KP52079-045C - Lincoln Electric .045 Knurled Drive Roll Kit for Flux-Cored Wire

Precision Wire Feeding for Flux-Cored Applications

The Lincoln Electric KP52079-045C Drive Roll Kit is engineered specifically for feeding .045-inch (1.2 mm) flux-cored welding wire. Unlike solid wires, flux-cored wires are tubular and softer, requiring a specific drive roll geometry to prevent crushing while ensuring positive traction. These drive rolls feature a knurled groove design, which provides small teeth that grip the wire shell securely. This design eliminates slippage and ensures a consistent wire feed speed, which is critical for maintaining a stable arc and producing high-quality welds.

This kit is an essential maintenance component for compatible Lincoln Electric wire feeders. Over time, drive roll teeth can wear down, leading to erratic feeding, burn-backs, or bird-nesting. Replacing worn rolls with this genuine Lincoln Electric kit restores the feeder's performance. The kit is comprehensive, including two drive rolls, necessary set screws, and a hex key for immediate installation, minimizing downtime in industrial or workshop environments.

Proper wire feeding is the foundation of successful MIG and Flux-Cored welding. Using the correct drive roll for the wire type and diameter is non-negotiable. The knurled surface is specifically intended for cored wires; using smooth V-groove rolls on flux-cored wire can lead to excessive pressure requirements that deform the wire, while using knurled rolls on solid wire can shave metal shavings into the liner. This .045" knurled set is the exact solution for flux-cored operations.