DC geared motors usually have higher speeds and lower torques, and are suitable for occasions that require less torque.

DC DC geared motors, that is geared DC geared motors, are based on the usual DC geared motors, plus matching gear reduction boxes. The role of the gear reduction box is to provide lower speed and larger torque. Together, gearboxes with different reduction ratios can supply different speeds and torques. This has greatly increased the use of DC geared motors in the automation profession.

1. Divided by the type of operating power: It can be divided into DC geared motor and communication motor.

1.1 DC motor can be distinguished according to the layout and operating principle: brushless DC motor and brushed DC motor.

1.1.1 Brushed DC motors can be distinguished: permanent magnet DC motors and electromagnetic DC motors.

1.1.1.1 Classification of electromagnetic DC motors: series-excited DC motors, parallel-excited DC motors, separately-excited DC motors, and compound-excited DC motors.

1.1.1.2 Classification of permanent magnet DC motors: rare earth permanent magnet DC gear motors, ferrite permanent magnet DC motors, and aluminum-nickel-cobalt permanent magnet DC motors.

1.2 The communication motors can be divided into: single-phase motors and three-phase motors.

2. Distinguish according to layout and operation principle: it can be divided into DC motor, asynchronous motor and synchronous motor.

2.1 Synchronous motors can be distinguished: permanent magnet synchronous motors, reluctance synchronous motors and hysteresis synchronous motors.

2.2 Asynchronous motors can be distinguished: induction motors and commutator motors.

2.2.1 Induction motors can be distinguished: three-phase asynchronous motors, single-phase asynchronous motors, and shaded-pole asynchronous motors.

2.2.2 Communication commutator motors can be distinguished: single-phase series-excited motors, AC-DC motors, and repulsion motors.

3. Differentiated according to starting and working methods: capacitor-started single-phase asynchronous motor, capacitor-operated single-phase asynchronous motor, capacitor-started single-phase asynchronous motor and split-phase single-phase asynchronous motor.

4. Distinguish according to use: driving motor and control motor.

4.1 Classification of driving motors: electric motors (including drilling, polishing, polishing, grooving, cutting, reaming, etc.) motors, household appliances (including washing machines, fans, refrigerators, air conditioners, recorders, video recorders, Motors for DVD players, vacuum cleaners, cameras, hair dryers, electric shavers, etc. and other general small machinery (including various small machine tools, small machines, medical equipment, electronic equipment, etc.).

4.2 Control motors are distinguished: stepper motors and servo motors.

5. Distinguish according to the layout of the rotor: cage induction motor (old specification is called squirrel-cage asynchronous motor) and wire wound rotor induction motor (old specification is called wire wound asynchronous motor).

6. Divided by working speed: high speed motor, low speed motor, constant speed motor, speed regulating motor. Low-speed motors are divided into gear DC reduction motors, electromagnetic reduction motors, torque motors, and claw pole synchronous motors.

In addition to stepped constant speed motors, stepless constant speed motors, stepped variable speed motors and stepless variable speed motors, speed control motors can also be divided into electromagnetic speed control motors, DC speed control motors, PWM frequency conversion speed control motors and Switched reluctance speed motor.

The rotor speed of an asynchronous motor is always slightly lower than the synchronous speed of a rotating magnetic field.

The rotor speed of a synchronous motor has nothing to do with the size of the load and is always maintained at the synchronous speed.