AEGIS® Bearing Protection - Why Shaft Grounding?


Best Practices

Motors Greater than 100HP (75kW)

Motors Grater than 100HP
                       Install AEGIS® Ring on opposite end of insulation

For horizontally mounted motors with single row radial ball bearings on both ends of the motor:

  • Non-Drive end: Bearing housing must be isolated with insulated sleeve or coating or use insulated ceramic or hybrid bearing to disrupt circulating currents.
  • Drive end: Install one AEGIS® Bearing Protection Ring .
  •      Note: The recommendation above is the preferred configuration for most applications. Contact with any questions.
  • AEGIS® Ring can be installed internally on the back of the bearing cap or externally on the motor end bracket.
  • Use AEGIS® Colloidal Silver Shaft Coating (PN# CS015) on motor shaft where fibers touch.

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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