A DC motor is an electric motor with a relatively simple design with high levels of reliability and high dynamics providing good efficiency. The commutation takes place mechanically by means of brushes made of graphite or precious metals. DC motors are found in a wide range of different applications – everything from fairly simple models used in toys, vacuum cleaners, electric toothbrushes and electric windscreen wipers to high-performance models for use as servo motors or compact drive units for applications in medical technology, optics, handling robots, electric hand tools or metrology and analysis equipment.
A DC motor is often combined with a gear unit to reduce the speed and increase the torque. For servo applications the motors are usually combined with some type of position feedback, usually pulse encoders.
In addition to having one of the best selections on the market for anyone looking for a DC motor, we also provide the option of creating a completely unique motion solution based on DC motors. This is regardless of whether this is a fairly simply motor or a more advanced servo motor.
It is not always obvious which type of motor is best suited to each application. The traditional DC motor has a coil which is wound round an iron core. This is a reliable, simple and cost-effective design that provides a relatively good service life. They are ideal where there are no particular space limitations and where no battery operation requires the motor to have as high an efficiency as possible and as low a weight as possible.
A motor with a self supporting rotor, (also referred to as an ironless, coreless or cage-wound motor), has a much lighter rotor which also generally has a lower overall weight, higher efficiency and higher power density. This type of motor is ideal when space is limited or when battery time and weight are critical factors.
A majority of all the products we supply are customised or specially developed for a specific application. With our extensive R&D facilities behind us, we are keen to be involved from the concept stage in order to adapt or develop the product and optimise it to meet your challenges. Read more about how we create value.
The original coreless DC motor was invented by Dr Fritz Faulhaber Sr. and was patented in 1958. All motors in this series, ranging from 6 mm to 38 mm in diameter, are based on the cage-wound, coreless and self-supporting windings, which form the heart of all FAULHABER’s DC motors. Combined with a gear unit and feedback (encoders or Hall-effect sensors) they are very potent servo motors for applications requiring maximum dynamics and high power in as light and compact a form as possible. The characteristics are a cogging free movement, high torque, low weight, low moment of inertia, dynamic operation and low torque ripple.
These flat DC motors are based on a unique self-supporting, coreless rotor winding providing all the advantages of a coreless DC motor but in an extremely thin format. The motors in this series, ranging from 15 mm to 26 mm in diameter, can also be combined with pulse encoders for precise position feedback in servo applications.
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