136135 - Miller 136135 VK Groove Drive Roll .030-1/16 for Spoolmatic & XR Guns

Miller 136135 V-Knurled Drive Roll for Flux-Cored Wire

The Miller 136135 is a specialized drive roll kit designed to enhance the performance of your Miller wire feeding systems when working with flux-cored or metal-cored wires. This component is engineered with a V-Knurled (VK) groove profile. Unlike smooth V-grooves used for solid wires or U-grooves used for aluminum, the knurled surface bites gently into the shell of cored wires. This provides the necessary traction to push the wire through the liner and contact tip without requiring excessive tension that could crush or deform the tubular wire structure. Maintaining the roundness of the wire is essential for good electrical contact and consistent arc characteristics.

This drive roll features a dual-groove design, offering versatility for welders who switch between wire diameters. It supports wire sizes ranging from .030 inches up to 1/16 inches (0.8 mm to 1.6 mm), covering the most common gauges used in structural and fabrication welding with spool guns. The kit is specifically compatible with a range of Miller's most popular industrial guns, including the Spoolmate 200, the XR and XR-M series of push-pull guns, and the Spoolmatic 15A and 30A models. These guns are often employed in heavy-duty applications where the portability of a spool gun or the reach of a push-pull system is required alongside the high deposition rates of flux-cored welding.

In addition to the steel drive roll itself, the package includes one (1) Replacement Insulator Male Connector. This small but critical component ensures proper electrical isolation within the drive assembly, preventing short circuits and ensuring the welding current is directed solely to the wire. Replacing the insulator during drive roll maintenance is a best practice that prolongs the life of your torch and ensures operator safety. Whether you are repairing heavy equipment in the field or fabricating structural steel in the shop, the Miller 136135 ensures your wire feeding remains reliable and smooth.