K3357-3 - Lincoln Magnum PRO AL G450W Water-Cooled Push-Pull Gun 35ft Rear Trigger

Industrial Grade Aluminum Welding Solution

The Lincoln Electric Magnum® PRO AL G450W (K3357-3) is a high-performance, water-cooled push-pull MIG gun designed specifically to address the challenges of feeding aluminum wire in industrial environments. Engineered for heavy-duty fabrication, this gun supports a 100% duty cycle at 450 Amps, making it an ideal choice for shipbuilding, trailer manufacturing, and automotive production lines where downtime is not an option. The water-cooling system ensures the torch remains at optimal operating temperatures, protecting both the consumables and the operator from excessive heat buildup during long weld cycles.

This model features a 35-foot (10.6 meter) cable assembly, providing significant reach for working on large weldments without moving the power source. The 12-pin connector ensures seamless integration with compatible Lincoln Electric feeders and power sources. A key differentiator for the K3357-3 is its Rear Trigger configuration, which offers an alternative ergonomic grip that some operators find superior for specific out-of-position welding tasks or to reduce hand strain during repetitive operations.

Maintenance and consumable life are critical in production settings. The Magnum PRO AL series utilizes Magnum PRO consumables, including Copper Plus® contact tips. These tips feature a larger diameter and mass, improving heat dissipation and extending tip life compared to standard consumables. The gun also features a quick-change liner system and a tool-less flip-up drive roll cover, allowing for rapid wire changes and maintenance on the shop floor. The recessed wire feed speed adjustment dial is strategically placed to allow easy adjustment while preventing accidental changes during handling.

Key Technical Specifications

• Rated Output: 450A at 100% Duty Cycle (Mixed Gas)
• Cooling: Water Cooled
• Wire Diameter Capacity: 0.035" to 1/16" (0.9 - 1.6 mm)
• Cable Length: 35 ft (10.6 m)
• Connector: 12-Pin Lincoln Style