The Tweco Spray Master MS450 (SKU: 1040-1542) is a premium air-cooled MIG gun designed for high-amperage industrial welding applications. Rated at 450 Amps at an 80% duty cycle using CO2 gas, this gun is engineered to withstand the rigors of heavy fabrication, structural steel work, and shipbuilding. This specific configuration features a 15-foot (4.6-meter) cable assembly, providing ample reach for working around large assemblies without moving the power source.
The backend connection is a direct-connect Miller style, ensuring compatibility with a wide range of Miller wire feeders and welding machines. The gun comes pre-setup for 1/16-inch (1.6mm) welding wire, making it ready out-of-the-box for heavy deposition welding tasks. The internal liner and contact tip are matched to this wire diameter to ensure smooth feeding and consistent arc stability.
Maintenance is simplified with the Spray Master design. It utilizes the widely available Tweco 11 Series contact tips, 51/52/54 Series gas diffusers, and 24 Series nozzles. The conductor tube is constructed from heavy-wall copper alloy for superior heat dissipation and durability. The simplified cable connection inside the handle reduces heat buildup and potential failure points, ensuring a long service life even in harsh environments.
Technical Specifications:
| Additional Information |
|---|
| Cable Length:15 ft |
| Wire Size:1/16 |
| Connection Type:Miller |
| Cooling Method:Air Cooled |
| Torch Type:MIG Gun |
| Amperage Rating:450A |
| Duty Cycle:80% @ 450A |
| Consumable Compatibility:Tweco 11 Series Tips, Tweco 54/24 Series Nozzles |
| Applications:Heavy Fabrication, Shipbuilding, Structural Steel |
