Lincoln Electric LE31MP Multi Process Welder

Lincoln Electric LE31MP Review

Imagine a multipurpose welder that can accomplish MIG, TIG, Flux-Cored, and even Stick welding in a single go. It seems like an annoying idea, right?

Then behold the mightiest, the Lion of performance forest and king of practical features, the Lincoln 140 mp welder.

Yes, Lincoln Electric LE31MP is probably one of the best multipurpose welding machines you can afford now.

Also, our Lincoln Electric LE31MP review revealed that the unit features extreme versatility, intuitive controls, and portability at the forefront. Hence, professionals and beginner welding men love getting the power unit for their projects.

But what makes it so popular? And is there any fault of the tool that you should be concerned about during the operations?

To know more about these, take some time and read the following parts.

Lincoln Electric LE31MP Review

When it comes to producing superior welding machines both for pros and DIYers, only a handful of manufacturers can match the quality and service of Lincoln Electric.

And lincoln Power Mig 140 mp multi-process welder is no exception to it. Before we jump to the next step, I would like to share a quick video promo about this product. I am sure you will be surprised!

Lincoln Electric LE31MP Review



Here are the best benefits of the Lincoln multiprocess welder device.

Extreme Versatility

There are many quality welding devices in the market. Each can perform MIG, TIG, or Flux-Core welding with the highest expected quality.

Some tools may even perform two types of welding. But the Lincoln mig tig stick welder combo has taken the versatility to the next level.

It can perform everything- MIG, TIG, Spool Gun, Stick, Flux-Cored, and conventional welding. Hence, professionals will get tremendous benefits from the welder. It accomplishes every welding project with an optimal accuracy level. So you get a satisfying finish.

Good Amperage Range

A good quality welding machine should be equipped with the right amperage setting. You will get the same with the Lincoln Electric LE31MP power welding machine.

Lincoln power mig 140 mp comes with a 30-140 AMP range, which suits medium to heavy-duty welding. The 30-140AMP amperage range also works similarly for Spool Gun and FCAW.

So, you get a variety of amperage ranges with the welding device.

For TIG, it offers a 10-120 amperage range, which suits most MIG projects. Therefore, you will get quality MIG operation with it.

LE31MP™ Multi Process Welder Lincoln Electric

High Torque and Powerful Motor

The Lincoln Electric LE31MP has a stealthy motor that enables the device to provide such an extensive amperage range.

Also, its improved drive box mechanism brings the additional torque into play. Therefore, the machine can generate strength and torque to accomplish every welding project.

Excellent Control

Lincoln Electric LE31MP has excellent control with a superbly easy-to-understand panel. Lincoln Electronics have not included many knobs and switches. In fact, the whole control panel is geared with only a few controlling buttons.

So, even if you are a beginner, understanding the panel won’t be tedious. Furthermore, the welding machine functions with or without a paddle during the TIG operation.

But the superb control doesn’t stop here. The machine comes with an automatic detector for the paddle. Thus, when you attach the paddle, the device will detect it and adjust accordingly.

Easy Assembly

Lincoln Electric supplies the machine, which is also preassembled. So, eventually, you are a beginner or a professional setting up the machine for the first time.

The smooth and quick setup also fastens the overall project completion. So, it is a real time-saving deal.

Variable Wire Feed Speed

The wire feed speed varies between 40-400 IPM. Hence, you will get superb control over the feed speed. Also, it is easily controllable, which further boosts the easiness of functions.

Optimal Duty Cycle

Lincoln Mig and Tig welder feature a good duty cycle. It has a 60% duty cycle for MIG, TIG, and Stick, respectively, at 95A, 115A, and 80A.

This means it can continue functioning for 6 minutes at a stretch and then needs 4 minutes of cooling time. Also, a higher duty cycle means you can accomplish projects relatively quickly.

120V Operation

Lincoln power mig 140 mp multi-process welders with 120V output. Since 120V is a regular household output, you can easily connect the machine to a steady power source.

It relieves you from the headache of worrying about the power source connection. Isn’t it nice?

Workable on Various Materials

Lincoln combo welders are also usable with cast aluminum, steel, stainless steel, and other components. The welding depth for each time varies between 24 gauge to 5/16 inches. Thus, you get quite sufficient for each round.

Lincoln multi-process welder

One of the biggest advantages of using a Lincoln multi-process welder is its flexibility. Whether you’re working on a small project or a large-scale industrial job, this machine can adapt to your needs.

You can switch between different modes quickly and easily without changing machines or equipment. This saves time and increases productivity, making it an ideal choice for professional welders and hobbyists.

Superb Transportation

Lincoln Electric LE31MP weighs only 46 pounds. The weight of a multipurpose welding device is like a feather that enables you to transport the machine at any worksite without any issue.

There’s even a quality handle mounted on the top. So, you will love taking the machine with you, especially with the gripping it provides.


Lincoln Electric LE31MP Key Features:

  • The machine performs MIG, TIG, Spool Gun, and conventional Stick welding.
  • 60% duty cycle for all types of welding purposes.
  • Drive roll changeover is possible with a fast and toolless function.
  • Prevention of sticking with the smooth arc start-up.
  • MIG gun has brass-to-bass connectivity, which increases the conductivity.
  • TIG weld is possible with or without the paddle.
  • It has an automatic paddle detection feature.
  • The super-lightweight design supports portability.
  • All essential tools and wiring are included in the package.
  • It comes with a generic bag that helps with portability.
  • Made in the USA.
  • The external framing quality needs improvement.
  • Slightly on the pricier side.



Are multipurpose welders worth the investment?

Lincoln all-in-one welders are often expensive. But the pricing is worth it since buying multiple machines for different welding purposes will cost you more.

How thick can Lincoln Electric LE31MP weld?

The Lincoln Electric LE31MP features a standard welding thickness. Hence, it can weld from 24 gauge to 5/16 inches, which should be good for most professional project completion.

How many amps is the Lincoln Electric LE31MP?

The Lincoln Electric LE31MP has a maximum output of 140 amps, which makes it ideal for medium-duty projects. Whether you need to weld steel or aluminum, this machine provides consistent power to achieve high-quality welds without compromising precision.

The variable amperage control allows you to fine-tune the power level and customize your welding experience based on the specific needs of your project.

What voltage is Lincoln Electric LE31MP?

The answer to this question depends on the region in which you are using the device; in North America, LE31MP requires a power supply of 120V AC, while in other parts of the world, such as Europe and Asia, it needs 220V AC.

It’s important to note that while voltage requirements vary by region, these devices also come with an input range specification. For example, the Lincoln le 31 mp tig kit model sold in North America may be rated for voltages between 100-240V AC.

How many amps is a Lincoln 140?

The Lincoln power mig 140 mp multi-process welder has an output range between 30A and 140A. You can adjust your amperage level depending on your specific welding needs.

Determining the amperage rating for the Lincoln 140 is the type of material you’re working with. For example, you’ll need higher amperages when working with thicker materials such as steel or aluminum than with thin sheets or pipes.


The LE31MP welding machine has been on the priority list for most professionals since it first came into the industry. During the Lincoln Electric LE31MP review, we found that professionals were right in choosing the machine.

It performs every welding task with premium precision. Although it might seem a bit pricey, considering the multipurpose use, it is worth the investment. Also, intuitive controls and easy le31mp tig setups make it an ideal option for novice learners.