48.0005.0169 - Fronius Centering Stone 4.0mm (9x20) for Tungsten Grinder

Keep Your Grinder Running Smoothly

If you are running 4.0mm tungsten for your heavy-duty TIG jobs, you know that a sharp, centered point is everything. The Fronius Centering Stone 4.0mm (48.0005.0169) is the replacement part you need when your grinder starts getting sloppy. We've all been there—you put the tungsten in the sharpener, and it wobbles around, giving you a lopsided point. That lopsided point leads to a wandering arc, frustration at the bench, and welds that just don't look right. Usually, the culprit is a worn-out guide or centering stone.

This specific stone is sized perfectly for 4.0mm electrodes. It measures 9mm x 20mm, fitting directly into the assembly of your Fronius grinder. It acts as the steady hand that holds the rod in place while the diamond wheel does its work. When this part is fresh, your tungsten spins true, and you get that perfect, pencil-sharp point with the grind lines running straight down the shaft. That means better arc starts, better puddle control, and less time fighting your equipment.

Maintenance is part of the game. Just like you change your collets and gas lenses, you need to keep an eye on your grinder parts. If you notice your 4.0mm tungsten fitting loosely in the guide, or if the grind is coming out uneven, it's time to swap out the centering stone. It’s a quick fix that makes a huge difference in your daily welding comfort. Don't let a cheap worn-out part ruin your expensive tungsten or your weld quality.

This is a genuine Fronius part, so you don't have to worry about it fitting. It drops right in and gets you back to grinding. Whether you are welding thick aluminum plate or heavy-wall stainless pipe, having your 4.0mm tungsten prepped correctly is the first step to a successful weld. Grab a spare Centering Stone today and keep your prep station fully operational.