KP3547-364 - Lincoln KP3547-364 3/64" Knurled Drive Roll for Flux-Cored Wire

Precision Wire Delivery: Lincoln KP3547-364 Knurled Drive Roll

The Lincoln Electric KP3547-364 Drive Roll is a specialized component designed to optimize the performance of your MIG welding wire feeder. Specifically sized for 3/64 inch wire, this roll features a knurled groove configuration. Knurled rolls are the industry standard for feeding tubular wires, such as flux-cored (FCAW) and metal-cored (MCAW) consumables. The textured surface of the groove bites into the wire's surface, providing positive drive force without requiring the high clamp pressure that is typically needed for solid wires. This is crucial because tubular wires are softer and more prone to crushing; crushing the wire can distort its shape, leading to poor electrical contact in the contact tip and feeding jams.

Constructed from durable, heat-treated steel, the KP3547-364 is built to resist the abrasive wear caused by the continuous friction of welding wire. In heavy-duty welding applications, the consistency of wire feed speed is directly correlated to weld quality. Slippage at the drive rolls results in arc stuttering, burn-back, and uneven bead profiles. By utilizing this genuine Lincoln Electric part, welders can ensure a steady, uninterrupted flow of filler metal to the weld pool, resulting in superior penetration and aesthetics.

This drive roll is an essential spare part for any professional welder or fabrication shop utilizing 3/64" cored wires. It is compatible with specific Lincoln Electric wire feeder models that utilize the KP3547 series form factor. Installation is straightforward, allowing operators to switch between wire sizes or types quickly to minimize setup time. Keeping your drive system in top condition with fresh rolls is one of the most effective ways to prevent common feeding problems.

Optimized for Tubular Wires

While V-groove rolls are suitable for solid steel wire and U-groove rolls for aluminum, the knurled design of the KP3547-364 is non-negotiable for serious flux-cored welding. The teeth on the roll ensure that even if the wire encounters slight resistance in the liner or torch, the feeder can push it through effectively. This positive grip capability makes it indispensable for field work and shop fabrication alike, where reliability is paramount.