KP502-120 - Lincoln LN-8/LN-9 Cored Wire Drive Roll Kit 7/64-0.120

Lincoln Electric KP502-120 Drive Roll Kit Overview

The Lincoln Electric KP502-120 is a specialized Drive Roll and Guide Tube Kit engineered for heavy-industrial welding applications. Designed specifically for use with Lincoln Electric LN-8 and LN-9 welding systems, this kit facilitates the feeding of large diameter cored steel wires ranging from 7/64 inch to 0.120 inch (2.8 mm to 3.0 mm). Proper drive roll selection is critical for maintaining equipment longevity and ensuring process consistency in automated or semi-automated environments.

This kit includes the necessary drive rolls and the corresponding guide tube to ensure a complete feed path solution. The components are manufactured to Lincoln Electric's high standards, ensuring precise fitment within the wire feeder mechanism. By using the correct drive roll geometry for cored wires, operators can prevent wire deformation—a common issue that leads to poor arc starts and contact tip burnback. The KP502-120 ensures that the softer, tubular structure of cored wire is gripped firmly without crushing, maintaining the integrity of the flux core.

Industrial facilities relying on LN-8 and LN-9 feeders for structural steel, heavy fabrication, or shipbuilding will find this kit essential for minimizing downtime during wire changeovers. The inclusion of the guide tube ensures that the wire is supported immediately upon entering and exiting the drive rolls, reducing the likelihood of birdnesting and feeding interruptions.