The AEGIS SGR Conductive MicroFiber Shaft Grounding Brush is designed to improve the reliability of HVAC/R systems by dramatically extending motor life. By protecting bearings from electrical damage for the life of the motor, the AEGIS SGR prevents bearing noise and costly motor repairs and downtime. It is suitable for OEM motor and fan manufacturers, repair shops, HVAC service contractors, and in-house maintenance departments. It can be easily installed as part of a preventive maintenance program. When AC motors, commonly used in HVAC/R systems to drive fans, air pumps, chillwater pumps, compressors, and other air-handling equipment, are employed with variable frequency drives, currents are induced on the motor shafts. By safely channeling harmful shaft current away from the motor bearings to ground, the AEGIS SGR prevents electrical bearing damage, and the noise and motor failures it causes.