KP1899-4 - Lincoln Electric KP1899-4 Type L Drive Roll & Guide Tube Kit .045-.052 Cored

Optimize Your Lincoln NA Series Feeder

Maximize the performance of your automatic welding setup with the Lincoln Electric KP1899-4 Drive Roll and Guide Tube Kit. This genuine Lincoln Electric accessory is tailored for use with the NA-3S, NA-4, and NA-5 wire feeders, specifically when running .045" to .052" (1.2mm - 1.3mm) cored wires. Automatic welding heads require absolute precision; even minor fluctuations in wire feeding can result in weld defects that require costly rework. This kit eliminates variables by providing a drive system optimized for the unique mechanical properties of cored welding wires.

The centerpiece of this kit is the Type L drive roll. Cored wires, including flux-cored (FCAW) and metal-cored (MCAW) varieties, are tubular in construction and more susceptible to deformation than solid wires. A standard smooth V-groove roll often requires excessive tension to grip the wire, which can flatten the tube and disrupt the flux continuity inside. The Type L roll included in the KP1899-4 kit is designed to grip the wire securely with minimal pressure, preserving the wire's roundness and ensuring the flux core remains undisturbed. This results in a stable arc and consistent bead profile, which is critical for the heavy-duty applications where NA feeders are typically found.

Alongside the drive roll, the kit supplies the necessary guide tube. The guide tube bridges the gap between the inlet and the drive rolls, and the drive rolls and the gun cable. Using a guide tube that is too large can allow the wire to wander, while one that is too small can cause drag. The guide tube in this kit is matched specifically to the .045-.052 inch wire range, ensuring a tight, low-friction path that supports the wire column and prevents buckling. This is particularly important when pushing wire through long conduit runs often associated with automatic boom-mounted feeders.

Investing in the correct drive roll kit is a small cost that yields significant operational benefits. By ensuring your NA-3S, NA-4, or NA-5 feeder is equipped with the KP1899-4, you are safeguarding your production against feeding-related downtime. Trust in the quality of Lincoln Electric OEM parts to keep your automated welding lines running at peak efficiency.