Longevity Migweld 140: Our Comprehensive MIG Welder Review

Searching for a MIG welder that possesses industrial features at an economical price? Look no further than the Longevity Migweld 140. It is ideal for the beginner, hobbyist, and the professional welder. The Longevity Migweld 140 is one of the most functional machines on the market. It can work with aluminum, using the optional spool gun, along with most exotic metals.

Overview of the Longevity Migweld 140

The company equipped the welder with a control panel that is straightforward when being put to work. You may control the variable adjustment dials to tweak the machine to the preferred setting. This allows you to take charge in your own project, and for the machine to work to your specifications.

Modern technology has made many advancements, including in the realm of welding. The Longevity Migweld 140 includes reliable transformer technology as part of the unit itself. Transformer technology has shined through in welding, for being both trustworthy and consistent.

Included with the Longevity Migweld 140 is a mild steel 1-pound welding wire roll, welding mask, chipping hammer, welding brush, and a gas regulator. After you unpack your machine, simply plug it in to any surrounding 110V outlet and you are ready to weld!

Longevity Migweld 140: Specifications

  • Part Number: 880131
  • Rated Input: 110v 50/60hz 1 phase
  • Spool Gun Capable: Yes, with Optional SpoolGun140
  • Technology: Inverter Based
  • Duty Cycle: 20% @ 90A/18V
  • Stick Welding Capable: NO
  • Wire Range .025”-.030” (0.6-0.8mm) solid steel
  • Flux-Cored: .030”-.035” (0.8-0.9mm)
  • Power Source: Corded-Electric
  • Width: 14.5”
  • Height: 9.6”
  • Length: 16”
  • Weight (unit only): 54lbs
  • Manufacture Warranty: 1 year, parts and labor

Included with the purchase of the Longevity Migweld 140:

  • MIG Torch with contact tips (3 meters)
  • Earth/Ground Clamp (3 meters)
  • Regulator Flow Gauge
  • .030 and .035 contact tips
  • Chipping Hammer and Steel Brush
  • 2lb Spool of Mild Steel
  • Gas Line
  • Welding Mask Owner’s manual with installation, operation and maintenance guidelines


Usability of the Longevity Migweld 140

Easy to Understand

The Longevity Migweld 140 allows you to switch out the torches to your preferred guns. The panel provides clear visibility, when needing to adjust the settings flawless ease. With the variable adjustment dials, you have the availability to tweak the machine to your preferred setting. Giving way for you to adjust the machine to your specifications, providing you a quicker and precise weld with every use.

Power with Portability

Looking to weld for a duration of time, in one session? The Longevity Migweld 140 is perfect for such a task! It comes standard with a thermal overload protection, should you reach your duty cycle. This saves on any possibly damages by safely shutting the machine down for a short period of time. Once the machine is cooled down, you can easily start it up and continue on your way.

Convenient to use with a standard 110V power outlet source; you may simply plug it in and begin on your welding job. The auto post flow will methodically and harmlessly cool your torch by naturally passing the correct amount of gas through. By doing such, this gives you a way to shield the fluid puddle until it cools down.

The reliable transformer technology, presented by Longevity, has been made evident over the decades to be both long-lasting and dependable. All of this is packed into a total weight of 54lbs. While the machine itself weighs in at 40lbs.


The Longevity Migweld 140 is a phenomenal welder at a cost-effective price. If purchasing a brand new one, it comes with a one-year warranty direct from the manufacturer. This remarkable machine costs around $370. The spool gun, which allows you to weld aluminum, along with other add-ons do come at an extra price.

Use caution if you are purchasing it as being used or refurbished. Ensure that all is in great working condition. Also, you will need to inspect as to whether the seller will offer a warranty. If it is refurbished, some sellers do not offer warranties.  A warranty, on such an amazing machine, provides comfort in case you ever need a repair or if it needs a replacement part.


Features of the Longevity Migweld 140

  • Tweco Torch
  • Welding Mask
  • Gas Line
  • 300A Ground Cable
  • Chipping Hammer and Steel Brush
  • Regulator Flow Gauge
  • 1lb Spool of Mild Steel
  • One-year warranty, when purchased brand new.

Pros of the Longevity Migweld 140

Here are just some additional reasons why you will enjoy owning the Longevity Migweld 140:

  • Easy Set-Up: When first utilizing the Longevity Migweld 140, you will notice that the company made the machine ready to use instantaneous. With an easy set-up through the style connectors, you will notice how quick and efficient it is to switch torches at any point with your preferred gun.
  • Thermal Overload Protection: If you reach your duty cycle limit, while welding for quite a time, the thermal and overload protection will turn on. This safely shuts down your machine, to allow for the machine to cool down, to avoid any damaging. Upon cooling, you go back to work on your welding project.
  • Powerful, Reliable, Efficient Technology: Contemporary technology includes strong and steady transformer ingenuity within the machine itself. Offering portability, and affordability, at the tip of your gloves.

Cons of the Longevity Migweld 140

  • The wire feed mechanism can be a bit of a hassle. Over time, the tensioner needs additional turns on the wing nut, to maintain the tension.
  • Both the pressure gauge and the flow gauge can stop working. This can cause an issue with the gas regulator.
  • Depending on the part, it may be impossible to purchase a replacement to repair the machine if ever needed.

Final Thoughts

The Longevity Migweld 140 is a strong machine for a temporary weld. It can produce the weld that you need. However, if you are looking for something to stay for the long haul, then you may need to look at a higher-end model.


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