During the operation of the motor, the bearing plays an important role in supporting the rotor and ensuring the stable rotation of the rotor. The axial clearance of the bearing, that is, the active clearance of the bearing in the axial direction, is a key factor affecting the bearing performance and the operation stability of the motor. Therefore, it is very important to measure and adjust the axial clearance of the motor bearing.
Axial clearance measurement is an important means to evaluate bearing performance and motor operation. By measuring the axial clearance, you can know the wear degree of the bearing, the lubrication status and whether the installation is correct. In addition, the measurement of axial clearance also helps to predict the service life of the bearing, detect potential problems in advance, and avoid motor failures during operation.
The basic principle of axial clearance measurement is to apply a certain force in the axial direction of the bearing, so that the inner and outer rings produce relative displacement, and then measure this displacement. Common measuring methods include feeler method and dial gauge method. The feeler method is suitable for small clearance measurement, while the dial gauge method is suitable for large clearance measurement.
In the axial clearance measurement, it is necessary to select the appropriate measuring point and measuring tool first. The measuring point is usually selected at the shoulder or bearing cap of the bearing. Next, follow the requirements of the selected measurement method to record the measurement data. Finally, the measured data are processed and analyzed to determine whether the axial clearance of the bearing is within the normal range.
According to the measurement results, if the axial clearance of the bearing exceeds the normal range, the bearing needs to be adjusted. The method of adjustment includes replacing the bearing, adjusting the position of the bearing seat or increasing or decreasing the gasket of the bearing cover. After the adjustment is complete, you need to measure the axial clearance again to ensure that the adjustment effect meets the expectations.
When measuring and adjusting axial clearance, the following points need to be noted:
Appropriate measuring tools and correct measuring methods should be used to avoid errors.
When adjusting the bearing, it should be ensured that the adjustment range is moderate to avoid damage to the bearing;
After the adjustment is completed, the axial clearance measurement should be carried out again to ensure that the adjustment effect meets the expectation;
During the whole process, attention should be paid to safe operation to avoid accidents.
This paper introduces the significance and purpose of measuring and adjusting the axial clearance of the motor bearing, the basic principle and common methods, how to measure, how to adjust according to the measurement results and points for attention. By mastering these knowledge and skills, you can effectively evaluate bearing performance and motor operation, identify potential problems in advance, and avoid motor failure during operation. Therefore, it is of great practical significance and application value to measure and adjust the axial clearance of the motor bearing.
