AEGIS™ 841
Bearing Isolator Shaft Grounding Ring

AEGIS™ 841 SGR

When "IEEE 841 Motors" are controlled by variable frequency drives (VFD) their bearings are vulnerable to pitting and fluting damage and premature bearing failure. This is why IEEE Standard 841-2001 requires (in Section 5.3) designing to prevent the VFD-induced “shaft-to-bearing voltages and/or currents resulting from common mode currents flowing through stray system capacitances to ground via the bearings.”

• AEGIS™ Colloidal
  Silver Shaft Coating
  
  Recommended prior to installing
  AEGIS™ Bearing Protection Ring
  
  Click on picture to learn more.

  Meets IEEE 841 bearing protection for VFD controlled motors
• Rated at IP56 against dust and water spray
• Designed for all severe duty applications
• For NEMA and above NEMA frame motors

The new AEGIS™ 841 SGR uses the proven shaft grounding ring technology that is protecting bearings in hundreds of thousands of VFD controlled motors world wide. The powerful combination of the AEGIS™ Bearing Protection Ring and IP56 rated Stainless Steel Bearing Isolator dramatically extends bearing and motor life and increases system reliability by diverting harmful shaft currents to ground. Unlike conventional grounding brushes, the AEGIS™ shaft grounding technology is maintenance-free and lasts for the service life of the motor. With a unique feature found only with the AEGIS™ 841 SGR the bearing isolator features a patented Anti-Clog™ slinger in it's rotor to prevent debris from plugging up the drain and compromising performance.