The Lincoln Electric KP2743-1-62RA is a premium consumable designed to meet the rigorous demands of industrial welding. Part of the renowned Magnum PRO series, this nozzle is engineered to support high-amperage welding up to 550 amps, making it an essential component for heavy fabrication and continuous duty cycles. Its robust construction ensures it can withstand the intense heat generated during prolonged welding sessions without deforming or degrading.
This specific nozzle features a standard 5/8-inch (15.9 mm) bore ID, which provides a balanced shielding gas flow ideal for a wide range of welding applications. The 1/8-inch (3.2 mm) recessed tip relationship is a critical design element that helps protect the contact tip from molten spatter and reduces the risk of electrical shorts against the workpiece. This recess also aids in maintaining proper stick-out, which is vital for arc stability and weld quality.
One of the standout features of the KP2743-1-62RA is its thread-on connection. Unlike slip-on nozzles that can shift or vibrate loose, the thread-on mechanism locks the nozzle securely in place. This ensures precise concentricity between the contact tip and the nozzle bore, resulting in uniform gas coverage and reduced turbulence. The coarse threads are specifically designed to resist seizing, allowing for easy removal even after the nozzle has been subjected to extreme thermal cycling.
Durability is further enhanced by the nickel-plated finish. This plating acts as a barrier against spatter adhesion, preventing the buildup of molten metal that can obstruct gas flow and shorten the life of the consumable. By resisting spatter, the nozzle remains cleaner for longer, reducing downtime associated with cleaning and replacement. This nozzle is compatible with Magnum PRO Curve 300, Magnum PRO AL 225A, and Magnum PRO AL 450W MIG guns, as well as the 250LX Spool Gun.
| Additional Information |
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| Brand:Lincoln Electric |
| Item:Nozzle |
| Amperage:550amp |
| MIG Gun Model:Magnum PRO Curve 300, Magnum PRO AL 225A, Magnum PRO AL 450W |
| Bore Size:5/8 in |
| Tip Relationship:Recessed |
| Packaging Description:1 per each |
| Bore Diameter:5/8 in (15.9 mm) |
| Tip Recess:1/8 in (3.2 mm) |
| Connection Type:Thread-On |
| Material Finish:Nickel Plated |
| Compatible Wire Size:.035 - 1/8" |
