What does a hollow cup motor consist of?

The hollow cup motor is mainly composed of back cover, terminal, brush end cover, brush, commutator, cup winding (rotor), shaft, gasket, sliding bearing, shell, magnet (stator), flange and positioning ring . The stator consists of permanent magnets, a housing and a flange. The housing provides a permanent magnetic field so that the motor has no metal losses. The torque produced is uniform and runs smoothly even at low speeds. At high revs, the engine reduces vibration and noise. The windings are connected to the shaft by means of commutation plates. The wires run through the air gap between the magnet and the housing, and the delivery system uses stainless steel brushes to reduce brush sparking.

Hollow cup motors are DC permanent magnet servo motors and drive motors that can be classified as micro motors. Structurally, it breaks the rotor structure of the traditional motor and adopts a non-metallic rotor, also known as a hollow cup rotor. This new rotor structure completely eliminates the power loss caused by the eddy currents generated by the iron core. Because there is no metal loss, the efficiency is higher than that of ordinary DC micromotors. Its coil is the rotor, which is less unstable and easy to control. But without a metal iron core, the rotor coil can only be made very thin, otherwise it will cause the loss of magnetic flux, so the power of the hollow cup motor is not large, and the large hollow cup motor can only reach a few hundred watts.

I hope the above brief introduction can help you better understand what a hollow cup motor is, and how it differs from other micromotors. For more micromotor knowledge, please continue to learn about Vshida Micro motors.