The Bernard Style 4491 Nozzle is a premium aftermarket replacement component designed to meet the rigorous demands of industrial MIG welding. Engineered for compatibility with Bernard Q-Gun, S-Gun, and T-Gun series MIG guns, this nozzle assembly is an essential consumable for maintaining the efficiency and quality of your welding operations. This specific model features a substantial 3/4-inch (19mm) bore orifice, making it ideal for high-amperage applications where extensive shielding gas coverage is critical to prevent porosity and atmospheric contamination of the weld pool.
Constructed from high-quality brass, the 4491 nozzle offers excellent thermal conductivity and durability. Brass is widely preferred in medium-to-heavy duty applications for its ability to resist spatter adhesion better than pure copper in certain environments, while maintaining structural integrity under the intense heat of a 400-amp arc. The nozzle is rated for use up to 400 amps, aligning perfectly with standard industrial setups using 0.045" or 1/16" wires. It is designed to mate seamlessly with the 4435 gas diffuser, ensuring a secure fit and concentric gas flow around the contact tip.
This product is supplied as a complete nozzle and insulator assembly. The integrated insulator is crucial for electrically isolating the nozzle from the electrically live contact tip and diffuser, preventing accidental arcing if the nozzle touches the workpiece. This 10-pack configuration is tailored for MRO (Maintenance, Repair, and Operations) procurement, ensuring that welding stations remain stocked with critical consumables, thereby minimizing downtime associated with part wear and replacement.
| Additional Information |
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| Packaging Description:10 in a pack, 2 in a pack |
| Item:Nozzle |
| Brand:Bernard Style |
| Amps:400amp |
| Material:Brass |
| Bore Size:3/4" |
| Compatible Diffuser:4435 |
| Component Type:Nozzle/Insulator Assembly |
