The Miller 239811 is a specialized drive roll kit engineered for heavy-industrial welding applications utilizing large diameter flux-cored or metal-cored wires. Specifically designed to accommodate wire diameters of .068 inch, .072 inch, and 5\/64 inch, this kit features V-Knurled (VK) groove geometry. The knurled design is critical for tubular wires, as it provides the necessary mechanical grip (teeth) to push the wire through the liner and gun cable without requiring excessive drive roll tension that would otherwise deform or crush the hollow wire structure.<\/p>\n
This kit is intended for use with Miller SuitCase series wire feeders and systems configured for DuraFlux applications. The components are manufactured from hardened steel to withstand the abrasive nature of knurled feeding and the high duty cycles associated with structural steel fabrication and field construction. The kit is comprehensive, supplying not only the drive rolls but also the matching inlet and intermediate wire guides. These guides are essential for maintaining proper wire alignment as it enters the drive assembly, minimizing friction and preventing wire shaving or shaving buildup that can clog liners.<\/p>\n