KP2743-1-62RA - Lincoln KP2743-1-62RA Magnum PRO 550A Thread-On Nozzle, 5/8" Bore, 1/8" Recess

Genuine Lincoln Electric 550A Thread-On Nozzle - 5/8" Bore

Optimize your welding performance with the Lincoln Electric KP2743-1-62RA Magnum PRO Nozzle. Designed for professional welders who demand reliability and precision, this nozzle is rated for 550 amps, making it suitable for high-output MIG and flux-cored applications. It is specifically engineered to fit Lincoln's Magnum PRO series guns, including the Magnum PRO AL line used for aluminum welding, ensuring a perfect factory fit and optimal conductivity.

The nozzle features a 5/8-inch bore, a versatile size that offers excellent gas coverage for standard wire diameters ranging from .035 to 1/8 inch. The 1/8-inch recessed tip configuration is preferred by many operators for its ability to keep the contact tip cooler and cleaner, minimizing burn-back risks and extending consumable life. This geometry is particularly beneficial when welding in tight corners or when higher stick-out is required for visibility.

Key to the Magnum PRO system's performance is the secure thread-on interface. This design guarantees that the nozzle remains fixed during operation, maintaining the critical alignment between the wire and the gas stream. The secure fit eliminates gas leakage at the diffuser junction, preventing porosity and ensuring high-quality weld deposits. Additionally, the nozzle walls are built to dissipate heat efficiently, keeping the front-end consumables cooler.

To combat the harsh environment of industrial welding, the KP2743-1-62RA is nickel-plated. This high-quality finish reflects radiant heat and provides a slick surface that spatter struggles to adhere to. This means less time spent scraping out the nozzle and more time welding. Whether you are working with the Magnum PRO Curve 300 or the specialized Magnum PRO AL 450W, this nozzle delivers the consistency and durability required for professional results.