KP665-035 - Lincoln Electric Pro-Mig Drive Roll Kit for .023-.035 Solid Wire

Precision Wire Feeding for Lincoln Pro-Mig Systems

The Lincoln Electric KP665-035 Drive Roll Kit is a critical component for maintaining the operational efficiency of specific Lincoln MIG welding systems. Engineered with precise tolerances, this drive roll is specifically manufactured to handle solid welding wires ranging from .023 to .035 inches (0.6 to 0.9 mm). The kit is designed to interface seamlessly with the wire drive mechanisms of the Pro-Mig 135 and Pro 155 welding machines, ensuring that the wire is fed at a consistent speed relative to the voltage settings.

Technically, the drive roll features a V-groove geometry. This is the industry standard for solid wires (mild steel, stainless steel) because it provides necessary traction on the hard wire surface without deforming the cross-section of the wire. Deformation can lead to poor electrical contact at the contact tip or feeding issues within the liner. The KP665-035 utilizes a dual-groove design, allowing the operator to switch between wire sizes simply by reversing the roll, thereby maximizing the versatility of the welding power source without requiring multiple part numbers for standard wire diameters.

Proper tensioning and drive roll condition are paramount for arc stability. A worn drive roll can cause erratic feeding, often misdiagnosed as a voltage issue or a bad ground. By replacing worn components with this genuine Lincoln Electric part, operators ensure that the mechanical feed system delivers the wire smoothly through the gun liner, minimizing friction and preventing 'bird-nesting' at the feeder inlet. This component is essential for fabrication shops relying on the Pro-Mig series for light industrial and automotive applications.