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406985 - Tweco 406985 Replacement Insulated Drive Gear

Packaging: pack of 1
$234.77/EA $148.99/pack of 1 only $148.99/EASave 37%

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OVERVIEW

Restore Smooth Wire Feeding with the Tweco 406985 Gear

Is your wire feeder starting to stutter, slip, or make grinding noises? The issue might be buried deep in the drive mechanism. The Tweco 406985 Insulated Drive Gear is the genuine replacement part you need to get your machine running smoothly again. As a welder, you know that a consistent wire feed is the heartbeat of a good MIG weld. If your drive gear is stripped, worn down, or cracked, your wire speed will fluctuate, leading to burn-backs, bird-nesting, and a frustratingly unstable arc. Replacing the gear is often the fix that brings your trusty feeder back to life.

This isn't just any gear; it is an insulated drive gear. This is crucial because it helps keep the welding current where it belongs—in the wire—and stops it from arcing out against the motor or the machine case. Using a non-insulated or makeshift gear could damage your machine's motor or control board. Tweco has designed this part to handle the heat and stress of a welding environment, ensuring it won't warp or fail when you are in the middle of a long bead. It is built tough to handle the torque required to push wire through long liners and twisted gun cables.

Don't let a small part hold up your production or ruin your project. Swapping out a worn drive gear is a smart maintenance move that extends the life of your welder. This OEM part guarantees a perfect fit, so you don't have to worry about it jamming or not meshing correctly with your other drive rolls. Whether you are repairing an older shop machine or maintaining a fleet of feeders, keeping a spare 406985 gear on hand ensures you are always ready to tackle mechanical issues head-on.

Key Benefits for the Welder:

  • Smooth Feeding: Eliminates the slipping that causes arc stutter.
  • Safety First: Insulated design protects your machine's electronics.
  • Perfect Fit: Genuine Tweco part means no modifications needed.
  • Durable: Stands up to the daily grind of industrial welding.
Additional Information
Brand:Tweco
Packaging Description:1 Per Ea
Product Type:Insulated Drive Gear
Part Number:406985
Application:Wire Feeder Repair
Material:Composite/Insulated Material

INCLUDED

  • 1 x Tweco Insulated Drive Gear (406985)

APPLICATIONS

  • Repair of Tweco and Thermal Arc wire feeders
  • Replacement of worn or stripped drive gears
  • Maintenance of MIG welding wire drive assemblies
  • Restoration of electrical isolation in drive systems

FAQ

It transmits torque from the motor to the drive rolls to feed welding wire while providing electrical insulation.

Insulation is required to prevent the welding current (which travels through the wire) from shorting out to the motor or feeder chassis.

Signs of wear include slipping wire, grinding noises from the feeder, visible damage to the gear teeth, or inconsistent wire feed speeds.

Yes, this is a genuine OEM Tweco / ESAB replacement part, ensuring proper fit and material specifications.

No, if the original specification calls for an insulated gear, using a non-insulated metal gear can cause electrical shorts and damage your welder.

Typically, you will need basic hand tools like a wrench or screwdriver to open the feeder housing and remove the retaining clips or screws holding the gear.

No, this item is the drive gear only. Drive rolls are sold separately based on the wire size you are using.

No, it is designed for specific models. Please check your welder's parts manual or schematic to confirm the part number 406985 matches.