36861 - ESAB 3/64 Aluminum U-Groove Drive Roll for MigMaster Series

Precision Engineering for Aluminum Wire Feeding

The ESAB 36861 Drive Roll is a specialized component engineered to address the unique challenges of feeding aluminum welding wire. Unlike steel wires, aluminum is soft and susceptible to deformation when subjected to the compressive forces of a wire feeder. Standard V-groove rolls, while effective for hard wires, can distort the cross-section of aluminum wire or shave off small metal flakes. These shavings accumulate in the liner and contact tip, leading to friction, erratic feeding, and eventual burn-back. The 36861 features a precision-machined U-groove profile that cradles the 3/64-inch wire, providing sufficient traction for feeding without compromising the wire's structural integrity or surface finish.

Designed for compatibility with a broad spectrum of ESAB equipment, this drive roll fits the MigMaster® 250, 251, and 300i series, as well as MobileMaster 2 and select Aristo® wire feeders. The roll is manufactured from high-quality hardened steel to resist wear, ensuring that the groove geometry remains consistent over extended periods of use. Proper drive roll selection is critical for maintaining the stability of the welding arc, particularly in automated or high-duty-cycle applications where feed interruptions can result in costly rework. By maintaining the roundness of the wire, this U-groove roll ensures optimal electrical contact at the tip and smooth transfer to the weld pool.

Installation of the 36861 is straightforward, adhering to the standard mounting mechanisms of the compatible ESAB feeders. It is an essential upgrade or replacement part for any fabrication shop transitioning to or maintaining aluminum welding operations. Whether used in general fabrication, automotive repair, or marine construction, this drive roll provides the mechanical reliability necessary for high-quality aluminum MIG welding.