www.foodengineeringmag.com/articles/87793-shaft-grounding-ring
Shaft grounding ring
July 1, 2010

Suited for IEEE 841 motors controlled by variable frequency drives in food and severe-duty processing applications, the Electro Static Technology AEGIS 841 SGR bearing isolator shaft grounding ring protects severe-duty motor bearings from harmful VFD-induced shaft currents; an IP56 non-contact seal withstands dust and powerful jetting water to protect bearings from contaminants. A bearing isolator features a patent-pending slinger drain system to prevent dirt and debris from plugging up the drain.
Electro Static Technology; 207-998-5140; www.est-aegis.com