0812105884 - ESAB 4.0mm Contact Jaw for A2/A6 SAW Heads

Reliable 4.0mm Contact Jaw for ESAB A2 & A6 Systems

When you are running a Submerged Arc Welding (SAW) setup, you know that the smallest components often carry the biggest load. The ESAB 0812105884 Contact Jaw (4.0mm) is the workhorse part that sits at the business end of your A2 or A6 welding head. If you are pushing 4.0mm wire all day for heavy fabrication, beam welding, or tank manufacturing, you need a contact jaw that can handle the heat and the current without fusing or wearing out prematurely. This genuine ESAB part is built exactly for that purpose.

Submerged arc welding is all about deposition rates and consistency. If your contact jaw is worn or ovaled out, your wire starts to wander, your electrical contact gets spotty, and your arc stability goes out the window. That leads to defects that have to be gouged out and re-welded—a massive waste of time and money. This 4.0mm jaw is machined from high-grade copper alloy to ensure it maintains its shape and conductivity even under the intense thermal stress of high-amperage welding. It provides the solid electrical connection needed to keep your voltage constant and your bead smooth.

Installing the 0812105884 is straightforward, fitting directly into the contact assembly of your ESAB automatic head. It is designed to grip the wire firmly enough to transfer current but loosely enough to prevent drag on the feed motor. This balance is crucial for preventing "burn-back" and ensuring that your wire feed speed remains consistent with your machine settings. Whether you are working on a column and boom setup or a tractor unit, having fresh, high-quality contact jaws on hand is part of essential daily maintenance.

Don't let a cheap consumable compromise a million-dollar project. Stick with the OEM ESAB 0812105884 for your 4.0mm wire applications. It’s designed to last longer, conduct better, and keep your A2 or A6 head running at peak efficiency. Keep a few in your toolbox or parts bin so you can swap them out the moment you notice wear, ensuring your welds pass X-ray and ultrasonic testing every single time.