--- title: Why Buy Motors with Shaft Grounding Rings Installed description: Most major motor manufacturers offer motors with AEGIS Shaft Grounding Rings factory-installed. Here are a few reasons why that's a great option. image: https://blog.est-aegis.com/hubfs/Imported_Blog_Media/jpeg-1.jpeg --- [![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) # Four Reasons to Buy Motors with AEGIS Installed [Home](https://www.est-aegis.com/) » [Blog](https://blog.est-aegis.com/) » Four Reasons to Buy Motors with AEGIS Installed [AEGIS](https://blog.est-aegis.com/author/estaegis) Oct 18, 2023 ![jpeg-1](https://blog.est-aegis.com/hs-fs/hubfs/Imported_Blog_Media/jpeg-1.jpeg?width=300&height=176&name=jpeg-1.jpeg)[AEGIS® Shaft Grounding Rings](https://www.est-aegis.com/product/sgr/) offer essential protection against electrical bearing damage for motors on VFDs.  AEGIS rings can be retrofitted to in-service motors, but the best way to get AEGIS protection on your motor is probably to purchase a new motor with AEGIS factory-installed.  Here are four reasons why. ## 4 Reasons to Buy Motors with AEGIS Rings Installed ### 1. It saves time: Buying a motor with an AEGIS ring factory-installed saves you the time of finding the right grounding ring for your motor, and the effort of installing the ring.  Offerings vary by motor manufacturer and product line, but AEGIS is available both standard and as a mod. ### 2.  It saves money: The cost of a motor with AEGIS already installed is less than the cost of the motor and ring separately.  On top of this, you save the cost of installation. ### 3.  No risk of improper installation: Major motor brands like Baldor (ABB), U.S. Motors (Nidec), Marathon, LEESON, WEG Electric, and G.E. Industrial Motors have installed hundreds of thousands of shaft grounding rings in their motors.  They know exactly how to install AEGIS rings according to our best practices.  As an added bonus, most motors get the grounding ring factory-installed *inside* the motor, protecting it from any potential environmental damage or contamination. ### 4.  The AEGIS 2-Year Extended Warranty: New motors typically come with a one to five-year warranty from the manufacturer.  But typically, bearing failure is only covered for a fraction of that time, under the logic that they will fail quickly if something is wrong with the bearings.  But this doesn't take into account the risk of bearing fluting due to VFD-sourced electrical damage, which takes months to years to cause failure.  That's why the [AEGIS 2-Year Extended Warranty](https://www.est-aegis.com/product/extended-warranty/) extends protection against fluting damage for two years after installation.  No other shaft grounding device offers a warranty like this. [![2-Year Extended Warranty](https://no-cache.hubspot.com/cta/default/20974229/3b258d08-3058-4c7f-a866-2991b627f2e0.png)](https://cta-redirect.hubspot.com/cta/redirect/20974229/3b258d08-3058-4c7f-a866-2991b627f2e0) To learn more about AEGIS shaft grounding and best practices for electrical bearing protection, [sign up for a training](https://www.est-aegis.com/resources/training/). We offer monthly live training webinars, and we can also visit your facility to review your exact application. [![Sign Up For Training](https://no-cache.hubspot.com/cta/default/20974229/69dd56c7-bbd1-4ad0-ae5c-29de322039f0.png)](https://cta-redirect.hubspot.com/cta/redirect/20974229/69dd56c7-bbd1-4ad0-ae5c-29de322039f0) [2-Year AEGIS Warranty](https://blog.est-aegis.com/tag/2-year-aegis-warranty), [Motors with AEGIS Installed](https://blog.est-aegis.com/tag/motors-with-aegis-installed) ### Subscribe To Our Blog ## Read On ### [Permanent Magnet AC Motors Need Shaft Grounding](https://blog.est-aegis.com/permanent-magnet-ac-motors-need-shaft-grounding?hsLang=en-us) Permanent magnet ac (PMAC) motors are an increasingly popular substitute for induction motors. They... ### [Marathon Motors with Bearing Current Protection](https://blog.est-aegis.com/marathon-motors-with-bearing-current-protection?hsLang=en-us) In its long history, Marathon Motors has seen some changes. When they produced their first washing... ### [WEG Explosion Proof Motors Now Offer an AEGIS Option](https://blog.est-aegis.com/weg-explosion-proof-motors-now-offer-an-aegis-option?hsLang=en-us) In less than sixty years, WEG Electric has grown from being a local Brazilian motor manufacturer to... 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