W4017215 - Lincoln Electric .045 V-Knurled Drive Roll Kit (Set of 2)

Precision Wire Feeding for Industrial Applications

The Lincoln Electric .045" V-Knurled Feed Roll Set (W4017215) is an essential component for professional welders utilizing flux-cored (FCAW) or metal-cored (MCAW) welding processes. Unlike solid MIG wires, tubular wires are softer and more prone to deformation under pressure. Standard V-groove rolls rely on tension to grip the wire, which can crush the hollow core of tubular wires, leading to poor feeding performance, erratic arcs, and increased wear on the liner.

This set features a specialized V-Knurled groove design. The knurling provides small teeth that bite gently into the wire's surface, providing positive traction with significantly less tension arm pressure. This mechanical grip ensures the wire is pushed consistently through the gun cable without flattening its shape. The result is a smooth, uninterrupted feed that is critical for high-deposition welding in structural, heavy equipment, and fabrication environments.

Durability and Compatibility

Manufactured from high-grade hardened steel, these drive rolls are engineered to withstand the abrasive nature of knurled feeding and the rigors of industrial environments. The kit includes two matching rolls, making it suitable for 2-roll drive systems or as a replacement pair for 4-roll systems (requiring two kits for full replacement). Proper maintenance of your wire drive system, including the use of the correct roll geometry for your wire type, is the single most effective way to reduce downtime caused by bird-nesting and burn-back.

Whether you are running gas-shielded flux-core or self-shielded wires, upgrading to the correct V-Knurled drive rolls is a small investment that yields significant improvements in weld quality and operator efficiency.