Super-E motors with Aegis® bearing protection rings

The need for proper motor grounding is extremely important in preventing premature bearing failure which could result in high maintenance costs or worse - facility downtime. While there are several techniques and practices to ground the motor, most common and economical is a shaft grounding device mounted to the frame of the motor.


  • 1 – 100 hp
  • 143T – 326T NEMA frame
  • Three-phase (foot mounted and C-Face)
  • 208-230/460, 230/460 and 575 volt
  • Available in TEFC (IP44) or ODP (IP22) construction 
  • AEGIS® bearing protection ring installed internally
  • AEGIS® SGR guarantees the prevention of bearing damaged caused by drive-induced currents
  • Class H insulation for increased protection on inverter-use – meets NEMA MG1 Part
  • 1.15 service factor with Class B temperature rise at rated horsepower (sine wave)
  • Regreasable ball-bearings with Mobil Polyrex® EM grease
  • Meet or exceed NEMA Premium® efficiencies for LEED and FEMP buildings
  • Heavy duty frames with cast endplates, suitable for any mounting position
  • Designed for longevity with 3 year warranty

Common applications

  • HVAC air handling units
  • Fan array
  • Exhaust air systems
  • CRAC (computer room air conditioning)
  • Cooling towers
  • Condensers
  • Pumps
  • Compressors
  • Other variable speed applications

Common industries

  • Commercial buildings
  • Schools and Universities
  • Hospitality
  • Healthcare
  • Public meeting arenas
  • Data Centers
  • Water treatment

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