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AEGIS Shaft Grounding Ring White Paper

AEGIS® Handbook

AEGIS® Shaft Grounding Best Practices for New Motor Design, Motor Repair, Engineering Specifications, Shaft Voltage Testing, and Bearing Inspections.

Motor Repair Handbook

Best Practices and Service Portfolio for
Motor Repair and Service Providers
This handbook provides best industry practices for VFD driven motors to prevent bearing currents that cause fluted bearings and equipment downtime.
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The Handbook Contains:

  • Introduction-New Motor Repair Standards for Inverters
  • About VFD Induced Shaft Voltages & Bearing Currents
  • Bearing Frosting & Fluting
  • Cutting and Inspecting a Bearing
  • Shaft Grounding Best Practices
  • AEGIS® Shaft Grounding Technology

2013 Product of the Year Finalist

Updates Available

Motor Repair Handbook Updates and Corrections (check for updates).


Case Study- Cement Plant Case Study-Cement  Plant – Monarch Cement protects bearings with AEGIS® iPRO Grounding Rings (click on image to download)
Case Study Container Port Cranes Case Study-Container Port Cranes – Pacific Container Terminal adds the AEGIS® iPRO Grounding Rings to their cranes (click on image to download)
Bearing Inspection Report Bearing Inspection Report - click to download
(Word document)
Shaft Voltage Testing Report Shaft Voltage Testing Report - click to download
(Word document)
Pg36 of Motor Repair Handbook Selecting Correct Ring Size
Motor Repair  Sell Sheet Motor Repair Datasheet for Bearing Protection Best Practices


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