Date: 2013-08-01

New Motor Shaft Grounding Ring Comes in Halves

New Motor Shaft Grounding Ring Comes in Halves



The new split-ring version of the AEGIS SGR Bearing Protection Ring™ comes in halves for easy field installation with little or no disassembly of equipment. For VFD-controlled AC and DC motors, the SGR Split Ring protects bearings from electrical damage caused by circulating or shaft currents, dramatically extending motor life as well as preventing bearing noise, downtime, and costly motor repairs/replacements. Additional information on bearing protection is available at www.est-aegis.com.

The SGR Split Ring simplifies predictive/preventive maintenance programs for motor repair shops, maintenance contractors, HVAC service contractors, and in-house plant maintenance departments. Unlike conventional shaft grounding brushes, the ring is maintenance-free and lasts for the life of the motor, regardless of RPM. Its conductive microfibers work with virtually no friction or wear; are unaffected by dirt, grease, or other contaminants. The SGR Split Ring is available from stock with mounting hardware in sizes to accommodate motor shafts up to 6" in diameter, and larger rings can be specially ordered.

When used to control motor speed, a variable frequency drive (VFD) induces currents on the motor shaft which discharge through bearings, causing fusion craters on bearing race walls. Over time, this can lead to noise, vibration, bearing failure, and catastrophic motor failure. The SGR Split Ring prevents bearing damage by channeling shaft currents to ground. Conductive microfibers in the ring provide the path of least resistance, allowing these shaft currents to discharge safely to the motor frame.

For more information, contact:
Adam Willwerth
Sales and Marketing Manager
Electro Static Technology
31 Winterbrook Road,
Mechanic Falls, ME 04256
Toll-Free: 1-866-738-1857
TEL: (207) 998-5140
FAX: (207) 998-5143

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