KP2743-2-62F-B25 - Lincoln Magnum PRO 550A MIG Nozzle, Flush, 5/8 Inch Bore (25 Pack)

Lincoln Electric KP2743-2-62F-B25: Precision Magnum PRO Consumables

Optimize your welding operations with the Lincoln Electric KP2743-2-62F-B25, a bulk pack of 25 high-performance gas nozzles compatible with Magnum PRO semi-automatic and robotic MIG guns. These nozzles are specifically designed to integrate seamlessly with the Magnum PRO front-end expendables system, known for its durability and performance in high-heat environments. Rated for 550 amps, this nozzle is built to handle the thermal stresses of heavy-duty welding without premature failure, ensuring a longer service life compared to standard light-duty consumables.

The geometry of the nozzle is critical to weld quality. This model features a 5/8-inch (15.9 mm) orifice, which provides a broad, laminar flow of shielding gas, effectively protecting the molten weld pool from porosity-causing nitrogen and oxygen. The "Flush" geometry places the contact tip even with the nozzle exit. This is particularly advantageous for welders who prefer a visual reference point for their contact tip to work distance (CTWD). It reduces the likelihood of the nozzle obstructing the view of the arc, while still providing better gas shielding than a protruding tip setup. It is an excellent middle-ground configuration suitable for a wide array of joint configurations, including fillets and groove welds.

Durability is a hallmark of the Lincoln Electric Magnum PRO line. These nozzles are manufactured from high-quality copper alloy materials that resist spatter adhesion. When spatter does accumulate, the smooth internal bore and slip-on interface make cleaning straightforward. The slip-on fitment works in conjunction with the gun's diffuser and insulator to ensure electrical isolation and a tight gas seal, preventing leaks that could compromise weld integrity. By purchasing the 25-pack (B25), facilities can achieve better cost-per-unit efficiency and ensure that operators always have fresh consumables at hand, maintaining high productivity levels and consistent weld quality.

Technical Specifications & Compatibility:

• System Compatibility: Fits Lincoln Magnum PRO 250L, 350L, 450L, and 550 guns.
• Bore Size: 5/8 inch (15.9 mm) for standard gas flow rates.
• Installation: Slip-on friction fit for tool-less removal.
• Tip Position: Flush, ideal for standard stick-out lengths.