22-50-SS - Tweco Style 22-50-SS Slip-On MIG Nozzle, 1/2" Bore, 2-Pack

Technical Overview of the Tweco Style 22-50-SS MIG Nozzle

The Tweco Style 22-50-SS MIG Nozzle is a precision-engineered consumable designed to meet the rigorous demands of light to medium-duty industrial welding. Manufactured from high-grade 122 DHP copper alloy tubing, this nozzle offers superior thermal conductivity, which is essential for dissipating heat generated during the welding arc. This material choice significantly prolongs the service life of the nozzle by resisting the adhesion of weld spatter and reducing the risk of deformation under thermal stress. The nozzle features a 1/2-inch (12.7 mm) bore orifice, a standard size that provides a balanced shielding gas envelope suitable for short-circuit and spray transfer modes with common wire diameters such as 0.030" and 0.035".

Designed for compatibility, the 22-50-SS fits seamlessly with Tweco® No. 2 Classic, Tweco® Weldskill®, and select Lincoln® Magnum® MIG gun assemblies. It utilizes a slip-on connection mechanism that interfaces directly with the Series 32 nozzle insulator (Stock No. 1320-1100). This friction-fit design not only simplifies the installation process but also allows for longitudinal adjustment. Operators can slide the nozzle forward or backward to achieve the desired contact tip relationship—whether flush, recessed (typically 1/8"), or protruding—depending on the specific joint configuration and stick-out requirements. This adjustability is critical for optimizing arc characteristics and ensuring proper gas coverage in varying joint geometries.

The nozzle is rated for welding applications up to 250 amperes, making it a versatile component for general fabrication, automotive manufacturing, and maintenance repair operations (MRO). It is designed to function as part of a complete front-end assembly, typically housing a Series 52 gas diffuser and Series 14 contact tips. Each nozzle is roll-stamped with the part number for immediate identification, ensuring inventory accuracy and ease of reordering. This package contains two (2) nozzles, providing a cost-effective solution for maintaining equipment uptime.