53N87XL - Weldcraft 53N87XL #12 Extra Long Alumina Gas Lens Cup

Technical Specifications and Material Performance

The Weldcraft 53N87XL is a specialized Alumina Gas Lens Nozzle designed to meet the rigorous demands of precision TIG welding. Manufactured from high-grade alumina ceramic, this nozzle offers exceptional mechanical properties, including high impact resistance and superior thermal shock capabilities. In industrial environments where thermal cycling is frequent, the alumina composition ensures the nozzle maintains its structural integrity without cracking or degrading prematurely. The material also exhibits excellent thermal conductivity, aiding in the dissipation of heat generated at the arc, which is critical for maintaining the longevity of the front-end consumables during extended welding cycles.

This specific model is a Size #12 nozzle, featuring a 3/4-inch (approximately 19mm) orifice. It is categorized as an "Extra Long" nozzle, a design configuration engineered to extend the reach of the tungsten electrode and gas shielding into deep grooves, corners, or obstructed areas where standard-length nozzles cannot effectively operate. The 53N87XL is designed for use with gas lens collet bodies. Unlike standard collet bodies, gas lenses utilize a mesh screen to organize the shielding gas into a laminar flow pattern. This laminar flow is essential when using a large orifice cup like the #12, as it ensures the gas column remains coherent over a longer distance, providing robust atmospheric protection for the weld pool even when the electrode stick-out is increased.

Compatibility is a key feature of the 53N87XL. It is engineered to fit a broad spectrum of industry-standard TIG torches, including the air-cooled 9, 17, and 26 series, as well as the water-cooled 18, 20, and 27 series. This cross-compatibility makes it a versatile inventory item for fabrication shops utilizing mixed torch setups. The nozzle threads securely onto the gas lens collet body, ensuring a gas-tight seal that prevents atmospheric contamination. By resisting spatter buildup, the smooth surface finish of the alumina further reduces maintenance downtime, allowing operators to focus on weld quality.