Minimotors and Micromotors

One field of special knowledge which the Business Unit Small Motor Technology commands is the development and production of small and micro-carbon brushes, i.e. finished-molded precision parts for small and miniature motors.
Micro-carbon brushes are used in minimotors with both wall-current and battery-current supply, for example:

• Small motors for electric razors
• Miniature motors for office equipment
• High-quality motors for use in toys
• Mini-motors for medical applications
• Audio and video devices

The aim of precision motors with very small dimensions is to ensure a relatively high output combined simultaneously with smooth and silent operation.

Physical material properties for mini- and micro-motors are primarily defined by means of

• Coefficient of friction
• Specific electrical resistance
• Rockwell hardness
• Bending strength
• Density
• Metal content
• Admissible peripheral speed
• Constant current density

and designed accordingly.

The secret to success in this case is to find the right balance of these properties.
Schunk can help you to do just that with its many years of experience as well as with comprehensive testing.

Gerhard Präzisionspresstechnik GmbH