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Shaft Grounded Pump Motors

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. The Baldor-Reliance close-coupled pump with internal AEGIS® bearing protection ring is the ultimate pump motor that can be paired with a VFD. The shaft grounding ring is installed internally in a protected environment shielded from contaminants that could affect its performance.


  • 1 – 50hp 
  • Available in ODP or TEFC construction
  • Internal grounding brush for bearing current mitigation on DE retainer ring 
  • Class H insulation for increased protection on Inverter use 
  • Oversize ball bearings for the pump industry 
  • Locked DE bearing to allow mounting in any configuration 
  • Designed for longevity with a 3 year warranty on premium efficient Super-E® motors 
  • Suitable for Inverter use per NEMA MG1 Part

Common applications

  • Commercial pumps
  • Pumps paired with a VFD 
  • General purpose pumps 
  • Industrial pumps

Common industries

  • Food and beverage 
  • Agricultural
  • Aggregate
  • Pulp & paper

Key documents and links