Proven Shaft Grounding Solutions - Maintenance Free - Easy to Install The AEGIS? SGR shaft grounding ring dramatically extends bearing and motor life and increases system reliability by diverting shaft currents to ground. Product line includes the AEGIS? iPRO? for large medium voltage motors, turbines and generators; the conductive epoxy mounted split and no-split AEGIS? SGR Bearing Protection Ring that eliminates the need to drill into the motor; and the new AEGIS? Severe Duty SGR for extreme conditions. AEGIS? shaft grounding ring technology is maintenance-free and provides proven bearing protection from electrical bearing