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Why are planetary gear reducers paired with servo motors?

Update:22-07-2024
Summary:...

1. Improve torque output
Although servo motors have the characteristics of high-speed response and high-precision control, their original torque may not be enough to meet the needs of certain applications. Planetary gear reducers can effectively reduce the speed of the motor through its internal gear transmission mechanism, thereby increasing the output torque. This increase in torque is proportional to the increase in control current, but compared with directly increasing the output torque of the servo motor, using a planetary gear reducer is more economical and efficient.

2. Improve system efficiency and precision
Planetary gear reducers can convert the high-speed rotation of the servo motor into low-speed high-torque output, allowing the motor to output greater torque at low speed, thereby improving the efficiency of the entire system. At the same time, the high-precision transmission characteristics of the planetary gear reducer can ensure that the system's movement is more stable and precise, meeting the high-precision requirements of applications such as precision automation equipment, CNC machine tools, and industrial intelligent robots.

3. Matching high-speed servo motors
Servo motors usually have a high speed, generally between 3000-6000 rpm, while ordinary gear reducers usually have a low input speed (≤1500rpm). Planetary gear reducers have a high input speed tolerance, and the current motor input speed can reach 8000 rpm, so they can better match high-speed servo motors. This matching relationship helps to reduce problems such as bearing seal wear, leakage and overheating caused by high-speed rotation.

4. Achieve more flexible control
Servo motors are usually equipped with communication protocols and encoders to achieve precise position control and speed control. When combined with planetary gear reducers, the control function of the system can be further expanded to achieve more complex motion control strategies. At the same time, the reduction ratio, transmission efficiency and load-bearing capacity of the planetary gear reducer can be optimized according to actual needs to meet the needs of different applications.