KP2743-1-75S-B25 - Lincoln Magnum PRO 550A MIG Nozzle, 3/4 Bore, 1/8 Stickout (25-Pack)

Name: Lincoln Magnum PRO 550A MIG Nozzle, 3/4 Bore, 1/8 Stickout (25-Pack)
Brand: Welders Helper
SKU: KP2743-1-75S-B25
Price: 1188.00 CAD
Availability: InStock

~~$64.76/ea~~ Save 27% ($17.24)$47.52/eaPack of 25 — $1,188.00

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SKU: KP2743-1-75S-B25 Category: Mig Accessories

OVERVIEW

Lincoln Magnum PRO 550A Gas Nozzle - 3/4" ID, 1/8" Stickout

Maximize the performance of your Lincoln Electric MIG gun with the Magnum PRO 550A Gas Nozzle (KP2743-1-75S-B25). Designed for professional welders who demand reliability and durability, this nozzle is built to withstand the intense heat of 550-amp welding procedures. The Magnum PRO expendables line is renowned for its longevity, and this nozzle is no exception, featuring high-quality copper alloy construction that effectively dissipates heat and resists spatter adhesion, keeping your workflow smooth and uninterrupted.

This nozzle features a 3/4-inch (19 mm) bore, the standard for high-amperage applications where maximum gas coverage is non-negotiable. The wide opening ensures that the shielding gas fully envelops the molten weld pool, protecting it from contaminants even during aggressive spray transfer modes. The 1/8-inch (3.2 mm) stickout configuration allows the contact tip to extend past the nozzle, offering superior visibility of the arc and allowing for tighter access into corners or deep V-grooves where a flush or recessed nozzle might obstruct the view or the fit.

The secure thread-on mechanism eliminates the wobble often associated with slip-on nozzles, ensuring the nozzle stays centered. This concentricity is vital for maintaining a laminar gas flow and preventing turbulence that could lead to weld defects. Sold in a convenient 25-pack, these nozzles ensure your shop is stocked and ready for continuous production. Upgrade to Magnum PRO consumables and experience the difference in arc stability and part life.

Features & Benefits

High Duty Cycle: Rated for 550A, perfect for heavy manufacturing and structural steel.
Optimal Shielding: 3/4" ID provides a wide gas envelope for large weld puddles.
Enhanced Visibility: 1/8" tip stickout helps when welding in tight spots or tracking the joint.
Secure Fit: Thread-on design prevents accidental dislodging and maintains alignment.
System Compatibility: Seamlessly integrates with Magnum PRO diffusers and contact tips.

Additional Information
Brand:Lincoln Electric
Packaging Description:25-per-ea
Amperage:550
Product Type:Gas Nozzle
Compatible Series:Magnum PRO
Bore Diameter:3/4 in (19 mm)
Tip Relationship:1/8 in (3.2 mm) Stickout
Connection Type:Thread-on
Amperage Rating:550A
Item:Nozzle

INCLUDED

(25) Lincoln Electric Magnum PRO 550A Gas Nozzles (1/8 in. Stickout, 3/4 in. ID)

APPLICATIONS

Heavy Equipment Manufacturing
Structural Steel Fabrication
Shipbuilding
General Fabrication
Automotive Production
High-Amperage MIG/MAG Welding

FAQ

This nozzle is designed specifically for Lincoln Electric Magnum PRO semi-automatic welding guns rated for high amperage (typically 350A-550A models).

It means that when the nozzle is fully seated, the contact tip will protrude 1/8 of an inch (3.2 mm) beyond the end of the nozzle.

A 3/4 inch (19 mm) bore is ideal for high-amperage welding (like 550A) because it provides a larger column of shielding gas to protect the larger, hotter weld pool common at these settings.

This is a thread-on nozzle. The threaded connection ensures a tight, concentric fit that won't slip off during use.

This item (KP2743-1-75S-B25) is a bulk package containing 25 nozzles.

Yes, you can, but the large 3/4" opening might waste gas at lower amperages where a smaller nozzle (like 1/2") would suffice. It is optimized for 550A applications.

It is manufactured from a durable copper alloy designed to withstand high heat and resist spatter adhesion.

Yes, a stickout nozzle brings the gas outlet slightly further back from the work compared to the tip. However, the large 3/4" bore compensates for this to ensure adequate coverage.

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