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PMDC Parallel Shaft Gearmotors
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DC Specification Form (pdf)

The Merkle-Korff line of PMDC Gearmotors offer customers maximum application flexibility in gearmotors designed to exacting specifications. All models offer custom windings, gear-ratios and a wide variety of accessories to meet specific performance requirements.


  • Customized output shafts
  • Double output shaft extension
  • Various lead lengths, termination and custom harnesses
  • Needle bearings for high radial loads
  • Various mounting options including case mounting
  • Replaceable brushes on the 2500 series
  • Class B (130°C) or Class F (155°C) armature
  • Ball bearings in the motor for longer life
  • EMI filtering for electronic motor controls
  • Encoders/tachometers


Type Zinc die cast and plastic DC gearmotor
Output speeds 1-500 rpm*
Voltage Windings up to 48 Vdc; 12 and 24 Vdc standard
Bearings Self-aligning sintered bronze with large oil reservoir
Terminations Spade terminals or leads
Duty cycle Intermittent or continuous
Motors available 2500 series, 300 series, 5000 series, 600 series
Rotation Reversible

*Note: Speed and torque combinations will vary depending on the motor/gearbox combination.


  • Food processing and restaurant equipment
  • Vending
  • Medical equipment
  • Security systems
  • Instrumentation
  • Production machinery and equipment
  • Valve actuators
  • Industrial controls
  • Switch gear




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