MIGWELD 140140AMP 110v MIG WELDER (Spool Gun Capable)


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MODEL : MIGWELD 140     PRODUCT # : 880144

product Highlights:

140AMP 110v MIG WELDER (Spool Gun Capable)

Availability: In stock

Retail Price: $501.40

Sale Price: $489.99

Optional Additional Warranty:
Additional 1 Year Warranty (Parts and Labor) : $200.00
Additional 2 Year Warranty (Parts and Labor) : $375.00
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Recommended Areas Of Use

  • Welding Repair
  • Motorsports/ Automotive
  • Contstruction/HVAC
  • Commercial maintenance
  • Fabrication/machine shops

What’s included

  • Main Unit with 10ft MIG Torch
  • Ground Clamp
  • Regulator Flow Gauge
  • Contact Tips
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Watch The Set-up and Performance


Gas or Gasless Welding on 110v power!

The MIGWELD 140 is the most versatile welder which will do aluminum with the optional spool gun in addition to all exotic metals. The MIGWELD 140 will easily connect to your existing 110v wall outlet and can be setup easily in minutes. Running on a standard 110v power cord and capable of holding up to an 11lb spool, you will be able to lay down a nice weld anywhere with or without gas!

Durable Wire Feeder Plus Spool Gun Capable

 The MIGWELD 140 is an exceptional welder for the price!
It will also allow you to weld aluminum with the optional
spool gun, which sells for $119.99. Easy to setup and
attach, you are able to run a 1lb aluminum spool from the
Spool Gun.

Powerful, Reliable,Efficient Technology

LONGEVITY offers cutting-edge technology in the
MIGWELD 140 by including reliable transformer technology inside this unit. Transformer technology has been proven in welding for decades as reliable and durable. The welder still maintains a small and portable feel with a total box weight of 54lbs. The machine itself is around 40lbs.

Thermal Overload Protection

If you are welding for a long period of time and your duty cycle limit is reached, LONGEVITY’s thermal overload protection will kick on safely shutting down your machine for proper cooling avoiding any damage. Once it cools, you will be able to weld again!

Easy, User Friendly Adjustments

The MIGWELD 140 panel allows the user to see the
settings quickly and accurately. By using the variable
adjustment dials, the user can fine tune the welder to the
exact setting for faster and accurate welding every time.

110v Power!

The MIGWELD 140 is a true 140 amp welder using your
standard 110v outlet. Easily plug your MIGWELD 140 with
the supplied plug into any wall receptacle and start welding
with the standard torch or the spool gun!

Easy Setup

LONGEVITY equips the user with Tweco® style connectors enabling you to easily swap torches anytime with your favorite guns.Lots of Included Extras!


Lots of Included Extras!

The MIGWELD 140 comes with a mild steel 1lb welding
wire roll, welding mask, chipping hammer, welding brush,
and gas regulator. Together, you are ready to weld with
this all in one package!


110v 50/60hz 1 phase

Spool Gun Capable

YES with Optional SpoolGun140


Inverter Based

Duty Cycle

20% @ 90A 18V

Stick Welding Capable


Wire Range

.025”-.030” (0.6-0.8mm) solid steel

.030”-.035” (0.8-0.9mm) Flux-Cored


W: 9.6” x H: 14.5 ” x D:16 ”


40 lbs




Product Literature :
View FileMigWeld 140 Spec Sheet 332.58 KB
View FileMigWeld 140 Manual 2 1.3 MB


One year Warranty, parts and labor. Please take a look at our terms and policy page for detailed warranty information on this unit.












