Tweco 1040-1111 Mig Gun 400 a 10 Ft Air Cooled

Product Description

The TWECO 1040-1111 is a Professional No. 4 Classic Series air-cooled MIG gun rated at 400 amps with a 10-foot lead cable. It accommodates wire sizes up to 1/16 inch and carries a 60% duty cycle rating when used with CO2 gas. The conductor tube is a three-layer construction consisting of a copper tube, silicon-resin glass insulator, and metal jacket, and it swivels 360 degrees around the handle. The rear connection follows Tweco-style fitment, and a fully insulated Mig-Kwik connection allows fast hookup and disconnection at the wire feeder. Licensed welders and fabrication shop technicians install this gun for semi-automatic MIG welding in medium to heavy-duty environments.

The 1040-1111 is suited for medium to heavy-duty fabrication work including production welding, maintenance and repair, and shop fabrication. The oval-shaped handle is balanced to pivot at its center, reducing grip effort and operator fatigue during extended welding sessions. A gun hanger at the bottom of the handle allows the gun to rest safely when not in use. The steel spring strain relief at the rear of the handle supports the Cablehoz to minimize wire feed issues. Applications include farm, garage, shop jobs, production, and maintenance and repair environments.

Key Features

• 400 A rating with 60% duty cycle at CO2 gas, suitable for medium and heavy-duty fabrication
• Three-layer conductor tube construction (copper tube, silicon-resin glass insulator, metal jacket) for durability and consistent current path
• 360-degree swivel metal jacket conductor tube for maneuverability in tight welding positions
• Silver-plated trigger contacts with self-cleaning action on every engagement and disengagement cycle
• Two ball-point screws secure the Cablehoz and conductor tube; split-half handle case allows field repair without additional connectors
• Front-end consumables are interchangeable with Tweco Spray Master series and Tweco Professional No. Series guns

Compatibility

Front-end consumables are interchangeable between the Tweco Spray Master series and the Tweco Professional No. Series. Rear connection follows Tweco-style fitment; an adapter plug is required for non-Tweco-native wire feeders.

Installation Notes

Installation is performed by a qualified welder or welding technician. Disconnect and de-energize the wire feeder before connecting or disconnecting the gun cable. Ensure the Tweco-style rear connection is fully seated and the Mig-Kwik connection is locked before initiating a weld. Verify duty cycle requirements against your application before sustained high-amperage use.

Technical Specifications

• Amperage: 400 A
• Duty Cycle: 60% (CO2 gas)
• Wire Size Capacity: Up to 1/16 inch
• Lead Cable Length: 10 feet
• Cooling Method: Air Cooled
• Conductor Tube Angle: 60 degrees
• Connection Type: Tweco-style rear connection with Mig-Kwik front connection
• Weight: 9.1 pounds
• UPC: 608246066769

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1040-1111