KP655-052S - Lincoln LN-7/LN-9 Solid Wire Drive Roll Kit .045-.052

Precision Wire Feeding for Lincoln Systems

The Lincoln Electric KP655-052S Drive Roll Kit is an essential component for professional welders utilizing LN-7, LN-9 GMA, LN-742, or Synergic 7 wire feeders. Designed specifically for solid steel wire ranging from 0.045 to 0.052 inches (1.1 to 1.3 mm), this kit ensures that your wire feeding system operates at peak efficiency. In MIG welding, the consistency of wire delivery is directly correlated to arc stability and weld quality. Using the correct drive rolls minimizes friction and slippage, preventing common feeding issues such as birdnesting or irregular wire speeds that can lead to burn-back.

This kit features a 4-roll configuration, which is superior for maintaining positive traction on the wire without requiring excessive tension that could deform the wire. Solid wire requires a specific groove geometry to grip the smooth surface effectively; the rolls in the KP655-052S kit are engineered to provide this grip while preserving the wire's roundness. This is particularly important when welding at higher wire feed speeds where stability is paramount.

Included in the package are not just the drive rolls, but also the necessary guide tubes. The guide tubes play a critical role in supporting the wire as it enters and exits the drive assembly, ensuring it remains perfectly aligned with the grooves of the rolls and the liner of the gun. By replacing both the rolls and the guide tubes simultaneously, you restore the entire feed path to factory specifications, eliminating wear points that could cause drag. Whether you are fabricating heavy structural steel or performing high-speed production welding, relying on genuine Lincoln Electric parts like the KP655-052S guarantees compatibility and performance.

Installation is straightforward, allowing operators to switch wire sizes or replace worn components quickly to minimize downtime. Investing in the correct drive roll kit is a small step that yields significant improvements in process reliability and operator satisfaction.