--- title: What is Shaft Grounding? | AEGIS® Blog (5) description: News and articles about AEGIS® Shaft Grounding Rings and other elements of electric motor reliability. (5) --- [![Electro Static Technology](https://blog.est-aegis.com/hubfs/raw_assets/public/public/images/electro-static-technology.svg "Electro Static Technology")](https://www.est-aegis.com/) [![Aegis](https://blog.est-aegis.com/hubfs/raw_assets/public/public/images/Aegis.svg "Aegis")](https://www.est-aegis.com/) - [+1 866-738-1857](tel:+1%20866-738-1857) - [Products](https://www.est-aegis.com/products/) - [AEGIS® SGR – for motors under 500 HP/375 kW](https://www.est-aegis.com/product/sgr/) - [AEGIS® uKIT – for common NEMA/IEC frame size](https://www.est-aegis.com/product/sgr-ukit/) - [AEGIS® RPPR – for reactor recirculating pumps](https://www.est-aegis.com/rppr-resources/) - [AEGIS® EV and EVO Rings - for electric vehicles](https://www.est-aegis.com/product/ev-evo-rings/) - [AEGIS® PRO Series – for motors over 300 HP/225 kW](https://www.est-aegis.com/product/pro-series/) - [Shaft Voltage Testing and Accessories](https://www.est-aegis.com/product/mounting-accessories/) - [Online Product Catalog](https://catalog.est-aegis.com/) - [AEGIS® 2-Year Extended Warranty](https://www.est-aegis.com/product/extended-warranty/) - [Applications](https://www.est-aegis.com/applications/) - [Electric Vehicle Solutions](https://www.est-aegis.com/applications/electric-vehicle-solutions/) - [Food & Beverage](https://www.est-aegis.com/applications/food-beverage/) - [HVAC](https://www.est-aegis.com/applications/hvac/) - [Industrial & Chemical](https://www.est-aegis.com/applications/industrial-chemical/) - [Other Industries](https://www.est-aegis.com/applications/other-industries/) - [Power Generation & Renewable Energy](https://www.est-aegis.com/applications/power-generation-renewable-energy/) - [Transportation](https://www.est-aegis.com/applications/transportation/) - [Water Treatment](https://www.est-aegis.com/applications/water-treatment/) - [Bearing Protection](https://www.est-aegis.com/bearing-protection/) - [Shaft Voltage & Bearing Currents](https://www.est-aegis.com/bearing-protection/shaft-voltage-and-bearing-currents/) - [Fluting & Bearing Inspection](https://www.est-aegis.com/bearing-protection/fluting-and-bearing-inspection/) - [Best Practices & Installation](https://www.est-aegis.com/bearing-protection/best-practices-and-installation/) - [Resources](https://www.est-aegis.com/resources/) - [AEGIS® Bearing Protection Handbook](https://www.est-aegis.com/resources/handbook/) - [IEEE-841, Hazardous Locations, & AEGIS®](https://info.est-aegis.com/technical-codes-and-ieee-841-standards) - [Recorded Webinars Library](https://www.est-aegis.com/resources/recorded-webinars/) - [Installation Instructions](https://www.est-aegis.com/resources/installation-instructions/) - [Videos](https://www.est-aegis.com/resources/videos/) - [Technical Papers](https://www.est-aegis.com/resources/technical-papers/) - [Case Studies](https://www.est-aegis.com/resources/case-studies/) - [Specifying AEGIS®](https://www.est-aegis.com/resources/specifying-aegis/) - [Request Training](https://www.est-aegis.com/resources/training/) - [Product Sheets](https://www.est-aegis.com/resources/product-sheets/) - [About](https://www.est-aegis.com/about/) - [News](https://blog.est-aegis.com/) - [Tradeshows](https://www.est-aegis.com/about/tradeshows/) - [Blog](https://blog.est-aegis.com/) - [Where to Buy](https://www.est-aegis.com/where-to-buy/) - [Distributors](https://www.est-aegis.com/where-to-buy/distributors?type=Distributor) - [Trained Installers](https://www.est-aegis.com/where-to-buy/installers?type=Installer) - [Explosion Proof Installers](https://www.est-aegis.com/where-to-buy/installers?type=Explosion%20Proof%20Installer) - [Motors & Seals with AEGIS® Installed](https://www.est-aegis.com/where-to-buy/oems-with-aegis/) [Contact Us](https://www.est-aegis.com/contact/) - [+1 866-738-1857](tel:+1%20866-738-1857)     [Home](https://www.est-aegis.com/) » Blog #   Blog [![Mining cars in a precious metal mine](https://blog.est-aegis.com/hs-fs/hubfs/minecarts_dreamstime_s_52427722.jpg?width=365&name=minecarts_dreamstime_s_52427722.jpg)](https://blog.est-aegis.com/variable-frequency-drives-in-mining?hsLang=en-us) ## [Variable Frequency Drives in Mining](https://blog.est-aegis.com/variable-frequency-drives-in-mining?hsLang=en-us) Mining has been vital to civilization since at least the Bronze Age. In today’s electrified world,... [Read More](https://blog.est-aegis.com/variable-frequency-drives-in-mining?hsLang=en-us) [![chart ](https://blog.est-aegis.com/hs-fs/hubfs/Pitting-Discharge-Event.jpg?width=365&name=Pitting-Discharge-Event.jpg)](https://blog.est-aegis.com/resistance-is-futile?hsLang=en-us) ## [AEGIS Rings' Resistance Isn't Everything](https://blog.est-aegis.com/resistance-is-futile?hsLang=en-us) We recently wrote about how the static resistance of an AEGIS ring (measured with a multimeter) is... [Read More](https://blog.est-aegis.com/resistance-is-futile?hsLang=en-us) [![Hvac systems](https://blog.est-aegis.com/hs-fs/hubfs/AdobeStock_276554572.jpeg?width=365&name=AdobeStock_276554572.jpeg)](https://blog.est-aegis.com/what-is-vfd-in-hvac?hsLang=en-us) ## [What are Variable Frequency Drive Applications in HVAC Systems?](https://blog.est-aegis.com/what-is-vfd-in-hvac?hsLang=en-us) For the past few decades, the use of variable frequency drives (VFDs) in the motors of heating,... [Read More](https://blog.est-aegis.com/what-is-vfd-in-hvac?hsLang=en-us) [![chart ](https://blog.est-aegis.com/hs-fs/hubfs/ohmmeter.jpg?width=365&name=ohmmeter.jpg)](https://blog.est-aegis.com/what-is-the-resistance-of-an-aegis-ring?hsLang=en-us) ## [What is the Resistance of an AEGIS Ring?](https://blog.est-aegis.com/what-is-the-resistance-of-an-aegis-ring?hsLang=en-us) We get a lot of questions about the resistance (ohms) of our AEGIS Shaft Grounding Rings. Fair... [Read More](https://blog.est-aegis.com/what-is-the-resistance-of-an-aegis-ring?hsLang=en-us) [![shaft grounding ring](https://blog.est-aegis.com/hs-fs/hubfs/SGR-Group_NoBG-1536x1152.png.webp?width=365&name=SGR-Group_NoBG-1536x1152.png.webp)](https://blog.est-aegis.com/why-vfd-controlled-motors-need-shaft-grounding?hsLang=en-us) ## [Why VFD-Controlled Motors Need Shaft Grounding](https://blog.est-aegis.com/why-vfd-controlled-motors-need-shaft-grounding?hsLang=en-us) Premature failure can be a real problem in an AC motor equipped with a variable frequency drive... [Read More](https://blog.est-aegis.com/why-vfd-controlled-motors-need-shaft-grounding?hsLang=en-us) [![chart ](https://blog.est-aegis.com/hs-fs/hubfs/product-selector-end.png?width=365&name=product-selector-end.png)](https://blog.est-aegis.com/how-do-i-find-the-part-number-for-aegis-ring?hsLang=en-us) ## [How Do I Find the Part Number of an SGR for My Motor?](https://blog.est-aegis.com/how-do-i-find-the-part-number-for-aegis-ring?hsLang=en-us) We have written about choosing a mounting style for AEGIS® Shaft Grounding Ring - [here](https://blog.est-aegis.com/how-to-choose-an-aegis-ring-part-1?hsLang=en-us), [here](https://blog.est-aegis.com/how-to-choose-an-aegis-ring-part-2?hsLang=en-us), and [...](https://blog.est-aegis.com/how-to-choose-an-aegis-ring-part-3?hsLang=en-us) [Read More](https://blog.est-aegis.com/how-do-i-find-the-part-number-for-aegis-ring?hsLang=en-us) [![geothermal energy plant](https://blog.est-aegis.com/hs-fs/hubfs/Power_Geothermal-Plant-Pipes_2737x1825.jpg?width=365&name=Power_Geothermal-Plant-Pipes_2737x1825.jpg)](https://blog.est-aegis.com/the-importance-of-motor-performance-in-the-renewable-energy-industry?hsLang=en-us) ## [Renewable Energy Industry: Motor Bearing Performance and Reliability](https://blog.est-aegis.com/the-importance-of-motor-performance-in-the-renewable-energy-industry?hsLang=en-us) The use of renewable energy has increased rapidly over the past couple of decades, with wind,... [Read More](https://blog.est-aegis.com/the-importance-of-motor-performance-in-the-renewable-energy-industry?hsLang=en-us) [![frosting and fluting](https://blog.est-aegis.com/hs-fs/hubfs/plant-stopped-public-domain-pictures-1494264330MSQ.jpg?width=365&name=plant-stopped-public-domain-pictures-1494264330MSQ.jpg)](https://blog.est-aegis.com/the-cost-of-unplanned-production-downtime?hsLang=en-us) ## [The Cost of Unplanned Production Downtime](https://blog.est-aegis.com/the-cost-of-unplanned-production-downtime?hsLang=en-us) In manufacturing, unplanned downtime costs are huge and only getting more significant. According to [Read More](https://blog.est-aegis.com/the-cost-of-unplanned-production-downtime?hsLang=en-us) [![](https://blog.est-aegis.com/hs-fs/hubfs/clamp-on.jpg?width=365&name=clamp-on.jpg)](https://blog.est-aegis.com/shaft-grounding-devices-the-economical-solution?hsLang=en-us) ## [How Shaft Grounding Devices Are Actually the Economical Solution](https://blog.est-aegis.com/shaft-grounding-devices-the-economical-solution?hsLang=en-us) Shaft grounding devices help minimize voltage on a motor’s shaft, preventing damage caused by... 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