KP52079-040C - Lincoln Electric .040 Knurled Drive Roll Kit

Stop Wire Slippage and Bird-Nesting

If you are running .040" flux-cored or metal-cored wire, you know that standard V-groove rolls just don't cut it. They rely on crushing pressure to grip the wire, which flattens the tube and ruins your feed. That's where the Lincoln Electric KP52079-040C Knurled Drive Roll Kit comes in. These rolls have small teeth (knurling) in the groove that grab the wire like a gear, giving you positive traction with much less tension on the drive arm.

This means you get a consistent, smooth wire feed speed even if your gun cable is twisted or you are pushing through a long liner. Consistent feed means a stable arc, less spatter, and better-looking welds. These are genuine Lincoln parts, so they fit your feeder perfectly and last a long time before the knurling wears down. Don't fight your machine; give it the grip it needs to push that soft tubular wire smoothly.

Installation is quick and easy, getting you back to burning wire in minutes. Whether you are in the shop fabricating structural steel or out in the field, having the right drive rolls is the cheapest insurance against frustrating feed problems. Make sure your setup matches your wire size—this kit is specifically for .040" (1.0 mm) wire.