AEGIS® Bearing Protection - Why Shaft Grounding?


Best Practices

Motors with Cylindrical Roller, Babbitt or Sleeve Bearings:
NOTE: if an insulated cylindrical roller bearing sleeve is not possible, then
isolate the opposite bearing and install an AEGIS® Ring at the cylindrical roller bearing side.
Install AEGIS® Ring on opposite end of insulation.

  • Cylindrical Roller Bearing, Babbitt, or Sleeve bearing: Bearing housing should be isolated or use insulated bearing.
  • Motors with insulated cylindrical roller bearing DE: Install AEGIS® Bearing Protection Ring on opposite drive end (NDE).
  • AEGIS® Ring can be installed internally on the back of the bearing cap or externally on the motor end bracket.
  • Colloidal Silver Shaft Coating PN CS015 is required for this type of application.

Product recommendation:


Application notes are intended as general guidance to assist with proper application of AEGIS® Bearing Protection Ring to protect motor bearings. All statements and technical information contained in the application notes are rendered in good faith. User must assume responsibility to determine suitability of the product for its intended use.

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