Black Max

Marathon Black Max motors:


Inverter (Vector) Duty, totally enclosed TENV  three phase motors


0.25HP to 30HP

1000:1 Constant Torque


  • MAX GUARD® Class F insulation system
  • Constant Torque operation from 0 to base speed on Vector Drive
  • Constant Horsepower operation up to twice base RPM
  • Continuous duty at 40ºC ambient
  • Optimized for operation with IGBT inverter (NEMA Design A)
  • Normally closed thermostats (one per phase, Class F)
  • Removable rigid base, as noted
  • Ball Bearings
  • Field reversible to F2 (except as noted)
  • Encoder and brake provisions included on opposite drive end (maximum 10 lb-ft brake,see Modifications and/or Accessory Kits sections)
  • UL Recognized, CSA Certified, and CE Mark
  • Three year warranty



Designed for inverter or vector applications where up to a 1000:1 Constant Torque speed range is required. Typical uses include: material handling, machine tools,conveyors, crane and hoist, metal processing, test stands, pumps compressors, textile processing, and other industrial machinery installed in dusty or dirty environments.

Black Max