Motor Engineering

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NMB offers a broad range of standard and custom designed motors for all markets. Most of the components used in our motors are produced in house. Some of these components are: machined parts, such as ball bearings, shafts and gears, pressed parts such as frames and rotors, plastic-injection molded parts, diecast parts and magnets. The ability to produce in-house components gives NMB an unmatched advance in terms of quality and quality control, supply capabilities, lead time and manufacturing costs.

As part of the Minebea Group Company, NMB counts on worldwide manufacturing facilities and R&D bases in Japan and Germany. Here in the United States, as well as in Europe, NMB has local engineers that stand ready to help you with your motor questions, challenges and applications.

If you are interested in talking to one of our application engineers, please contact us at:



NMB engineers design and build a variety of quality motors for a wide range of applications. To know exactly which types of motors are ideal for your particular needs may require some research. Much of the information you need can be found here. In the pages linked to below, you can learn basic motor engineering principles behind NMB motor products, including information on the following topics.

Step Motor Engineering

Learn the general specifications of step motors and how the step design effectively turns electricity into rotating mechanical energy. Understand the principles behind the step motor controller, step motor driver, and winding configurations. Learn how to decide whether a hybrid motor or permanent magnet motor is better for your needs.

PM Step Motor Engineering

Discover how these step motors use permanent magnets to facilitate the rotating action of the motor, how permanent motors are constructed, and what your different permanent magnet step motor options are. Find out how to select your permanent magnet step motor based on size or output torque. Be aware that even though NMB probably has the perfect PM step motor for your application, it may require some trial and error to determine exactly which PM step motor it is that you need. Learn how NMB can provide a variety of sample motors to help with your process of motor evaluation and choice.

Brush DC Motor Engineering

Find out what brush motors are and how they work. Brush DC motors are relatively inexpensive and tend to be very effective for a number of motor applications. See the different shapes and sizes of brush DC motors and learn how to establish which brush motors will work best for your particular applications. Understand the different criteria you can use for selecting your brush DC motor.

Brushless DC Motor Engineering

Learn why brushless DC motors are one of the most popular choices for small motors today. Find out how the brushless DC motor uses electromagnetism rather than a physical commutator to drive the rotating action of the motor, and how this can lead to a more efficient, longer-lived motor. Get an understanding of the construction theory and basic designs of the brushless DC, or BLDC, motor and the many advantages of using this particular type of motor for your motor applications.

Step Motor Engineering

  1. General Specification
  2. Basic Introduction of Step Motors
  3. Construction and Operating Theory
  4. Full, Half & Microstepping
  5. Vibration and Resonance
  6. Drivers and Winding Configuration
  7. Winding Diagram and Switching Sequence
  8. Torque and Speed Relationship
  9. Conversion Factors
  10. Glossary

Brush DC Motor Engineering

  1. Brush DC Motors Outline
  2. Selection of Brush DC Motors
    1. Selecting by Shape – Rectangular
    2. Selecting by Shape – Round
    3. Selecting by Spindle
    4. Selecting by Feeding, Loading
    5. Selecting by Rated Load / Rotation Speed

PM Step Motor Engineering

  1. Outline
  2. Permanent Magnet Motor Construction
  3. Permanent Magnet Step Motors Custom Features & Options
  4. Selection of PM Motors
    1. Torque Requirements
    2. Resistance Value
    3. Temperature
    4. Magnet
    5. Coil Extension Method
    6. Gear, Pulley etc.
    7. Standard Parts.
    8. Standard Dimensions
    9. Drive Circuitry

Brushless DC Motors Engineering

  1. Brushless DC Motors Introduction