0558007501 - ESAB Migmaster Drive Shaft Coupling Assembly

Get Your Wire Feeder Back on Track

There are few things more frustrating in the shop than a wire feeder that has a mind of its own. You pull the trigger, the motor whirs, but the wire stutters, slips, or doesn't move at all. Before you blame the liner or the gun, check your drive system. If you are running an ESAB Migmaster or similar machine, the culprit might just be a worn-out connection between the motor and the gears. The ESAB 0558007501 Coupling Drive Shaft is the exact part you need to fix that disconnect and get back to laying smooth beads.

This isn't just a generic piece of plastic and metal; it's the genuine 3-piece coupling kit designed specifically for your machine. When this part fails, your wire speed becomes erratic, leading to burn-backs, bird-nesting, and ugly welds. It acts as the bridge that transfers the power from your motor to the rollers that push the wire. Over years of hard work, the teeth can strip or the coupling can shear, breaking that bridge. Swapping it out is a straightforward repair that can save you from buying a whole new feeder assembly.

Why choose the OEM replacement? Because fitment matters. A loose coupling means vibration and noise, while a tight one means smooth, consistent wire delivery. This kit includes the three necessary components to rebuild that link completely. It’s built to handle the torque of industrial welding, so you can trust it to hold up under daily use. Don't let a ten-dollar problem cause a thousand-dollar headache.

Keep your downtime to a minimum. If you hear the motor spinning but see the drive rolls standing still, or if the wire speed surges and drops unexpectedly, grab this replacement coupling. It’s a small part that plays a huge role in the quality of your work. Install the ESAB 0558007501, close up the case, and get back to welding with the confidence that your machine will feed wire exactly as fast as you tell it to.