The Lincoln Electric KP2742-1-50R-B25 is a premium gas nozzle designed specifically for the Magnum PRO series of semi-automatic welding guns. Engineered to meet the rigorous demands of industrial welding environments, this nozzle is rated for 350 amperes, making it suitable for a wide range of medium to heavy-duty fabrication tasks. The nozzle features a 1/2 inch (12.7 mm) inner diameter (bore), which is a standard size for general purpose welding, balancing gas flow velocity with coverage area to ensure porosity-free welds.
One of the critical specifications of this nozzle is its 1/8 inch (3.2 mm) recess. This recess depth places the contact tip slightly back from the nozzle opening, which is advantageous for protecting the tip from spatter accumulation and radiant heat while maintaining excellent shielding gas coverage over the weld pool. The recess also facilitates easier nozzle cleaning and reaming, extending the operational life of the consumable. The thread-on connection style is a significant upgrade over slip-on designs, providing a mechanically secure interface that prevents the nozzle from loosening during thermal cycling and ensures consistent electrical insulation and concentricity with the contact tip.
Thermal management is a key feature of the Magnum PRO line. These nozzles are constructed from high-quality copper alloys designed to effectively dissipate heat away from the front end of the welding gun. By keeping the nozzle and the underlying components cooler, the system experiences less spatter adhesion and reduced wear on the contact tip and diffuser. This thermal efficiency translates to reduced downtime for consumable changes and maintenance.
This product is supplied in a bulk package of 25 units (B25), designed for high-volume shops and industrial supply cribs. Bulk packaging ensures that welding operators have immediate access to replacement parts, minimizing production interruptions. The KP2742-1-50R-B25 integrates seamlessly with other Magnum PRO 350A components, including contact tips and gas diffusers, allowing for a fully optimized welding gun setup tailored to specific application requirements.
| Additional Information |
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| Brand:Lincoln Electric |
| Amperage:350 |
| Packaging Description:25 Per Ea |
| Product Type:Gas Nozzle |
| Series:Magnum PRO |
| Bore Diameter:1/2 in (12.7 mm) |
| Recess:1/8 in (3.2 mm) |
| Connection Type:Thread-on |
| Compatible Gun Rating:350A |
