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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.

Get a Quote Selection Guide

Limited availability outside North America


  • 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

Media & Downloads

Title File Language Date Share URL
PMDC Troubleshooting and Installation English
Share URL /sites/default/files/public_downloads/PMDC-Troubleshooting-and-Installation.pdf
Title Language Date Share URL
Kollmorgen Catalogo Automazione e Motion Control IT Italian Share URLview
Kollmorgen Full-line Catalog English Share URLview
Kollmorgen otomasyon ve hareket kontrol çözümleri kataloğu TR Turkish Share URLview
Permanent Magnet DC Motor Selection Guide English Share URLview
科尔摩根运动控制及伺服系统解决方案 Chinese, Simplified Share URLview
Title File Language Date Share URL
China Compulsory Product Certification (CCC Technical Notice) English
Share URL /sites/default/files/2024-01/CCC%20Technical%20Notice%20on%20Scope%20of%20Kollmorgen%20Products.pdf
Kollmorgen EU Declaration of Conformity PMDC English
Share URL /sites/default/files/public_downloads/Kollmorgen-EU-Declaration-of-Conformity-PMDC.pdf
PMDC EX Certification Letter English
Share URL /sites/default/files/2023-10/PMDC%20EX%20Certification%20Letter.pdf
PMDC Hazardous Location Motors UL & CSA Certification English
Share URL /sites/default/files/public_downloads/PMDC%20EX%20Certification%20Letter%2018JAN23.pdf

These 3D models are intended to guide your design activities and may be used as reference information. Be sure to consult a Kollmorgen expert to ensure you have the most current and accurate information for critical aspects of design work.

Title File Language Date Share URL
PMDC Outline-Dimension English
Share URL /sites/default/files/public_downloads/PMDC_Outline-Dimension_Rev1.pdf

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