How To Choose The Model Of DC Miniature Reduction Motor?

Many non-professional demanders, usually in the motor selection will require: the smaller the size, the better, the greater the torque, the better, the smaller the noise, the better, the cheaper the better. In fact, this selection not only increases the cost of products, but also can not choose the right model. According to the experience of the old engineers in the industry, the selection is recommended from the following aspects:

Mechanical size

A.The maximum acceptable installation space, such as diameter, length, etc.

B.the size of the screw installation position, such as the size of the screw, effective depth, spacing, etc.

C. Consider the required transmission ratio. Transmission ratio = reduction motor output shaft speed / drive shaft speed. According to the specific needs, you can choose a different transmission ratio. In general, the larger the transmission ratio, the greater the output torque. However, the high transmission ratio leads to the low output speed, which affects the working efficiency of the mechanical equipment.

D. Consider the working environment. Often used in a relatively harsh environment, such as high temperature, humidity and other environment. In order to ensure that it operates normally and has a long life, the choice of mechanical size must fully consider these factors.

Selection of the electrical performance

A.Determine the rated force moment and rotation speed. If you do not know what you need, you can buy a ready-made return test in the market after estimation, and send it to the supplier for the test confirmation. At this time, you only need to give the power voltage and working current.

B.Load characteristics: Load characteristics are an important parameter to evaluate the performance of micro-reduction motor. This parameter describes the performance of speed, torque and efficiency under different loads, and is often used as a key indicator of selection.

C.Operating efficiency: Operational efficiency is an index to measure the utilization efficiency of electric energy. Generally speaking, a miniature reduction motors with high efficiency can provide greater output power, reduce energy consumption and save energy.

D.Rated voltage: The rated voltage is a common parameter that needs to be determined in the design. It describes the power supply voltage range that can work stably, ensuring the stability and long life in the working process.

E. rated current: the rated current is the size of the maximum continuous working current. Generally speaking, the rated current that meets the operation requirements should be selected to avoid the occurrence of overcurrent or circuit short circuit phenomenon during work.

F. in the selection of electrical performance, try to choose low speed and small reduction ratio, so that you can obtain a high strength and long life of the product.

Due to the different product uses, selection as a knowledge, it is very difficult to achieve professional level in a short time. In this case, it is best to entrust professional engineers to help selection, which can achieve the effect of twice the result with half the effort. At present, it is relatively widely used, so take it as a brief explanation: The DC voltage used by micro motors is generally below 36V. According to the demand of each battery and application in the market, 5V, 12V and 24V are relatively more. This kind of reduction motor, with more brush motor, brushless motor, stepping motor and servo motor. Generally single motor speed of tens of thousands of revolutions, small motor do high speed small torque, large motor do low speed (can do hundreds of revolutions) large torque. But some uses only need a few dozens of turns, so you need a reduction gearbox. It can be understood that the reduction gearbox is used to reduce the speed and increase the torque. The box series is different, the efficiency will be different. Generally, the efficiency of positive gear box is 0.9, and the fifth reduction efficiency is 0.9X0.9X0.9X0.9X0.9=0.59049; the efficiency of planetary gearbox is 0.8, and the fourth reduction efficiency is 0.8X0.8X0.8X0.8=0.4096。

The above is our VSD motor sharing with you about how to choose the model of DC micro reduction motor . For more information, please contact our professional customer service personnel to answer. Thank you for clicking and watching.