Gatterdam Industrial Services is your full-service industrial vendor. Selling and repairing motors since 1954, we offer cost-saving industrial solutions.

Call Us Today: (502) 776-3937

Bearing Protection Services

We offer the following services to help prevent electrical bearing damage:

  • Bearing Cutting and Inspection
  • Shaft voltage testing
  • External AEGIS® Installation
  • Internal AEGIS® Installation

Your Bearings Can Fail from VFD-Induced Shaft Currents

VFDs allow large energy savings and precise control.  But they also generate electric voltages on motor shafts.  These shaft voltages can discharge through the bearings, causing pitting, fluting, and eventual bearing failure.

Protect Your Bearings
with AEGIS®

AEGIS® Shaft Grounding Rings are the leading bearing protection technology.  They protect bearings by giving shaft voltages a "path of least resistance" to ground, so the shaft discharges through the ring, not the bearing.  Unlike other shaft grounding products, AEGIS® rings are long-lived and maintenance-free, and can be installed inside or outside of the motor.


Above: Shaft voltage on a motor before (L)
and after (R) AEGIS® installation.


Above: AEGIS internal installation


Download or Request a Free Copy of the
AEGIS® Bearing Protection Handbook