Merkle-Korff Brushless DC Gearmotors

Merkle-Korff offers Brushless DC gearmotors with either hall only feedback or a fully integrated control board, internal to the motor. The integral control is a fully digital control with the latest in micro-processor technology on board. The motor can be mounted not only to their most robust parallel shaft gear box that they manufacture (MK’s GF gearbox) but it can also be fitted to their new line of 52 mm planetary gear heads.

Our domestically based engineering team has the expertise to customize the software to meet the various demands and requirements of virtually any application. Our brushless DC gearmotors are currently being utilized in virtually every market we serve, including the commercial food equipment, pellet stove, satellite dish and pump markets. For those applications that require a higher degree of controllability or a higher efficiency solution to meet your green initiatives, the Merkle-Korff Brushless DC product is the perfect solution.


Internal Controller

  • Two quadrant programmable control: current limiting, acceleration, speed regulation, velocity profiles
  • Built-in quadrature encoder
  • Over-current protection
  • Stall condition protection
  • 0 – 5 or 0 – 10 VDC speed reference voltage
  • Dynamic braking and holding capability
  • Input voltage polarity protection
  • Electronic commutation


  • Long life
  • Ball bearing construction
  • 8 pole rotor
  • 3 phase stage – wye connection
  • High energy/skewed magnets for reduced cogging
  • Integral hall sensors for rotor position


  • Sintered or needle bearings: output shaft
  • Sintered powder metal gearing
  • Helical first stage for low audible noise

Optional Features

  • Hall only output: externally controlled
  • Incremental optical encoder


  • Commercial food equipment
  • Pumps
  • Business equipment/automation
  • Pellet stove
  • Medical/laboratory
  • Satellite positioning systems
  • Custom solutions

More info:

We are honored to serve as a manufacturer’s rep for Merkle-Korff Industries, an industry leader in brushless, PMDC and AC gearmotor and motor and control solutions for applications in commercial food equipment, consumer appliance, vending, pellet stove, pump, medical and other markets. A pioneer in the development of small motors and gear motors known as “sub-fractionals,” the Merkle-Korff brand has contributed to the success of countless commercial, industrial and consumer products since its founding in 1911.

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