What Is The Reason For The Broken Shaft Of The Motor?

Date: 2023-06-03     From: Longding     Author: admin

The function of the vibrating motor is to convert electrical energy into mechanical energy. In the process of energy conversion, a pulley or coupling is installed on the output shaft, and then the torque is transmitted through the belt or coupling to drive the equipment to run and do work. The fracture position of the broken shaft of the motor is basically concentrated at the root of the shaft extension, the root of the bearing position, and the end of the web with the web shaft. Different locations and different fracture lines will have different reasons.

Causes of motor shaft breakage

1. Improper assembly

The motor is not concentric with the equipment it is driving, causing the motor to bear excessive radial loads, which eventually leads to metal fatigue. When the radial load on the motor shaft extension end is too large, the motor shaft will be bent and deformed 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 fracture location is generally near the bearing.

2. Excessive vibration of equipment and motor

If the motor is not fixed firmly, the entire foundation is unstable, and it shakes during operation, resulting in unstable pulling force of the motor belt, and the shaft is damaged when the pulling force is large.

3. Shaft design flaws

Shafts are also prone to breakage if there is a sudden change in diameter. But this problem is relatively rare, and there will be related requirements in the motor design specification.

4. Stress not released after web shaft welding

This problem often occurs in the case of large-scale motor web shafts, and most of the occurrences are concentrated at the position where the end of the web is combined with the main shaft. The broken lines of the shaft are irregular, and most of the early faults of the motor appear to be sweeping, which can only be found in the later inspection process.

The broken lines of the shaft are irregular, and most of the early faults of the motor appear to be sweeping, which can only be found in the later inspection process. Broken shaft is a relatively complicated problem, and both the motor manufacturer and the user must pay attention to this problem in order to avoid similar problems.