KP665-045C - Lincoln Electric Knurled Drive Roll Kit for .035-.045 Flux-Cored Wire

Precision Wire Feeding for Flux-Cored Applications

The Lincoln Electric KP665-045C Drive Roll Kit is an essential component for welders utilizing flux-cored wire in their compact wire feeder systems. Designed specifically to handle the unique properties of cored wires, this drive roll features a knurled groove surface. Unlike smooth V-groove rolls used for solid MIG wire, the knurled texture provides positive traction on the softer, tubular flux-cored wire without requiring excessive tension. This prevents the crushing or deformation of the wire, ensuring a consistent feed rate and a stable arc during welding operations. Proper wire feeding is critical for achieving high-quality welds, and using the correct drive roll geometry is the first step in troubleshooting feed issues.

This kit is engineered to accommodate wire diameters of .035 inches (0.9 mm) and .045 inches (1.2 mm), covering the most common sizes for structural and general fabrication tasks using self-shielded or gas-shielded flux-cored wires. The ability to switch between these sizes makes it a versatile addition to your welding toolkit. The component is manufactured to Lincoln Electric's high standards, ensuring durability and precise fitment within the wire drive assembly. Replacing worn drive rolls is a standard maintenance procedure that restores the performance of your wire feeder, eliminating slippage and "bird-nesting" that can occur with degraded components.

Compatibility is key with drive system parts. The KP665-045C is explicitly designed for a range of Lincoln Electric's popular compact welders. It fits the SP-175T, SP-170T, SP-100-I, and SP-135T models. It is also the correct replacement part for the Pro-Mig 135 and the Weld-Pak 3200HD. By using genuine Lincoln Electric parts, operators ensure that the drive roll alignment matches the guide tubes and gun liner perfectly, reducing friction and wear on the entire feeding path. Whether you are performing automotive repairs, farm maintenance, or light industrial fabrication, this knurled drive roll ensures your flux-cored wire is delivered to the puddle smoothly and reliably.

Installation is straightforward, allowing for quick changeovers between wire types. When switching from solid wire to flux-cored wire, swapping the standard V-groove roll for this knurled KP665-045C model is mandatory for optimal performance. Neglecting to change the drive roll can lead to erratic feeding, burn-back, and frustration. Invest in the correct tooling for your process to maintain the efficiency and quality of your welding projects.