Tweco 1040-1147 Mig Gun 400A 15 Ft Lincoln Connection

Product Description

The TWECO 1040-1147 is a Professional No. 4 Classic Series air-cooled MIG gun rated at 400 amps with a 60% duty cycle using CO2 gas. It accepts wire sizes from 0.045 to 1/16 inches and features a 15-foot lead cable with a Lincoln-style rear connection. The oval-shaped handle is constructed from high-impact, crush-resistant plastic and is balanced to pivot at the center for reduced operator fatigue. The conductor tube is a three-layer assembly — copper tube, silicon-resin glass insulator, and metal jacket — providing a reliable current path from handle to contact tip. A silver-plated trigger with self-cleaning action activates each weld cycle.

This MIG gun is built for semi-automatic welding in medium to heavy-duty fabrication environments. Typical applications include structural and production welding in industrial shops, maintenance and repair operations, and farm or garage fabrication. The 15-foot cable provides good wire feedability and reach for in-position and out-of-position welds. The 60-degree metal jacket conductor tube swivels a full 360 degrees around the handle, allowing the operator to reposition for flat, horizontal, vertical, and overhead passes without disturbing the cable layout.

Key Features

• 400-amp rating at 60% duty cycle with CO2 gas
• Accepts 0.045 to 1/16 inch wire diameter
• 15-foot cable with Lincoln-style rear connection for direct feeder compatibility
• Three-layer conductor tube construction (copper tube, silicon-resin glass insulator, metal jacket) for durability and current efficiency
• 60-degree metal jacket conductor tube with full 360-degree swivel around handle
• Silver-plated trigger contacts with self-cleaning action on every actuation
• Steel spring strain relief at rear of handle minimizes wire feed issues at the Cablehoz exit point
• Split-half handle case allows field repair without additional connectors

Compatibility

Features a Lincoln-style rear connection for use with compatible Lincoln-style wire feeders. Front-end consumables are interchangeable with the Tweco Spray Master series and Tweco Professional No. series guns, reducing the need to stock separate consumable inventories.

Installation Notes

Installation and service should be performed by a qualified welding technician or maintenance professional. Before connecting or disconnecting the gun at the wire feeder, power down the welding system and relieve any wire tension at the drive rolls. The fully insulated Mig-Kwik connection at the feeder end allows quick connection and disconnection without tools. Follow the equipment manufacturer's documentation and applicable workplace safety standards when routing the cable and securing the rear connection.

Technical Specifications

• Amperage: 400 amps
• Duty Cycle: 60% (CO2 gas)
• Wire Size Range: 0.045 to 1/16 inches
• Cable Length: 15 feet
• Conductor Tube Angle: 60 degrees
• Conductor Tube Swivel: 360 degrees
• Cooling Method: Air-cooled
• Rear Connection Style: Lincoln
• Package Weight: 12.92 pounds
• Package Length: 23.2 inches
• Package Width: 14.3 inches
• Package Height: 3.4 inches

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1040-1147