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Permanent magnet DC (PMDC)




Permanent magnet DC (PMDC)

Kollmorgen’s permanent magnet DC motors offer rugged, quality construction and dependable operation. The PMDC motor design is based on the use of permanent magnets in place of a wound field design thus enabling a lighter, more compact and efficient motor with a wider speed range and an exceptionally linear speed/torque curve. Standard construction includes Class H armature insulation, patented anti-cogging magnets for smooth low speed operation, rugged commutator design, and long life, constant force brush rings. Kollmorgen distinguishes itself from the many options available to include explosion-proofand washdown models, as well as cost-effective co-engineered modifications tailored specifically to customer demands. Kollmorgen design engineering is well accomplished at integrating custom modifications to PMDC motors that allow our customers to differentiate their machines in the application.



  • SR and SRF Series: 
    • SCR-rated, NEMA standards
    • 1/8 to 1 HP, 90 volt, 1750 rpm
    • 1/4 to 3 HP, 180 volt, 1750 rpm
  • STF Series: 
    • washdown duty, SCR-rated, NEMA standards
    • 1/4 to 1 HP, 90 volt, 1750 rpm
    • 1/2 to 2 HP, 180 volt, 1750 rpm
  • EP Series: 
    • explosionproof, SCR-rated, NEMA standards
    • 1/4 to 3/4 HP, 90 volt, 1750 rpm
    • 1/4 to 3/4 HP, 180 volt, 1750 rpm
    • 1/3 HP, 12 volt, 1750 rpm
    • 1/3 to 3/4 HP, 24 volt, 1750 rpm
  • BA Series: 
    • low voltage, NEMA standards
    • 1/4 to 1/2 HP, 12 volt, 1750 rpm
    • 1/4 to 1 HP, 24 volt, 1750 rpm
  • Patented anti-cog magnets for smooth low speed operation
  • Polyester-impregnated armature for electrical and mechanical integrity
  • High overcurrent capacity and dynamic braking
  • Rugged, fused commutator
  • TEFC and TENV configurations
  • Long life, constant force brush springs with field-replaceable brushes
  • Gasketed conduit box with large wiring compartment
  • NEMA or metric mounting
  • Large sealed bearings, standard
  • Class H insulation
  • Tachometer adapter kits available






Please Contact

Servo Dynamics (THAILAND) Co.,Ltd.

Phone : +66 2 7535625  Fax : +66 2 7535650

E-mail :




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