21156 - ESAB Mig 4HD Drive Roll Kit .035/.045 V-Groove

Precision Wire Delivery for ESAB Systems

The integrity of a welding arc is fundamentally tied to the consistency of the wire feed speed. In professional industrial environments utilizing ESAB equipment, the ESAB Drive Roll .035/.045 V Groove represents a critical component for maintaining that consistency. Designed specifically for the Mig 4HD and related wire feed systems (including the MigMaster and MobileMaster series), this drive roll kit is engineered to strict OEM tolerances. The V-groove geometry is specifically machined to grip solid wires—such as mild steel and stainless steel—providing the necessary traction to push the wire through the liner and torch without deforming the wire's cross-sectional shape.

Deformation of the welding wire at the drive rolls can lead to poor electrical contact at the contact tip, resulting in micro-arcing and unstable transfer modes. This ESAB drive roll features a hardened steel construction that resists wear even under high-duty cycle operations. The dual-groove design offers versatility, allowing operators to switch between 0.035-inch and 0.045-inch wire diameters simply by reversing or adjusting the roll orientation, depending on the specific feeder setup. This flexibility reduces inventory requirements and downtime during changeovers.

Proper drive roll selection is a cornerstone of preventative maintenance in welding automation and manual fabrication. Using the correct V-groove for solid wire prevents the accumulation of metal shavings often caused by using knurled rolls on soft wires or incorrect groove sizes. This kit ensures that your ESAB Mig 4HD feeder operates at peak efficiency, delivering wire smoothly for uniform bead appearance and reliable penetration profiles.

Technical Compatibility

• Groove Profile: V-Groove (Smooth) for Solid Wire
• Wire Diameters: 0.035" (0.9mm) and 0.045" (1.2mm)
• Feeder Compatibility: Mig 4HD, Dip Pak 250, MigMaster 250/251/300i, MobileMaster 2, Aristo Feeders