Structurally speaking, both brushless and brushless DC gearmotors have rotors and stators. Today, we will not introduce the differences between these two types of motors. There are many related introductions online, and today's content mainly focuses on why the rotor of the gearbox needs to be magnetized?

To make the reducer turn up, first of all, the control part needs to sense the current position of the motor rotor, and then decide to open the order of the power transistor in the converter according to the stator winding, so that the current flows through the motor coil in order to produce a forward rotating magnetic field, and interact with the magnet of the rotor, so that the motor can be rotated smoothly/reversely. The performance of DC gear motor is related to the number of permanent magnets, magnetic flux strength, input voltage size factors, and the control performance also has a very large relationship.

Rotor magnet - sintered ferrite material

For example, the brushless DC gear motor depends on changing the alternating frequency and waveform of the current wave input to the stator coil, and a magnetic field rotating around the geometric axis of the DC gear motor will be formed around the winding coil. The magnetic field drives the permanent magnet on the rotor to rotate, and the DC motor will begin to rotate. The performance of the DC gear motor is related to the number of permanent magnets and the magnetic flux strength.

The addition of magnets on the rotor of the reducer is mainly to use the principle of electromagnetic induction to achieve specific functions, such as electromagnetic transmission, electromagnetic braking or electromagnetic clutch. Through the on-off control of the current in the stator coil, the rotor movement, braking or connection can be controlled.

Guess you are concerned about: What material is the reducer magnet material?

The common magnet types of micro gear motor are ferrite magnets and Ndfeb rare earth magnets.

The above is about why the reducer rotor to add magnets and magnet material related introduction, if you need to purchase motor related magnets can contact our company to provide you with samples, evaluate the price.

Relevant motor rotor magnet sample recommendation;

Multipole Ferrite Ring Magnets

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Multipole Neodymium Magnets

Injection molded ferrite magnets