99222132 - Tweco RG-440-2 Replacement Shaft for Roto-Ground 9922-2132

Restore Precision to Your Rotary Grounding System

In the specialized field of pipe and vessel fabrication, the ability to weld rotating parts without tangling ground cables is essential for efficiency and safety. The Tweco Roto-Ground system is the industry standard for this application, providing a reliable moving ground connection. However, the internal components of these devices endure significant mechanical friction and high electrical loads. The Tweco RG-440-2 Shaft (9922-2132) is the genuine replacement central shaft designed specifically for the RG-440 Roto-Ground model, allowing you to rebuild your device to factory specifications.

The shaft serves as the core conductive element of the Roto-Ground. As the device rotates with your workpiece, the shaft maintains contact with internal brushes or tensioners to transfer the welding current. Over time, continuous rotation and high amperage can cause the shaft surface to become scored, pitted, or worn down. A compromised shaft increases electrical resistance, leading to heat buildup that can damage the entire unit and cause voltage drops at the arc. Replacing the shaft is a vital maintenance procedure that restores the low-resistance path required for high-quality welding.

Constructed from a durable, high-conductivity copper alloy, this replacement shaft is engineered to withstand the rigorous demands of industrial environments. It ensures a precise fit within the RG-440 housing, promoting smooth rotation without binding or wobbling. By maintaining your Roto-Ground with genuine Tweco parts, you ensure consistent grounding performance, protect your welding power source from resistance-related issues, and extend the operational life of your grounding equipment. This part is essential for shops handling automated pipe welding, tank fabrication, or any application utilizing rotary positioners.