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The ESAB 21155 Drive Roll is a critical component for maintaining the performance of your ESAB wire feeding systems. Featuring a precision-machined V-Groove, this roll is optimized for feeding 0.8mm (0.030") solid welding wires, such as ER70S-6 or stainless steel grades. Unlike knurled rolls which are designed for flux-cored wires, the smooth V-groove profile provides positive traction through friction without biting into or deforming the wire surface. This prevents the generation of metal shavings that can clog liners and contact tips, ensuring a cleaner wire path and more stable arc.
This drive roll is compatible with the ESAB MigMaster 250 and Mobile Feed 300 AVS units. Proper drive roll selection is paramount for achieving a consistent wire feed speed (WFS), which directly correlates to amperage in CV welding processes. A worn or incorrect drive roll can cause micro-stoppages or speed fluctuations, leading to burn-back, uneven bead profiles, and increased spatter. The 21155 is manufactured to strict tolerances to ensure perfect alignment with the wire guide and inlet, minimizing drag and friction.
Installation is straightforward, allowing operators to quickly swap rolls when changing wire sizes or replacing worn components. For professionals who demand reliability, using the correct drive roll geometry for the wire type is non-negotiable. This V-groove roll ensures that the feed pressure is applied effectively, driving the wire through the torch cable with consistent force, even in challenging positions or with longer gun cables.
| Additional Information |
|---|
| Brand:ESAB |
| Wire Size:0.030" |
| Wire Type:Solid |
| Fits Which Model:ESAB Migmaster 250, ESAB MobileFeed 300AVS |
| Packaging Description:1-per-each |
| Groove Type:V-Groove |
| Wire Diameter Metric:0.8mm |
| Material Compatibility:Mild Steel, Stainless Steel |
