Shaft grounding technology

Electro Static Technology

Electro Static Technology provides solutions to the damage caused by currents resulting from unwanted shaft voltages.

AEGIS® Shaft Grounding Rings (SGR) prevent premature bearing failure caused by capacitive shaft voltages created by Variable Frequency Drives (VFDs) on the shafts of AC and DC machines. They prevent electrical bearing fluting damage by safely diverting harmful shaft voltages and bearing currents to ground. Using proprietary Electron Transport Technology™, the conductive microfibers™ inside the AEGIS® SGR provides the most reliable current diversion technology for shaft grounding with a “path of least resistance” to dramatically extend motor life.

The design of AEGIS® SGR provides reliable shaft grounding for power turbines and generators, large AC motors, large DC motors, traction motors, all sizes of VFD motors and wind turbine generators. They divert harmful shaft voltages to ground and extend bearing life.

Install AEGIS® SGR on the DE and insulate the bearing on the opposite end (NDE) for best results. Large motors and generators often have much higher induced shaft voltages and bearing currents. The six circumferential rows of conductive microfibre provide the extra protection for these high current applications.

Key Benefits

  • Good for L10 life of bearings
  • Easy bracket installation
  • Maintenance free
  • Nothing to wear out
  • Contamination proof
  • Effective at any RPM
  • For any size motor shaft
  • No adjustment needed

Specifications

  • Good for L10 life of bearings
  • Easy bracket installation
  • Maintenance free
  • Nothing to wear out
  • Contamination proof
  • Effective at any RPM
  • For any size motor shaft
  • No adjustment needed

Applications:

  • Motors up to 75 Kw low voltage
  • Motors greater than 75 Kw
  • Motors where both bearings are insulated
  • Motors with cylindrical roller, Babbitt or sleeve bearings
  • Vertical solid shaft and hollow shaft motors
  • DC motors