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Seal Protects Bearings in VFDs and Other Severe-Duty Motors

February 09, 2010
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The seal 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. The unit is ideally-suited for IEEE 841 motors controlled by variable frequency drives 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 seal combines a proven shaft grounding ring and a non-contact IP56 bearing isolator that withstands dust and powerful jetting water. The bearing isolator features a patent-pending Anti-Clog™ 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.
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