N-5814C - Bernard Centerfire Copper Nozzle, 5/8" Bore, 1/4" Recess

Technical Overview of the Bernard N-5814C Centerfire Nozzle

The Bernard N-5814C is a premium copper MIG welding nozzle designed specifically for the Centerfire™ consumable system. Engineered to meet the rigorous demands of industrial welding, this nozzle features a 5/8-inch (15.875 mm) bore and positions the contact tip with a 1/4-inch (6.35 mm) recess. This recessed configuration is particularly beneficial for higher amperage applications where protecting the contact tip from excessive radiant heat and spatter is critical for longevity.

A defining characteristic of the N-5814C is its integration into the Centerfire system. Unlike traditional nozzles that rely on the contact tip's threads for placement, the Centerfire nozzle itself holds the "drop-in" contact tip in place against the gas diffuser. This design creates a solid, concentric relationship between the tip and nozzle, ensuring the tip remains centered even after abusive use. The nozzle features a tapered seat and a large diameter tip base, which significantly improves electrical conductivity and heat transfer compared to conventional designs.

Internally, the N-5814C is equipped with a built-in spatter shield. This component serves a dual purpose: it protects the D-1 gas diffuser from molten spatter accumulation and acts as a flow straightener. By smoothing out the shielding gas turbulence, the nozzle delivers a laminar flow of gas to the weld pool, reducing the risk of oxidation and porosity. The nozzle is threaded for secure attachment to the gun neck, ensuring precise alignment every time. It is fully compatible with Bernard BTB (Best of the Best), Q-Gun™, S-Gun™, and Clean Air™ MIG guns, making it a versatile choice for shops utilizing Bernard equipment.

Manufactured in the USA, this nozzle is constructed from high-grade copper, offering excellent thermal properties that help withstand the heat of high-duty cycle welding. The N-5814C is optimized for use with wire sizes ranging from .023" to 3/32", covering a broad spectrum of fabrication needs.