The Tweco RG-440 Roto-Ground Clamp is a specialized grounding device engineered to solve one of the most persistent challenges in pipe and vessel fabrication: cable management during rotation. In automated or semi-automated welding processes where the workpiece must rotate—such as on turning rolls or positioners—standard ground clamps quickly become a liability. As the piece turns, static cables twist, knot, and eventually fail, leading to arc instability, overheating, and potential safety hazards. The RG-440 eliminates this entirely by allowing the ground connection to rotate freely with the workpiece.
Constructed from high-conductivity copper alloy, the RG-440 is built to handle substantial welding currents with minimal voltage drop. Rated for 440 Amps, it is robust enough for heavy-duty MIG, TIG, and Stick applications found in shipyards, pressure vessel manufacturing, and large-bore pipe welding. The internal mechanism ensures a constant, low-resistance electrical contact between the stationary cable and the rotating head, preventing the arcing and pitting that can occur with inferior rotary grounds.
Installation of the Tweco Roto-Ground is straightforward, designed to integrate into existing fixtures or attach directly to the workpiece setup. By maintaining a stable ground connection regardless of rotation speed or duration, the RG-440 ensures weld quality remains consistent. Inconsistent grounding is a leading cause of porosity and erratic arc behavior; using a dedicated rotary ground like the RG-440 removes this variable, allowing operators to focus on the weld puddle rather than untangling cables.
Durability is a hallmark of the Tweco brand, and the RG-440 is no exception. It is designed to withstand the harsh environment of industrial shops, resisting heat, spatter, and mechanical impact. For maintenance teams and fabrication managers looking to improve shop efficiency and reduce cable replacement costs, the Tweco RG-440 is an essential investment.
| Additional Information |
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| Brand:Tweco |
| Amperage:440 |
| Item:Ground Clamp |
| Packaging Description:pack of 1 |
| Model:RG-440 |
| Device Type:Rotary Ground Device |
| Material:Copper Alloy |
| Application:Rotary Weldments, Pipe Fabrication |
