MOTION CONTROL: The new AEGISTM 841 SGR Bearing Isolator Shaft Grounding Ring protects severe-duty motor bearings from harmful VFD-induced shaft currents with a proven shaft grounding ring and from contaminants with an IP56 non-contact seal. Institute of Electrical and Electronics Engineers (IEEE) Standard 841-2001 calls for protection against bearing damage by VFD-induced currents in addition to bearing seals. The AEGISTM 841 SGR is ideally suited for IEEE 841 motors controlled by variable frequency drives (VFDs) in petrochemical, pulp and paper, food, mining, and other severe-duty processing applications.Traditional bearing seals provide only half the protection needed by VFD-controlled IEEE 841 and other severe-duty motors. Designed for long-term total bearing protection, the AEGISTM 841 SGR combines a proven shaft grounding ring (in which conductive microfibers completely surround the motor shaft) and a non-contact IP56 bearing isolator that withstands dust and powerful jetting water (providing even greater protection against contaminants than is required by IEEE Standard 841). The AEGISTM shaft grounding ring has been proven in hundreds of thousands of installations worldwide to protect bearings from harmful currents and extend motor life. By diverting VFD-induced shaft currents around bearings safely to ground, the ring protects them from electrical damage known as “bearing fluting” that can lead to noise and vibration and result in motor failure. The AEGISTM 841 SGR’s bearing isolator features a patent-pending Anti-ClogTM slinger drain system to prevent dirt and debris from plugging up the drain and compromising performance. The slinger’s unique design chops and ejects foreign matter, keeping the drain running free.
Electro Static Technology, the manufacturer of the new AEGISTM 841 SGR, is a global leader in the elimination or mitigation of induced electrical charges on moving surfaces. EST is a division of Illinois Tool Works (ITW), an $18 billion multinational diversified manufacturing company operating in 44 countries.
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