KP52079-035C - Lincoln Electric .035 Knurled Drive Roll Kit for Flux-Cored Wire

Optimized Wire Feeding for Flux-Cored Applications

The Lincoln Electric KP52079-035C Drive Roll Kit is a specialized accessory designed to enhance the performance of wire feeding systems when using .035-inch (0.9 mm) cored welding wires. In industrial welding environments, the consistency of wire delivery is paramount to achieving high-quality welds. Standard smooth V-groove rolls, while excellent for solid steel wires, often rely on tension that can crush or deform softer flux-cored and metal-cored wires. This deformation can lead to poor electrical contact in the contact tip, erratic arcs, and increased wear on the liner.

This kit addresses those challenges with precision-engineered knurled drive rolls. The knurled surface features small teeth that grip the wire sheath, providing positive traction with significantly less down-pressure from the tension arm. This mechanical grip ensures that the wire is pushed consistently through the gun cable, even when the cable is bent or long, without flattening the wire's cross-section. The result is a stable arc, reduced spatter, and minimized downtime caused by feeding issues or "birdnesting" at the feeder.

As a genuine Lincoln Electric component, the KP52079-035C is manufactured to tight tolerances to ensure perfect alignment with the wire guides and the gun receiver bushing. The kit typically includes not just the rolls but also the matching input and output guides, ensuring that the wire path is fully supported and aligned for the specific .035" diameter. This comprehensive approach to wire feeding maintenance helps extend the life of the welding machine and improves the operator's efficiency by removing the frustration of slipping wire.

Installation is straightforward, allowing maintenance personnel or operators to swap out rolls quickly when changing wire types or diameters. By using the correct drive roll geometry for the application, users protect their equipment investment and ensure that the welding procedure specifications (WPS) are met with reliable wire feed speeds.