Shaft grounding ring

This bearing isolator shaft grounding ring protects bearings in VFD-driven IEEE 841 and other severe-duty motors.

02/06/2010


AEGIS 841 SGR bearing isolator shaft grounding ring
The AEGIS 841 SGR bearing isolator shaft grounding ringprotects severe-duty motor bearings from harmful VFD-induced shaft currentswith a proven shaft grounding ring, and from contaminants with an IP56non-contact seal. IEEE Standard 841-2001 calls for protection against bearingdamage by VFD-induced currents in addition to bearing seals.


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 AEGIS 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 AEGIS 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 AEGIS 841 SGR's bearing isolator features an Anti-Clog

slinger drain system to prevent dirt and debris from plugging the drain and

compromising performance. The slinger's unique design chops and ejects foreign

matter, keeping the drain running free.

Electro StaticTechnology

www.est-aegis.com



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