When the drive motor of the planetary reducer is not concentric with the planetary reducer, the output shaft of the drive motor also bears the radial force (bending moment) from the input end of the planetary reducer. This radial force will force the output shaft of the drive motor to bend, and the bending direction will change with the rotation of the output shaft. If the concentricity error is large, the radial force will increase the local temperature of the motor output shaft, and its metal structure will be continuously damaged, which will eventually lead to the fracture of the drive motor output shaft due to local fatigue.

2、 The output shaft of the planetary reducer is broken due to the non concentric assembly of the planetary reducer:

It is possible that the problem of its concentricity is that the planetary reducer manufacturer has problems in assembly, and there is deviation in concentricity. When the planetary reducer encounters great external force, it will not have the support of parts in the machine, and the shaft may be broken. Therefore, the planetary reducer manufacturer shall make factory inspection after production, and leave the factory after passing the inspection.

3、 The customer has errors in model selection, and sometimes the customer doesn't understand this problem very well. It's possible that the torque is small when he selects, but when there is a large torque, the output shaft can't bear it, so it's normal for the planetary reducer to break the shaft.

Therefore, Hengyu Guoqiang Xiaobian reminds everyone to be sure to see the required models and necessary parameters and specifications when selecting planetary reducer, so as to avoid unnecessary trouble in the future.