Bernard 4391 300A MIG Nozzle Conical 10 Pack
$98.00
Product Introduction
Heavy-duty conical MIG nozzle designed for Bernard 300amp torches, ideal for high-heat 200-300A mixed gas applications. Features extreme heat-resistant copper construction, slip-on design, and superior durability compared to OEM parts. 10-pack for extended use.
Specifications
| Part Number | 4391 (UNIMIG: PWGA4391) |
| Material | Heat Resistant Copper |
| Amperage Rating | 300A |
| Dimensions | 67mm length, 22mm OD, 16mm base |
| Quantity | 10 Pack |
Bernard MIG Nozzle / Shroud 4391 Conical – 10 Pack for 300amp Torches
Upgrade your welding performance with the Bernard 4391 Conical MIG Nozzle, a premium 10-pack solution designed for heavy-duty 300amp torches. Engineered for extreme heat resistance and durability, this nozzle ensures consistent arc stability and extended service life in high-amperage mixed gas applications.
Core Specifications
| Part Number | 4391 |
| Compatibility | Bernard 300amp Torches, Q-Gun? & S-Gun? Series |
| Material | Extreme Heat Resistant Copper |
| Amperage Rating | 300A |
| Quantity | 10 Pack |
| Length | 67mm |
| Outside Diameter | 22mm |
| Base Diameter | 16mm |
| UNIMIG Part # | PWGA4391 |
| Construction | Heavy-Duty Insulated Tapered Design |
Key Benefits
- Superior Durability: 30% longer lifespan than OEM nozzles due to reinforced copper construction
- Heat Resistance: Withstands 200-300A high-heat environments without deformation
- Precision Fit: Standard slip-on design ensures secure attachment to Bernard torches
- Cost-Effective: 10-pack value reduces replacement frequency and operational costs
- Versatile Application: Optimized for mixed gas welding processes in industrial settings
Applications
Ideal for heavy industrial welding operations including automotive manufacturing, construction, shipbuilding, and metal fabrication. Perfect for continuous-duty applications requiring consistent performance under high heat conditions.
Performance Testing
Independent lab tests confirm: 500+ weld cycles at 300A without performance degradation, 40% better thermal conductivity than standard brass nozzles, and maintained dimensional stability at 1200¡ãF (648¡ãC) operating temperature.
Quality Assurance
Manufactured to ISO 9001 standards with 100% inspection. Each nozzle undergoes pressure testing and dimensional verification to ensure compatibility with Bernard torch systems.
Why Choose Our Nozzles?
Unlike generic alternatives, our Bernard-compatible nozzles feature precision-machined tolerances (¡À0.02mm) and proprietary copper alloy formulation, delivering 27% more arc stability and 35% less spatter accumulation during extended welding sessions.
FAQ
- Q: Will this fit non-Bernard torches?
A: Designed specifically for Bernard 300amp Q-Gun? and S-Gun? series torches - Q: What gas mixtures is this suitable for?
A: Optimized for Ar/CO?, Ar/O?, and tri-mix shielding gases - Q: How often should nozzles be replaced?
A: Under normal 300A operation, expect 2-3x longer service life than standard nozzles
Ready to enhance your welding efficiency? Contact our technical team for bulk pricing, compatibility verification, or application-specific recommendations. Request a quote today and experience the difference in industrial-grade welding accessories.
Packaging & Transportation
weldercutting Nozzles
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