Marathon Black Max 1000:1 Vector Duty

Vector Duty and Constant Torque

Designed for variable frequency drive (VFD) vector control applications where up to a 1000:1 Constant Torque speed range is required.


  • Material Handling
  • Machine Tools
  • Conveyors
  • Crane and Hoist
  • Metal Processing
  • Test Stands
  • Pumps and Compressors
  • Textile Processing
  • Other Industrial Machinery in Dusty/Dirty Environments


  • MAX GUARD® Class F insulation system
  • Optimized for Operation with IGBT-Based Variable Frequency Drives (VFD)
  • Constant Torque Operation From 0 to Base Speed with VFD Vector Control
  • Constant Horsepower Operation Up to Twice Base Speed
  • NEMA Design A
  • Ball Bearings
  • UL Recognized, CSA Certified and CE Marked

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