KP666-035C - Lincoln Electric Knurled Drive Roll for .035 Flux-Cored Wire (SP-125/175 Plus)

Reliable Wire Feeding for Flux-Cored Applications

The Lincoln Electric KP666-035C Drive Roll Kit is an essential component for welders utilizing flux-cored wire with specific Lincoln Electric power sources. Designed to fit the SP-125 Plus and SP-175 Plus welding systems, this drive roll is engineered to handle the unique physical properties of cored wire. Unlike solid MIG wire, flux-cored wire is tubular and filled with flux, making it more susceptible to crushing if improper drive rolls are used. This kit solves that problem with a specialized design tailored for .035 inch (0.9 mm) wire diameters.

The standout feature of this drive roll is its knurled groove. Smooth V-groove rolls rely on tension to grip the wire, which works well for solid steel but can flatten or deform hollow cored wires, leading to poor feeding and erratic arc performance. The knurled teeth on the KP666-035C bite gently into the surface of the wire, providing positive traction without requiring excessive pressure from the tension arm. This ensures the wire moves smoothly through the liner and contact tip, reducing bird-nesting and burn-back issues.

Installation is straightforward, allowing operators to quickly switch between solid and cored wire setups. Whether you are performing maintenance in a garage or fabrication in a shop, ensuring you have the correct drive roll installed is critical for weld quality. This genuine Lincoln Electric part guarantees fitment and durability, ensuring your machine operates at peak efficiency. By maintaining consistent wire speed, you achieve better penetration and cleaner welds, making this small accessory a vital part of your welding toolkit.

Investing in the correct drive roll prevents downtime caused by feeding issues. The KP666-035C is built to the high standards expected of Lincoln Electric products, offering longevity and reliability. Ensure your SP-series welder is ready for any flux-cored project by equipping it with the drive roll designed specifically for the task.