When a motor shaft breaks, it means that the motor shaft or a part connected to the shaft breaks during operation. Motors are critical drivers in many industries and equipment, and shaft breakage can cause the equipment to stop running, resulting in production interruptions and losses. The following article explains the causes of motor shaft breakage.

01 Overload

Shaft breakage occurs when a motor is subjected to work that exceeds its rated load. Overload can be caused by a sudden increase in load, equipment failure, or improper operation. When a motor cannot cope with excessive loads, its internal materials may not be able to withstand the pressure and break.

02 Unbalanced Load

If an unbalanced load is installed on the motor shaft, it will cause increased vibration and impact force during rotation. These vibrations and impact forces will cause stress concentration on the shaft and eventually lead to shaft breakage.

03 Shaft material problem

The quality of the motor shaft material may also cause the shaft to break. If the shaft material does not meet the requirements, such as defects, insufficient material strength or expired service life, it will be easy to break during operation.

04 Bearing failure

The motor bearing is an important component that supports the operation of the shaft. When the bearing is damaged or excessively worn, it will cause abnormal friction of the shaft during operation, increasing the risk of shaft breakage.

05 Design or manufacturing defects

If there are problems in the design and manufacturing process of the motor, it may also cause the shaft to break. For example, if the load change factor is ignored during the design process, there are material quality problems or improper assembly during the manufacturing process, etc., all of which may cause the motor shaft structure to be unstable and easy to break.

06 Vibration and shock

The vibration and impact force generated by the motor during operation will also have an adverse effect on its shaft. Long-term vibration and impact will cause metal fatigue and eventually cause shaft breakage.

07 Temperature Issues

The motor may generate excessively high temperatures during operation. If the temperature is not properly controlled and exceeds the tolerance limit of the material, the shaft material will expand and contract unevenly due to heat and cold, resulting in breakage.

08 Improper maintenance

Lack of regular maintenance and care is also one of the common causes of motor shaft breakage. If the dust, foreign matter and lubricating oil inside the motor are not cleaned in time, the motor’s running resistance will increase, causing the shaft to be subjected to unnecessary stress and break.

To reduce the risk of motor shaft breakage, the following suggestions are for reference:

01 Choose the right motor

Select a motor with appropriate power and load range according to actual needs to avoid overload operation.

02 Load Balancing

When installing and adjusting the load of the motor, be sure to keep it balanced to avoid vibration and shock caused by unbalanced load.

03 Use high-quality materials

Select high-quality and standard motor shaft materials to ensure its strength and fatigue resistance.

04 Regular maintenance

Carry out regular inspection and maintenance, clean foreign matter and dust inside the motor, keep the bearings in good condition, and replace severely worn parts.

05 Control the temperature

Monitor the operating temperature of the motor and use measures such as radiators or cooling devices to control the temperature to avoid overheating and adverse effects on the shaft.

06 Adjustment and correction

Regularly check and adjust the motor’s alignment and balance to ensure proper operation and stability.

07 Training operators

Provide operators with correct operating instructions and training to ensure they understand the correct operating methods and maintenance requirements.

In summary, motor shaft breakage may be caused by a variety of reasons, such as overload, unbalanced load, shaft material problems, bearing failure, design or manufacturing defects, vibration and shock, temperature problems, and improper maintenance. By properly selecting motors, balancing loads, using high-quality materials, regular maintenance, and training operators, the risk of motor shaft breakage can be reduced to ensure the normal operation of the motor and the continued stability of the equipment.

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Post time: Sep-20-2024