Causes of Broken Output Shaft of Planetary Reducer

- Feb 22, 2021-

Planetary reducers are widely used due to their small size, high transmission efficiency, wide deceleration range, high precision and many other advantages. So, what caused the output shaft to break during the use of the planetary reducer?

 

Except for poor concentricity cause broken shaft of the reducer, it can be caused by the following reasons:

planetary reducer series


First of all, the wrong model selection caused insufficient output of the planetary reducer. Some users mistakenly believe that as long as the rated output torque of the selected planetary reducer meets the working requirements, it is enough. In fact, it is not. Firstly, the rated output torque of the equipped motor is multiplied by the reduction ratio, and the value obtained is in principle less than the rated output torque of the planetary reducer. secondly, user need to consider the overload capacity of the drive motor and the maximum operating torque required in practice. Theoretically, the maximum operating torque required by the user must be less than twice the rated output torque of the planetary reducer especially some particular applications. This is not only protection for the planetary reducer, but more importantly, to prevent the output shaft of the planetary reducer from being twisted. This is mainly because if there is problem with the installation of the equipment, the output shaft of the planetary reducer and its load are jammed. At this time, the overload capacity of the drive motor will still increase its output, which may cause the output bearing of the planetary reducer endure the force is more than twice the rated output torque and the output shaft can be twisted.

 

Second, in the process of acceleration and deceleration, if the momentary torque applied to the output shaft of the planetary reducer exceeds twice its rated output torque, and this acceleration and deceleration are too frequent, the axis will eventually be broken too