Back to top

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, 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-proof and 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.

Limited availability outside North America
PMDC large


  • 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
  • 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

Get Started

Count on Kollmorgen support to help you design and build a successful machine and keep it reliably productive, anywhere in the world. Our co-engineering experts will work with you to tailor a perfect-fit solution for your motion requirements.

Talk to a motion expert
Title Language(s) Date Size
pdfPMDC Troubleshooting and Installation English 08 Nov 2012 1.39 MB Copy URL
Title Language(s) Date Size
Kollmorgen Automation and Motion Control English 14 Jun 2021 15.53 MB Copy URL
Permanent Magnet DC Motor Selection Guide English 03 Jan 2018 2.38 MB Copy URL
Title Language(s) Date Size
pdfPMDC Outline-Dimension Rev1 English 03 Nov 2011 41.15 KB Copy URL
Conflict Minerals Kollmorgen is committed to sourcing components and materials from companies that share our values regarding respect for human rights, integrity and environmental responsibility. Kollmorgen is also...


Title Language(s) Date Size
Blue Guide German 15 Jul 2015 Copy URL
pdfKollmorgen EU Declaration of Conformity PMDC English 19 Apr 2016 196.57 KB Copy URL