1. Speed ​​ratio: The speed ratio of the precision planetary reducer is roughly the number obtained by dividing the rated speed of the motor by the final output speed.

　　For example, if the final output speed is 200RPM and the rated speed of the motor is 3000RPM, then the speed ratio of the precision planetary reducer should be about 1:15.

　　Of course, the final output speed should still depend on the working conditions.

　　2. Look at the torque: the rated torque of the precision planetary reducer must be greater than or equal to the motor rated torque multiplied by the reduction ratio.

　　Assuming that the rated torque of the servo motor is 10N.M and the reduction ratio is 15, then the rated torque of the selected Bapman planetary reducer model should be greater than 10*15=150N.M.

　　3. Accuracy: The return clearance of the precision planetary reducer depends on the specific work requirements. Generally speaking, the clearance used with the servo motor should not be greater than 20arcmin. The single-stage deceleration that can achieve less than or equal to 3arcmin is generally a high-end product.