For Shaft Diameters 3.436 - 3.480"

  • Unit price per 

Where to Buy

Mounting Options

 Clamp-On Shaft Grounding Rings

AEGIS® SGR Solid & Split Ring with Clamps

  • Ships with mounting clamps, 6-32 x 1/4 screws and washers
  • Quick and easy installation to most surfaces.
Bolt-Through Shaft Grounding Rings AEGIS® SGR Bolt Through Mounting
  • Ships with 6-32 x 1/2 flat head cap screws
  • 2 mounting holes up to shaft size 3.395" 
  • 4 mounting holes for larger sizes

Epoxy Mounted Shaft Grounding Rings

AEGIS® SGR Solid & Split Ring with Conductive Epoxy

  • Ships with EP2400 Conductive Epoxy
  • Quick and easy installation to most surfaces
  • No drilling and tapping
Press Fit Mounted Shaft Grounding Ring

AEGIS® SGR Press Fit Mounting

  • Clean dry press fit 0.002" to 0.004" 
  • Outer diameter 4.580 +0/-0.001"
  • Bore diameter 4.576 +0.001/-0"

Contact Customer Service for special requests.


Download PDF drawings:

      • Click here to download PDF installation instructions
      • Click here for the online version of of the instructions
      • Minimum Available Shaft Length: 0.375"

Reverse Fiber Diagram

If the available shaft length is less than 0.375", see the Custom Options tab.



 CS-015 Colloidal Silver

AEGIS® CS015 Colloidal Silver Shaft Coating

  • Recommended for all installations
  • Enhances the conductivity of the motor shaft surfaces
  • 20-25 applications based on a 3" shaft
    Item is Hazardous  Material Safety Data Sheet
EP2400 Epoxy

AEGIS® EP2400 Conductive Epoxy

  • Used to install the AEGIS® ring without drilling and tapping into motor bracket
  • Great for field retrofits.
    Item is Hazardous  Material Safety Data Sheet  Material Safety Data Sheet
High Frequency Grounding Straps

AEGIS HFGS High-Frequency Ground Strap

  • Ensures reliable conductive path from motor frame to ground
  • Standard 12" and 24" lengths
  • Pre-punched to fit bolts on standard motor foot sizes
Shaft Grounding Tester

AEGIS Shaft Voltage Tester

  • Detects presence and size of shaft voltage on running motors
  • Incorporate testing into preventive and predictive maintenance programs
  • Create test reports for customers or management
Custom Options

Reversed Fiber:

For short shaft shoulders, we offer the reversed fiber customization.  Reversed fiber SGRs fit shaft shoulders with between 0.1875” and 0.375” available.  If the shoulder is less than 0.1875” long, a uKIT must be used. 

Reverse Fiber

For part numbers for reversed fiber SGRs, custom hardware, spacers, additional bolt holes, or other modifications, contact Customer Service at or +1 207 998-5140.