A motor reducer is a mechanical transmission device that connects an electric motor to a driven load.

A motor reducer is a mechanical transmission device that connects an electric motor to a driven load.

It allows you to adjust the torque and speed between the motor and the load. The reduction gear assembly consists of a series of gears.

A reducer is used to adjust the characteristics—torque and rotational speed—of the mechanism’s input and output shafts. Therefore, it is essential to know both the torque and the rotational speed.

Therefore, it is appropriate to begin by asking yourself about torque. A gearbox increases the motor’s torque, enabling the driven component to rotate under the influence of this increased torque. Gearbox manufacturers sometimes specify the minimum and maximum torque each model can handle, expressed in newton-meters (Nm). Torque density varies significantly among different types of gearboxes; for instance, planetary gearboxes offer particularly high torque density.

Another application of gear reducers is to lower motor speed; we recommend selecting an ideal reduction ratio that suits your specific needs. Based on the motor’s rotational speed, the reduction ratio determines the output speed. Manufacturers typically specify this information on their product pages, expressed in revolutions per minute (RPM).

You should ask yourself which type of gear reducer is best suited to your application. The input and output shafts of a gear reducer can be coaxial, parallel, or orthogonal—depending on your intended use.