Shaft grounding ring
This bearing isolator shaft grounding ring protects bearings in VFD-driven IEEE 841 and other severe-duty motors.
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.
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After almost a decade of uncertainty, the confidence of plant floor managers is soaring. Even with a number of challenges and while implementing new technologies, there is a renewed sense of optimism among plant managers about their business and their future.
The respondents to the 2014 Plant Engineering Salary Survey come from throughout the U.S. and serve a variety of industries, but they are uniform in their optimism about manufacturing. This year’s survey found 79% consider manufacturing a secure career. That’s up from 75% in 2013 and significantly higher than the 63% figure when Plant Engineering first started asking that question a decade ago.