The Lincoln Electric Magnum PRO 550 Welding Gun (K2655-3) is engineered for the most demanding industrial environments where high amperage and continuous operation are the standard. Rated at 550 amps at 100% duty cycle using CO2 shielding gas, this air-cooled semi-automatic gun eliminates the downtime associated with overheating, allowing for uninterrupted production in heavy fabrication, structural steel, and equipment manufacturing. The gun is also rated for 100% duty cycle at 375 amps when using mixed gases, providing versatility across different welding procedures.
A key technical advantage of the Magnum PRO series is the integration of Lincoln Electric's Copper Plus contact tips. These tips feature a larger diameter and greater mass compared to standard tips, significantly improving heat dissipation. This thermal management extends the life of the consumable, reduces the frequency of tip changes, and maintains stable electrical conductivity for consistent arc performance. The gun supports a wide range of wire diameters, from 0.035 inches up to 1/8 inch, making it suitable for both fine MIG work and heavy-deposition flux-cored applications.
Durability is central to the K2655-3 design. The industrial-grade construction withstands the physical abuse typical of shop floors and field sites. The 20-foot cable assembly is robust yet flexible, ensuring reliable wire feeding even at extended distances. The gun utilizes the PRO Select Gun Selection System, allowing operators to match the gun specifically to the application's amperage requirements rather than simply matching the machine's maximum output, ensuring optimal performance and ergonomics.
Maintenance is streamlined with the Magnum PRO series. The design focuses on fast serviceability, with intuitive access to the liner and front-end consumables. The secure connection of the nozzle and diffuser ensures gas coverage remains consistent, minimizing porosity and weld defects. For professionals requiring a 550A class gun that delivers reliability without the complexity of water cooling, the K2655-3 is the definitive solution.
| Additional Information |
|---|
| Brand:Lincoln Electric |
| Amperage:550 |
| Packaging Description:pack of 1 |
| Torch Type:MIG Gun, Semi-Automatic |
| Cooling Method:Air Cooled |
| Amperage Rating:550 A |
| Duty Cycle:100% |
| Cable Length:20 ft |
| Wire Diameter:0.035", 0.045", 1/16", 5/64", 3/32", 7/64", 1/8" |
| Process Type:MIG, Pulsed MIG, Flux-Cored |
| Consumable Compatibility:Magnum PRO, Copper Plus Contact Tips |
