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999330 - ESAB .045 Knurled Drive Roll Kit for MigMaster & MobileMaster 4-Roll Systems

Packaging: 1 of each

Sorry, product has been discontinued by the vendor.

SKU: ESB999330 Categories: ,

OVERVIEW

Genuine ESAB 999330 Drive Roll Kit for Industrial Wire Feeding

The ESAB 999330 Drive Roll Kit is a critical component for maintaining precision wire feeding in heavy-duty industrial welding applications. Engineered specifically for .045-inch (1.2mm) welding wires, this kit features a knurled groove design. Knurled rolls are essential when working with flux-cored (FCAW) or metal-cored (MCAW) wires, as the textured surface bites into the wire's shell to provide positive traction without the excessive pressure that can deform tubular wires. This ensures a stable arc and reduces the likelihood of feed stoppages or "bird-nesting" at the feeder inlet.

This kit is designed for 4-roll wire feed systems, providing a complete solution for upgrading or replacing worn rolls in compatible ESAB equipment. It is directly compatible with a wide range of legacy and current ESAB machines, including the MigMaster® 250, 251, and 300i, as well as the MobileMaster 2 and select Aristo® wire feeders. Using genuine OEM parts like the 999330 ensures that the drive roll geometry matches the wire guide alignment perfectly, minimizing wear on the wire liner and contact tip.

Constructed from hardened steel, these rolls are built to withstand the abrasive nature of knurled feeding and the rigors of continuous industrial use. Proper drive roll selection is the first step in achieving high-quality welds; by matching the roll groove to your specific wire type and diameter, you eliminate one of the most common variables in welding troubleshooting.

Key Specifications

  • Part Number: 999330
  • Wire Diameter: .045" (1.2mm)
  • Groove Style: Knurled (for Flux-Cored/Metal-Cored)
  • System Type: 4-Roll Configuration
Additional Information
Packaging Description:1 of each, 1 Per Ea
Brand:Esab
Fits Which Model:Dip Pak 250 Mig 2E Mig 4HD MigMaster® 250/251/300i MobileMaster 2 And Aristo® Wire Feeders, Esab Migmaster 250
Wire Type:Flux Core or Metal Core
Wire Size:0.045
2 or 4 roll:4 roll
Groove Type:Knurled
Compatible Wire Material:Flux-Cored, Metal-Cored
System Compatibility:4-Roll Drive Systems

INCLUDED

  • Set of Knurled Drive Rolls (for 4-roll system)
  • Installation instructions
  • Packaging

APPLICATIONS

  • Structural steel fabrication using Flux-Cored Arc Welding (FCAW)
  • Heavy equipment repair with Metal-Cored wires
  • Industrial manufacturing using ESAB MigMaster series welders
  • Field welding applications requiring reliable wire feeding

FAQ

This drive roll kit is specifically designed for .045-inch (1.2mm) welding wire.

It is not recommended. Knurled rolls are designed for flux-cored or metal-cored wire. Using them on solid wire can create metal shavings that clog liners and tips.

It fits 4-roll systems including the MigMaster 250, 251, 300i, MobileMaster 2, Dip Pak 250, and select Aristo feeders.

Flux-cored wire is tubular and softer than solid wire. Knurled rolls provide traction without needing excessive pressure that would crush or deform the wire.

Yes, this kit contains the necessary rolls to outfit a 4-roll wire feed system.

Drive rolls should be replaced when the knurling becomes dull and the wire begins to slip despite correct tension settings, or if the groove is worn out of tolerance.

No, aluminum wire requires U-groove drive rolls to prevent deformation and shaving. Knurled rolls will damage aluminum wire.