Installation Notes

AEGIS Shaft Grounding Ring Kit for NEMA & IEC Motors

Installation Guide:

1. Shaft must be clean & free of any coatings, paint, or other nonconductive material. Lightly sand shaft to remove any oxide coating.
2. SGR™ should not operate or come in contact with the keyway during operation. If necessary, adjust or change spacer and screw lengths.
3. Use a rotating motion when sliding SGR and mounting plate over the motor shaft.This will help protect fibers during installation. Maintain an even clearance around the shaft. Conductive MicroFibers™ must be in contact with conductive metal surface of the shaft. Mark your drill points and remove SGR and mounting plate.

4. *CAUTION: DO NOT DRILL INTO BEARING

   English Mounting Hardware:
   a. Drill (3) holes using a #29 drill
   b. Depth of hole should be 1/4” max.*
   c. Tap each hole with a #8-32 tap
   Metric Mounting Hardware:
   a. Drill (2) holes using a 3.3mm drill
   b. Depth of hole should be 6mm *
   c. Tap each hole with a M4 x 0.7 tap
5. Secure the SGR in place with screws, washers and spacers provided. Final location of SGR fibers should not be located over keyway. Proper operation and grounding of the SGR is reliant on the mounting screws to the motor housing. Alternate hardware used for mounting should be conductive. Consult EST with any questions.
6. After installation, test for conductive path to ground using Ohm meter. One probe on metal frame of SGR and one probe on motor frame. NOTE: Motor grounding must be in accordance with applicable wiring standards.
   CAUTION: SGR IS NOT A GROUND FAULT PROTECTION DEVICE.
7. In occasions where SGR is exposed to excessive debris, additional protection of the SGR fibers may be necessary. Call technical support at 207-998-5140 or email techsupport@est-aegis.com