DC electric motors with potentiometer offer power, control for incubator rotating mechanism

Bosch “VMC” DC electric motor with potentiometer features space-saving compact design, weighs approximately 0.12 kg, allows for easy installation into cabinet-style egg incubators, other industrial systems, and equipment.


Hens layBosch VMC Motor the eggs, but each year in the U.S. poultry industry, billions of baby chicks are hatched from those eggs by means of electric-powered egg incubators. To power the incubator’s rotating mechanism, which is essential to the development of healthy hatchlings, the Bosch i-Business Group offers the Bosch “VMC” dc electric motor with potentiometer. This 24-volt, 0.22-watt adjustment motor, which also offers design advantages for many different kinds of industrial applications, is one of several different 12V – 24 V dc electric motors with gear boxes that are featured in the Bosch VMC motor family.

The Bosch “VMC” dc electric motor with potentiometer features a space-saving compact design and weighs approximately 0.12 kg, allowing for easy installation into cabinet-style egg incubators and other industrial systems and equipment. The potentiometer, which is included with this model of Bosch VMC motor, is vital for incubator applications because it triggers the on/off electrical circuit for the incubator’s timed rotating mechanism.

Hatching eggs (fertile eggs) are rotated in large incubators to mimic the manner by which chickens and other fowl naturally, and frequently, turn over their “laid” eggs during that period when they sit on them (thereby incubating the eggs) and wait for their chicks to hatch. Hatching eggs must be rotated a few times throughout the day to ensure that the embryos do not stick to the interior walls of the eggs; otherwise the embryos will fail to develop.

Kenn Langosch, Sales Manager for Industrial Motors for Bosch, says, “Having dependable incubators is extremely important to the overall success of the poultry industry. The Bosch i-Business team can help the developers of incubators and other types of farm equipment ensure the reliability of their products by matching Bosch dc electric motors to their critical product design needs.”

The key design characteristics of the Bosch VMC motor with potentiometer include:

  • Nominal voltage: 24 V
  • Nominal power: 0.22 W
  • Nominal current: ≤ 55 mA
  • Maximum current: 250 mA
  • Nominal speed: 6 min-1
  • Rated torque: 40 Ncm
  • Breakaway torque: ≥ 100 Ncm
  • Reduction: 405 : 1
  • Direction of rotation: L/R (direction of rotation can be inverted by changing over +/-)
  • Shaft load max. axial: ≤ 30 N
  • Shaft load max. radial: ≤ 50 N

Bosch Industrial Motors



- Edited by Gust Gianos, Control Engineering, www.controleng.com

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