375980-050 - Tweco .035 V-Groove Drive Roll Kit for 4-Roll Feeders

Technical Specifications: Tweco 375980-050

The Tweco 375980-050 Drive Roll Kit is a genuine OEM replacement component designed for compatible Thermal Arc and Tweco wire feeding systems. This kit is specifically configured for 0.035" (0.9mm) solid welding wires, utilizing a V-Groove geometry that maximizes traction while preserving wire integrity. The kit is intended for use in 4-roll drive assemblies, which are standard in higher-amperage industrial feeders and multi-process machines requiring long-distance wire delivery.

Construction and Performance

Manufactured from hardened steel, these drive rolls are built to withstand the abrasive nature of copper-coated and bare steel wires. The concentricity of the rolls is tightly controlled during manufacturing to prevent camming or pulsing of the wire feed, which can manifest as arc instability or "stuttering" at the contact tip. The V-groove profile is precision-ground to match the .035" wire tolerance, ensuring that the feed force is applied efficiently. In a 4-roll system, this kit typically includes the necessary driven rolls to engage the wire from both the top and bottom (or via a geared mechanism), providing a slip-free feed path even when the gun cable is bent or long.

Maintenance and Installation

Proper installation of the 375980-050 kit is vital for optimal performance. Operators should ensure that the rolls are aligned with the wire guide tubes and that the pressure arm tension is set according to the machine's specifications. Over-tensioning V-groove rolls can flatten solid wire, causing it to drag in the contact tip. Conversely, under-tensioning leads to slippage and shaving generation. Regular inspection of the V-groove for wear or debris accumulation is recommended. If the groove becomes worn or widened, traction is lost, and the rolls should be replaced immediately to maintain weld parameters.