0700004002 - ESAB NKK-1200 Rotary Earth Clamp 1200A

High-Performance Rotary Grounding Solution

The ESAB NKK-1200 Rotating Coupling (SKU: 0700004002) is a specialized industrial grounding device designed to facilitate the continuous rotation of workpieces during high-amperage welding processes. Engineered for heavy fabrication environments, this coupling is an essential component for automated welding setups, including pipe welding stations, tank turning rolls, and rotary positioners. By providing a stable, low-resistance electrical connection between the stationary power source and the rotating workpiece, the NKK-1200 ensures weld integrity while protecting welding cables from damage caused by twisting and torsion.

With a robust current capacity of 1200 Amperes, this device is capable of handling the demands of intensive welding processes such as Submerged Arc Welding (SAW), Flux-Cored Arc Welding (FCAW), and heavy-duty MIG/MAG applications. The coupling is constructed with high-conductivity materials and durable mechanical components to withstand the heat and mechanical stress typical of industrial manufacturing. Its design prioritizes consistent electrical contact, which is critical for preventing arc blow, voltage fluctuations, and poor weld bead appearance often associated with intermittent grounding.

Integration of the NKK-1200 into your welding fixture setup significantly improves operational efficiency. In traditional setups without a rotary ground, operators must frequently stop work to untangle ground leads or limit the rotation of the part. This coupling eliminates those downtime events, allowing for continuous, uninterrupted circumferential welds. The unit is designed for easy mounting onto standard fixtures and features maintenance-friendly attributes, such as grease fittings, to ensure smooth rotation and long-term reliability under heavy loads.

Whether you are fabricating pressure vessels, large diameter piping, or structural columns, the ESAB NKK-1200 provides the electrical continuity and mechanical freedom required for superior automated welding results. It represents a standard of quality and reliability expected from ESAB, a global leader in welding and cutting technologies.