140’s Smart Wire Feed feature that ramps up wire speed at the beginning of the weld to prevent excess material. Its metal drive motor ensures smooth operation. A tack-weld setting allows for perfectly timed short pulses, perfect for plug welds and spot welds. It also includes 2T and 4T controls for greater precision and comfort, especially for long welds.

The MIG 140 includes a Tweco-style torch that uses commonly available consumables. It doubles as a flux-core welder for gas-free welding and can also weld aluminum with the addition of an optional spool gun (Eastwood Item # 20172). With all these great features, the MIG 140 matches the overall performance of more expensive welders. And it’s all backed up by Eastwood’s 3-year warranty and lifetime tech support.

Eastwood MIG 140 Features:

  • Feature-packed yet easy-to-use welder for light metal
  • Latest IGBT inverter technology makes it lightweight and precise
  • Smart Wire Feed feature prevents excessive wire at the start of the weld
  • Tack setting delivers precisely timed tack welds to prevent overheating
  • 2T & 4T settings offer greater precision and comfort
  • Tweco-style torch uses commonly available consumables for convenience
  • Optional spool gun allows for welding aluminum
  • Operates on standard 120V household or generator power
  • 30% duty cycle at 90 amps (60% at 65 amps)
  • Backed by Eastwood's no-hassle return policy and 3-year warranty

Warranty

3 year Eastwood warranty

Specifications

Rated Electrical Input: 120 VAC; 24 AMP
Required Breaker Size: 20 amp
Power Voltage: 1 Phase, 120VAC, 50/60 Hz
Power Cord Receptacle Plug: NEMA 5-15P
Max Voltage at No Load: 56 V DC
Rated Duty Cycle:

120V: 30% @ 90 Amps

120V: 60% @ 65 Amps

120V: 100% @ 50 Amps

Torch Consumables: Tweco style nozzle and contact tips
Wire Feed Rate (IPM/Inches Per Minute):

120V: 80 - 314 IPM

Wire Sizes:

0.023-in. (0.6mm) – 0.035-in. (0.9mm) mig wire

0.030-in. (0.8mm) – 0.035-in. (0.9mm) flux core wire

Welding Wire Spool: 4-in. and 8-in. spool, up to 11 lbs
Maximum Welding Thickness - Steel: 3/16-in.
Output Current Range:

120V: 30 - 140 Amps

Weight: 24.15 lbs (11 kg)
Overall Dimensions: 18-in. X 8.5-in. X 13.25-in.

Shipping & Handling

Ships via UPS

In the Box

Contents

  • MIG 140 Welder
  • Gas Regulator with hose
  • 8.5-ft Cable and Ground Clamp
  • MIG Torch, Nozzle, 0.023-in. (0.7mm) Contact Tip and 8-ft. Cable
  • Contact tip wrench
  • Additional contact tips (.030-in. and .035-in.)
  • Instruction Manual
  • 3-Year “No Hassle” Warranty

Guides & Accessories

Instructions

Click here to download product instructions PDF

Safety Information

Welding fumes and gasses can be hazardous to your health. Arc Rays can injure your eyes and burn your skin. Wear correct eye, ear, and body protection. Do not touch live electrical components! Keep your head out of the fumes. Wear breathing protection when welding.

Accessories

Weld Aluminum with a Spool Gun

Many cars and trucks have aluminum parts, or you may need to weld aluminum for a metal fabrication project, and with a spool gun you can weld 14-gauge to 1/8-inch aluminum. Quickly and easily connect or remove it as needed for working on different parts and panels. The spool gun is sold separately and is a great addition to your MIG 140 and you can check out item 20172 here.

Eastwood MIG 140 Welder

Application Tips

High-Value Welders from Eastwood

This 140-amp MIG welder has everything you need to get started, just add a bottle of shielding gas. It includes a precision metal drive motor, regulator with hose, Tweco-style torch, tips and accessories, modern features and technology. A "Quick Setup" welding chart specifies settings for each material thickness, eliminating guesswork and assuring complete penetration.