 Rated Input 120VAC, 60 Hz, 18 Amps  -- 115VAC, 60 hertz, 20 amps 1 Phase 220v-240v 50/60hz
Technology INVERTER  -- Infineon IGBT Infineon IGBT
No Load Voltage --  -- 50v-80v 58v
Rated Input Current --  --  -- 1 Phase: 40Amps 3 Phase: 23Amps
Rated Input Power -- --  -- 9 Kva
Power Factor --  -- --  .08
Efficiency --  --   85%
Voltage Adjusting Range --  --  -- 14-28v
Current Output Range 50-100 Amps  -- 20-140A 40-250A
Min./Max. Output (Amps)
10%@100amps  -- 30-140Amps:
20% Duty Cycle at 140 Amps
250amp duty cycle is 60%
200amp duty cycle is 100%
Wire Speed --  -- 59 to 393 in/min (1.5-10.0m/min) 59 to 393 in/min (1.5-10.0m/min)
Maximum Spool Size Capacity --  -- 30 lb. Internal Spool Feeder 30 lb. Internal Spool Feeder
Suitable Wire  Welding wire size:.035" to 040"  -- .8, 1.0 solid/flux cored wire. .030,.045 solid/flux cored wire.
Spool Gun Capable NO  -- SPOOL GUN 140 SPOOL GUN PRO
GMAW-P (Pulse MIG feature ) NO  -- No Yes, Yes(Double Pulse)
Stick Welder (Option) NO  --  -- Yes
DC Stick Material Thickness --  -- -- --
Stick ( ARC ) Electrode Maximum Diameter (E7018) --  -- -- 3/16"
 Weldable Materials Mild Steel  -- Stainless Steel, Mild Steel, Aluminum with Spool Gun Stainless Steel, Mild Steel, Aluminum with Spool Gun



•    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
•    2 lb Spool of Mild Steel
•    Gas Line
•    Welding Mask





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One year Warranty, parts and labor. Please take a look at our terms and policy page for detailed warranty information on this unit.

Amazing Little Machine Review by Chris
I have had the 140 for about 3 months and I am thrilled with it. This thing has no problem welding up to 1/4" with a single pass with flux core, and I still have not turned it up all the way. I am excited to get some gas and start working on thin material with it.

Two thumbs, way up Longevity! (Posted on May 01,2015)

MigWeld 140 is a great welder! Review by Old Timer
I am a hobby welder with some stick welding experience but in no means a professional. I bought this welder about three months ago after looking at the many options of 110 volt MIG welders. For the price and flexibility, you simply cannot beat this welder. Buy the spool gun with it....you'll have a blast welding aluminum with ease! (Posted on Jul 15,2013)

Excellent welder Review by Fergal
With this welder I can do accurate welds with no slag and little fumes. Now I can weld aluminum without any problem using spool gun. No complaints about customer service. Delivery was made without delay. (Posted on Apr 27,2013)

Exceptional Mig welder Review by Jeff
It is really an exceptional machine for the price. I acquired this welder to weld aluminum in a garage. It provides high welding speed and control on material. Now, I can get clean and accurate welds with little slag. It is setup easily. In addition, I got a lot of included extras.
(Posted on Apr 25,2013)

I recommend you to acquire this welder Review by Edgar
I have bought this welder to use in workshop for welding parts of trawl doors. I am completely satisfied with welding productivity and materials consumption rate. Thermal overload protection extends the lifetime of the device. It is easy operated; its portability is very suitable for my job because I have to move around a lot. Besides, when buying a welder I was surprised to get included extras-welding wire roll, welding mask, hammer, welding brush,and gas regulator (Posted on Apr 23,2013)

test Review by carlos
test (Posted on Apr 23,2013)

all-purpose welder Review by Ricardo Montoya
Good welder!!! Industrial quality steal for 3 hundred bucks. Works for aluminium with additional spool gun which you may want to buy separately on the same site, not included Creates nice looking accurate welds with a little practice. Easy to operate. Very satisfied, thank you. (Posted on Apr 13,2013)

QUALITY WELDER Review by alexjohn845s
Reliable and fairly simple to use. Best for outdoors, but has all necessary components if you are working indoors or with thinner metals. Good quality welder. (Posted on Apr 10,2013)

Questions and Answers

1 Item(s)

per page
Does the Migweld140 have specific requirements regarding the gas cylinder? Can I just use the cheapest cylinder I can find? These cylinders are not cheap so I am afraid to get one that won't work and pay through the teeth for it.
1 Answer
Posted On: 10/3/13 By: Mark Erwin
Post your answer

A :You can use any used or cheap cylinder. Often gas places will swap them for you anyway like a propane gas swap program.

Posted On: 10/11/13By: admin