KP2743-1-75R-B25 - Lincoln Magnum PRO 550A Thread-On MIG Nozzle, 3/4" Bore, 1/8" Recess (25-Pack)

High-Performance Consumables for Magnum PRO Systems

The Lincoln Electric KP2743-1-75R-B25 Magnum PRO Gas Nozzle is a premium welding consumable engineered to deliver consistent results in demanding industrial environments. Designed specifically for use with Lincoln's Magnum PRO Semi-Automatic Welding Guns, these nozzles are built to withstand the rigors of high-amperage welding. With a rating of 550 amps, this nozzle is ideal for heavy fabrication tasks where heat management and durability are paramount. The robust construction ensures that the nozzle maintains its structural integrity even under prolonged exposure to intense welding arcs, providing a reliable solution for professional welders.

Optimized Gas Coverage and Tip Protection

Featuring a generous 3/4-inch (19 mm) inner diameter, this nozzle facilitates a high volume of shielding gas flow, which is essential for protecting the weld pool in heavy-duty applications. The 1/8-inch (3.2 mm) recess is a critical design feature that positions the contact tip slightly back from the nozzle opening. This recess helps to protect the contact tip from excessive heat and spatter, reducing the frequency of tip changes and minimizing the risk of electrical shorts caused by spatter bridging. This design balance ensures optimal arc stability and weld quality.

Secure Thread-On Design

One of the standout features of the KP2743-1-75R is its thread-on connection mechanism. Unlike slip-on nozzles that can loosen over time due to thermal expansion and contraction, the thread-on design ensures a tight, secure fit to the diffuser. This solid connection not only prevents the nozzle from falling off during operation but also enhances thermal conductivity, helping to draw heat away from the front end of the gun. This efficient cooling is vital for maintaining the longevity of both the nozzle and the welding gun consumables.

Bulk Value for High-Volume Shops

Supplied in a convenient package of 25, the KP2743-1-75R-B25 offers excellent value for workshops and manufacturing facilities with high consumable turnover. By purchasing in bulk, businesses can ensure they always have critical spares on hand, minimizing downtime and maintaining production schedules. Whether you are welding structural steel, heavy machinery, or pressure vessels, these Lincoln Electric nozzles provide the performance and reliability needed to get the job done right.