Industrial RAD64007021 Liner Assembly

The RAD64007021 Liner Assembly is a 15-foot, spiral-wound MIG welding gun liner built from high-carbon spring steel to guide and reduce friction for welding wire as it travels through heavy-duty MIG gun cables. Designed for 300–500 A class systems, this OEM/industrial welding consumable supports wire diameters from 3/32" to 7/64" and is suited for steel and flux-cored welding feed applications. In industrial fabrication environments—such as structural steel shops, shipyards, railcar manufacturing, and general metal fabrication—it helps sustain smooth wire delivery over long cable runs, improving arc stability and minimizing feed disruptions. Maintenance technicians, welders, and OEM service teams select the RAD64007021 liner to replace worn or contaminated liners and restore stable wire feeding and welding gun performance. The 15 ft length and spiral-wound construction are paired with compatibility expectations for heavy-duty MIG gun assemblies in 300–500 A systems, and it is commonly referenced alongside replacements like Bernard 15 ft MIG liner (3/32–7/64), Profax 15-160 MIG liner assembly, and Lincoln Magnum PRO 3/32–7/64 liner kit (15 ft class).