In addition to the gear reducer shaft broken due to poor concentricity of the gear reducer output end assembly, if the gear reducer output shaft is broken, the following reasons may be involved.
First of all, the wrong type selection results in insufficient output of the equipped reducer. Some users mistakenly believe that the rated output torque of the selected reducer can only meet the working requirements when selecting the model. In fact, first, the rated output torque of the equipped motor multiplied by the reduction ratio should be less than the rated output torque of similar reducers provided by the product sample in principle. Second, the overload capacity of the drive motor and the maximum working torque required in practice should also be considered.
Theoretically, the maximum working torque required by the user must be less than twice the rated output torque of the reducer. Especially in some applications, this rule must be strictly observed, which is not only to protect the internal gear of the reducer, but also to prevent the output shaft of the reducer from being twisted. This is mainly because, if the equipment is installed incorrectly, the output shaft of the reducer and its load are stuck. At this time, the overload capacity of the drive motor will still make it continuously increase its output, and further, the force borne by the output shaft of the reducer may exceed 2 times of its rated output torque and the output shaft of the reducer may be twisted.
Secondly, in the process of acceleration and deceleration, if the instantaneous torque that the output shaft of the reducer takes exceeds 2 times of its rated output torque, and the acceleration and deceleration are too frequent, the reducer shaft will eventually be broken.