SM300Series Spool Guns are designed to feed wires which are difficult to feed through the standard MIG gun. These Guns can be used for stainless steel, flux-cored, and thin solid wires however they are most commonly used for aluminum and brazing wires measuring 0.03, 0.035, and 0.040 in. If you are going to use a MIG gun longer than 15 feet with solid wire or flux-cored measuring 0.023 or 0.030 in., Spool Gun is the best option

SM300 is a 300 A lightweight, well-balanced, dual groove drive roll, easy to set up, designed for easy and reliable aluminum wire feeding with a variety of CV power sources and engine-driven welders.The design of this spool gun reduces the maintenance and production time by allowing easy access to the drive rollers and performing routine maintenance without disassembling the gun.

Features

• Cost-effective solution for precise control of MIG welding with hard and soft wires.
• Excellent and reliable for running one-pound aluminum spool MIG welding wire or two-pound mild steel and stainless-steel spool.
• Furthermore, silicon bronze MIG welding wire can be used as well.
• A unique wire break keeps the spool under constant tension to prevent the overrun of the wire.
• Excellent wire retainer to keep the wire from de-reeling in operation.
• Impact-resistant handle that encased a durable motor.
• Possibility of using threaded or slip-on gas nozzles.
• Clear flip top wire spool cover allows you to check the remaining wire immediately.
• Ideal for medium and Heavy-duty industries because of a powerful 24V motor.
• Easy access to the drive roll tension and pressure lever on the pull gun handle.
• A specially designed cable possesses outstanding flexibility with the highest heat and abrasion resistance of any known cable.
• Equipped with a special termination adapter that allows you to change the installed termination to other versatile termination styles.

Processes

• MIG (GMAW)
• Pulsed MIG (GMAW-P) with pulsing power source
• FCAW

Wire Types 

• Aluminum
• Steel
• Flux Cored Wire

Industrial Applications 

• Aerospace Hardware
• Trucks Trailers and Railcars
• Travel and Cargo Trailers.
• Recreational Vehicles.
• Boat/Yacht Building
• Fabrication

Technical specification

Welding Output:

230 A CO2 200A Mixed Gas at 60% Duty Cycle

Recommended Wire Diameter:

For Aluminum wire:

0.030″ to 0.045″ (0.8 to 1.2 mm)

For Brazing wire:

0.030” to 0.040” (0.8 to 1.0 mm)

For Flux Cored wire:

0.030” to 0.045” (0.8 to 1.2 mm)

For Solid wire:

0.030” to 0.040” (0.8 to 1.0 mm)

Recommended Gas Flow:

For 1/2″ (12.8 mm) nozzle bore

22-27 CHF (11-13 l/min)

For 5/8″ (16.0 mm) nozzle bore

30-35 CHF (14-17 l/min)

For 3/4″ (19.0 mm) nozzle bore

30-40 CHF (14-19 l/min)

Motor Voltage:

24 Volt DC

Head and Nozzle style:

Tweco® Style

Maximum Spool Size (Al, FCAW or Solid wire):

4″ /102 mm

Central Connector type:

Euro Connector/TWECO® Connector/ Miller® Connector/ Lincoln® Connector

Copper Cable Length:

20 ft. (6 meter).

Weight (Gun Only):

2.71 Lb /1.23 Kg