The unit is backed by Eastwood's No-Hassle 90-day return policy and industry leading 3-year manufacturer's warranty. We even provide tips and tricks on MIG welding in the Eastwood Garage that will get you started and improve your welding.

Reviews

Rated 5 out of 5 by from MIG140 inverter welder The MIG140 welder , once I’d practiced a bit , honestly made a pretty darn good weld. I’d used Lincoln and Miller commercial welders at work in the past. Just getting the balance between wire size, speed and amperage was all I needed. Affordable with a 3 year warranty too!!👍👨‍🔧
Date published: 2025-02-04
Rated 5 out of 5 by from awesome little welder excellent and smooth operating welder. I purchased this machine while i was in the process of fixing my eastwood mig135 and now that its fixed it just sits because the mig140 is so much smoother. its lighter, has heavier duty drive roller assembly and has some added functions compared to the old machine. i love it and it works perfectly for sheet metal and metal up to 1/8"( can do up to 3/16") but if im doing something around that thickness i'll just plug in my 250amp welder. awesome welder and definitely a great addition to any garage that does light fabrication.
Date published: 2024-11-11
Rated 5 out of 5 by from Great little workhorse Awesome little welder. Perfect for large or small projects that are no larger than 3/16” material
Date published: 2024-11-02
Rated 5 out of 5 by from Just what I needed Works really well. I had never welded before and while the first couple of hours were challenging, this machine made it a breeze after that and the settings were spot on for my material (~18 gauge mild steel). Now I'm flying through welds! The fact that it came with a spool of wire and a wire brush was a nice surprise - I bought wire thinking this wouldn't come with any. It also came with everything I needed to attach a C25 cylinder. The 3 year warranty is the icing on the cake. I went from being terrified of welding to absolutely loving it in a very short period of time thanks to this machine.
Date published: 2024-10-28
Rated 5 out of 5 by from Perfect, lightweight, 110 This little welder works great right out of the box. I was in the market for a lightweight, 110 specific, mig welder and this one does not disappoint. Excited to see what all I can use this thing for in the future.
Date published: 2024-10-20
Rated 5 out of 5 by from MIG140 Excellent welder for the beginner. Quality piece with decent price.
Date published: 2024-10-09
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Questions & Answers

Is there free shipping on this unit

Asked by: Barry
No there is not
Answered by: Anonymous
Date published: 2024-07-17

How much is shipping cost

Asked by: Scoop
Depends on Zip code and State
Answered by: Anonymous
Date published: 2024-08-05

Will this work to weld on leaf spring perches on 3” tube rearend? Is it better to flux or mig if I was to?

Asked by: Kinghs95
New and improved features and technology to weld sheet metal up to 3/16". MIG
Answered by: Anonymous
Date published: 2024-07-17

What country is this machine from

Asked by: Falcon
This welder is made in China by one of our long term partners.
Answered by: Nick BC
Date published: 2024-09-23

Can i purchase a Mig 135 still?

Asked by: Jscottsr74
No, the MIG 135 has been discontinued and replaced by this welder. We now also offer the #58015 MIG 90 for those that don't need quite need all the power of a MIG 140.
Answered by: Nick BC
Date published: 2024-07-17

Is the use of pure argon gas a must when using the spool gun for aluminum? What happens if one uses the 75-25% gas on aluminum?

Asked by: Keith
Yes, you need to use 100% Argon for Aluminum to get proper shielding effect. If you use 75/25 your results will be horrible, as if you were welding with no gas at all.
Answered by: Nick BC
Date published: 2024-11-05

Well, this welder weld 20 gauge steel fenders sheet metal

Asked by: Greg Ritter
Yes, this welder is excellent for sheet work and included the wire you need to get going, all you need to do is go to your local weld supply store and get a 75% A r/ 25% CO2 gas bottle.
Answered by: Nick BC
Date published: 2024-08-26

Does this welder come with power cord to hook up to power or do you have to buy separate 120v?

Asked by: Chief 55
The welder comes with an installed 5.9ft power cord and NEMA 5-15P plug end.
Answered by: Nick BC
Date published: 2024-05-14
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Eastwood 140 Amp MIG Welder
Reg. $399.99 Sale $349.97 Save $50.02
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