The AEGIS SGR Bearing Protection Ring from Electro Static Technology can now be installed quickly and easily with conductive epoxy, eliminating the need to drill bracket holes in the motor’s end bell. For motors controlled by variable frequency drives (VFDs), the SGR channels harmful motor-shaft currents away from bearings and safely to ground, protecting them and extending their lives for a sustainable “green” solution. Installation of the SGR, whether by the motor manufacturer or end user, takes just minutes.  Unlike conventional grounding brushes, the ring is maintenance-free and works with virtually no friction or wear for the service life of the motor. 

While VFDs deliver impressive energy savings (up to 30 per cent or more), they also induce harmful currents on the shafts of the motors they control. These currents too often damage motor bearings and lead to costly downtime and premature motor failures. Without an effective means of shaft grounding, the currents will discharge through the bearings, causing pitting and fluting damage to the bearing race walls. Over time, this can lead to noise, vibration, and bearing failure, severely reducing the reliability of the entire system and wiping out any savings from using the VFD. Adding an AEGIS SGR to a VFD-driven motor produces a true inverter-duty motor, claims the company.  

Installing the SGR with conductive epoxy is said to take only minutes and eliminates the need to mark and drill holes in the motor’s end bell. The motor shaft and end bell must be clean and free of any coatings, paint, or other conductive material. The installer simply applies the adhesive to the back side of the SGR, centers the SGR around the motor shaft, and holds the ring in place to allow the adhesive to set. Units are guaranteed for one year from the date of purchase against defective materials and workmanship.

www.est-aegis.com

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