Engineered Systems - November 2008 - (Page 49)

New Bearing Protection Ring Kits Speed Field Installation/Retroﬁt o simplify predictive/preventive motor maintenance programs, Electro Static Technology introduces two new Split-Ring™ AEGIS SGR Bearing Protection kits — one for NEMA motors and one for IEC motors. Developed for easy eld installation without disassembly of coupled equipment, these new Split-Ring kits are designed to provide clearance for shaft shoulders, slingers, and other end-bell protrusions while protecting bearings from electrical damage caused by circulating or shaft currents. Kits include the new split-ring SGR Bearing Protection Ring, which prevents bearing damage by safely channeling shaft currents to ground. Its conductive micro bers provide the path of least resistance to the motor frame. Kits also include a sturdy aluminum mounting plate and all mounting hardware. When used by HVAC service contractors, motor repair shops, and inhouse plant maintenance departments, the SGR Bearing Protection Ring dramatically extends motor life and prevents bearing noise, downtime, and costly motor repairs. Variable frequency drives (VFDs) induce currents on motor shafts which discharge through bearings, causing fusion craters on bearing race walls. Over time, this can lead to noise, vibration, bearing failure, and catastrophic motor failure. T covers less than ½" of the motor shaft. Split-Ring Kits are ordered by motor frame size. Standard-size kits t NEMA-frame motors with shaft diameters from 0.625" to 3.375" and IEC-frame motors with shaft diameters from 19mm to 95mm. Custom-size kits are also available. For more information, contact: Electro Static Technology, TEL: 1-866-738-1857, www.est-aegis.com. VFD-Induced Bearing Currents Kill Motors! Protect Bearings, Prevent Motor Failure! BEARING PROTECTION RING Unlike conventional shaft grounding brushes, the SGR ring is maintenance-free and lasts for the life of the motor, regardless of RPM. It works with virtually no friction or wear and is unaffected by dirt, grease, or other contaminants. Because the ring comes in halves and the mounting plate is U-shaped to t around the motor shaft, both can be installed without disconnecting the motor from coupled equipment. Secured to the motor with three screws, the mounting plate has slots to accommodate different motor designs and Safely channels harmful currents away from bearings to ground Easy field or OEM installation — in just minutes Maintenance-free, contaminationproof, lasts for life of motor Standard sizes for any motor Split mounting kit simpliﬁes ﬁeld installation on NEMA or IEC motors including those with shaft shoulders, slingers, or other end bell protrusions To download a free technical paper on bearing protection technologies, visit our website: 1-866-738-1857 | sales @ est-aegis.com www.est-aegis.com/es2 Input 113 at www.esmagazine.com/instantproductinfo Input 116 at www.esmagazine.com/instantproductinfo http://www.est-aegis.com http://www.est-aegis.com/es2 http://www.est-aegis.com/es2 http://www.esmagazine.com/instantproductinfo http://www.esmagazine.com/instantproductinfo

Table of Contents Feed for the Digital Edition of Engineered Systems - November 2008

Engineered Systems - November 2008 Contents Editor’s Note HVAC Challenge Back2Basics Case In Point Commissioning Building Automation HVACR Designer Tips Show Me The Motor Money The IAQ Top 10 Putting A Damper on Tragedy Special: Lighting Controls Computers & Software Products Glossary Classifieds Advertiser Index Tomorrow’s Environment

Engineered Systems - November 2008

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