Processing Magazine

Shaft Grounding Ring Protects Medium-Voltage Motors from Bearing Failure

September 22, 2010

The bearing protection ring extends the life of medium-voltage motors and improves the reliability of systems in which they are used by safely channeling harmful electrical currents away from bearings to ground. Specially designed for high-current applications, the unit is ideal for protecting generators, turbines, and medium-voltage motors against electrical bearing damage. The ring prevents damage that could otherwise lead to generator or motor failure, unplanned downtime, costly repairs, and lost revenues. It is available in a range of sizes to accommodate generator/motor shafts up to 30-inch in diameter. To facilitate field retrofits, the split-ring comes in mating halves that simplify installation around the shafts of coupled equipment. The ring is ideal for medium-voltage motors that drive pumps, compressors, mixers, shredders, conveyors, and other machinery used in mining, food processing, wastewater treatment, petrochemical refining, and many other applications. It is also ideal for protecting the bearings of generators in both utility and on-site power generation systems.