Inspection of bearing operation process
2023-04-11
How to determine if there is a problem with a running bearing? It can be determined by checking the rolling sound, vibration, temperature, lubrication status, etc. of the bearing.
1. Rolling sound of bearings
Use a sound detector to check the size and sound quality of the rolling sound of the running bearing. Even if there is slight peeling or other damage to the bearing, abnormal and irregular sounds will be emitted, which can be distinguished using a sound detector.
2. Vibration of bearings
Bearing vibration is very sensitive to bearing damage, such as peeling, indentation, rust, cracks, wear, etc., which can be reflected in bearing vibration measurement. Therefore, by using a special bearing vibration measuring device (frequency analyzer, etc.), the magnitude of vibration can be measured, and the specific abnormal situation can be inferred through frequency. The measured values vary depending on the usage conditions of the bearings or the installation position of the sensors, so it is necessary to analyze and compare the measured values of each machine in advance to determine the judgment criteria.
3. Temperature of bearings
Usually, the temperature of the bearing gradually increases with operation and reaches a stable state after 1-2 hours. The normal temperature of bearings varies depending on the heat capacity, heat dissipation, speed, and load of the machine. If the lubrication and installation parts are suitable, the bearing temperature will suddenly rise and abnormal high temperatures will occur. At this time, the operation must be stopped and necessary preventive measures must be taken. The use of a thermal sensor can monitor the working temperature of the bearing at any time, and achieve automatic alarm or stop when the temperature exceeds the specified value, to prevent shaft accidents from occurring.
4. Lubrication status of bearings
Lubrication is of great significance for rolling bearings. Lubricants in bearings not only reduce friction resistance, but also play a role in heat dissipation, reducing contact stress, absorbing vibration, and preventing corrosion. They are also essential conditions for stable operation of rolling bearings.
For bearings, lubrication is an important issue that affects their performance. The suitability of lubricants or lubrication methods will greatly affect the lifespan of bearings.
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