What does the reduction ratio of a geared motor mean?

The reduction ratio of a geared motor is the ratio of the rotational speed between the reduction device (e.g., planetary gear, worm gear, cylindrical gear, etc.) and the rotor on the output shaft of the motor (usually the rotor on the motor). The reduction ratio can be calculated using the following formula:
Deceleration Ratio = Output Shaft Speed / Input Shaft Speed
Where the output shaft speed is the output shaft speed after it has been reduced by the speed reduction device, and the input shaft speed is the speed of the motor itself.

The reduction ratio is used to describe the change in speed of a reduction device with respect to the output of a motor. Since the motor will generally output at a higher speed, in some applications a lower speed is required to meet the demand. This is where the geared motor comes into play, by reducing the speed of the output shaft by means of a reduction device to provide the appropriate speed.

The selection of the reduction ratio needs to be based on the requirements of the actual application on the one hand, and the design and manufacturing cost of the geared motor on the other. Normally, the reduction ratio of a geared motor can be determined according to the ratio of the required speed and torque. If the output of high torque and low speed is required, the reduction ratio needs to be larger; while if the output of high speed and low torque is required, the reduction ratio can be relatively small.

The choice of reduction ratio should also consider the impact on the overall performance of the geared motor. The larger the reduction ratio, the overall size and weight will usually increase, and may also have a certain impact on the efficiency of the geared motor. Therefore, power requirements, size constraints, weight requirements, and efficiency need to be considered when selecting a gear ratio.

The reduction ratio of a gearmotor is generally determined by the ratio of the number of teeth of the gears or worm gears inside the reduction unit. For example, if the gears on the output shaft of the reduction gear unit are 10 times more numerous than the gears on the input shaft, then the reduction ratio is 10. Typically, the reduction ratio is a fixed value, but in some special cases some geared motors can be adjusted to provide different reduction ratios as required.

The choice of reduction ratio is of great importance for the application field of geared motors. Geared motors are widely used in various machinery and equipment, such as machine tools, conveyors, printing presses, wind turbines, and so on. Different applications require different reduction ratios. Some applications require larger reduction ratios to provide more torque, while others require smaller reduction ratios to provide higher speeds.

In addition to the reduction ratio, geared motors have some other important performance parameters, such as rated speed, rated power, rated torque and so on. These parameters also need to be considered comprehensively when selecting a geared motor. Only by fully understanding and reasonably selecting the reduction ratio and other performance parameters can we ensure that the geared motor can work properly under specific application conditions and meet the user’s needs.

In short, the reduction ratio of the geared motor refers to the ratio of the rotational speed between the reduction device and the rotor on the output shaft of the motor. The selection of the reduction ratio needs to be based on the application requirements, as well as the impact on the overall performance of the geared motor for comprehensive consideration. The reduction ratio of a geared motor is one of the most important parameters affecting its output speed and torque, which is of great significance for the operation and performance of various mechanical equipment.