1. Improper device:
The motor is not concentrious with the equipment being dragged, resulting in excessive radial load on the motor, which eventually leads to metal exhaustion. When the radial load on the extension end of the motor shaft is too large, it will cause the motor shaft to have zigzag deformation in the radial direction. When the motor rotates, the shaft is deformed by torsion in all directions, which eventually causes the motor shaft to break, and the cracking location is generally close to the bearing. Regarding the selection of the motor with pulley connection, but when some customers match the pulley to the motor output shaft, because the pulley is too heavy or the belt device is too tight, it will cause the motor to continue to be subjected to the effect of variable stress during the operation of the motor, and the maximum bending moment of this stress on the shaft is near the fulcrum of the output shaft bearing, and the repeated impact causes fatigue, so that the shaft gradually cracks, and finally completely cracks.
2. Excessive vibration of equipment and motor during operation:
If the motor is not fixed firmly, such as running on the frame, the whole base is unstable, and it shakes during operation, resulting in the unstable pull of the motor belt, and the damage to the shaft when the tension is large.
3. Other reasons:
The load is momentarily too large; Small horse-drawn carts, motor shafts are in a state of exhaustion for a long time; External collisions will also cause shaft breakage, which is a relatively messy problem, and the motor device and other problems can be checked from time to time during use to prevent problems.
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