079610 - Miller 5/64" Flux-Cored Drive Roll Kit for 2-Roll Feeders

Optimize Your Flux-Cored Welding

Feeding flux-cored and tubular wires presents unique challenges compared to solid MIG wire. The wire is hollow and filled with flux, making it more susceptible to crushing if the drive roll tension is set too high. However, because it is often used in heavy-duty applications, it requires a steady, powerful feed. The Miller 079610 Drive Roll Kit is the solution for welders running 5/64" tubular wire on Miller 2-roll machines.

The VK-Groove Advantage

Standard V-groove rolls rely on friction from a smooth surface, which works well for solid steel wire but can slip on flux-cored wire unless tightened to the point of deformation. This kit utilizes VK-Groove rolls, which feature a knurled (teeth-like) texture in the groove. These teeth gently bite into the surface of the wire, providing positive traction with significantly less clamping pressure. This design ensures:

• Consistent Wire Speed: Eliminates slipping, which causes burn-back and stuttering arcs.
• Structural Integrity: Prevents the wire from being flattened (ovaled), ensuring it passes smoothly through the contact tip.
• Reduced Wear: Lower tension settings mean less strain on the wire feed motor.

Complete 2-Roll Solution

This kit is a direct replacement for the stock rolls on your Miller 2-roll wire feeder. It comes complete with two matched drive rolls and a new inlet wire guide. Installing the new inlet guide is just as important as the rolls themselves; it ensures the wire is centered perfectly in the grooves, preventing shaving and debris buildup that can clog your liner. Whether you are fabricating structural steel or performing heavy equipment repair, upgrading to the correct VK-groove rolls is the first step to a trouble-free weld.

Installation Tips

When installing the 079610 kit, ensure the drive roll faces are clean and seated properly on the carrier. Adjust your tension arm so that the drive rolls just barely stop feeding when the wire is blocked at the tip (during a non-welding test), then tighten slightly. Because of the knurled grip, you will need far less tension than you are used to with solid wire. This preserves your equipment and ensures the flux core remains undisturbed inside the wire.