1. First of all, according to the sound of SKF bearing rolling to identify and check
We can use a sounder to check the size and sound quality of the running SKF bearing rolling sound. Because SKF bearings emit abnormal sounds and irregular sounds even if they are slightly peeled off, they can be distinguished by the sounder, which can prevent them in advance.
2. Secondly, the vibration of the SKF bearing at work to identify the inspection
SKF bearing vibration is very sensitive to bearing damage. For example, peeling, indentation, rust, cracks, abrasion, etc. are reflected in the vibration measurement of SKF bearings. Therefore, the vibration can be measured by using a special SKF bearing vibration measuring device (frequency analyzer, etc.). It is not possible to deduce the specific circumstances of the anomaly. The measured values vary depending on the conditions of use of the bearing or the mounting position of the sensor. Therefore, it is necessary to analyze and compare the measured values of each machine in advance to determine the judgment standard.
3. Finally, check according to the temperature of the SKF bearing
The temperature of the SKF bearing is generally estimated based on the temperature outside the SKF bearing. If the oil hole can directly measure the bearing outer ring temperature, it is more suitable.
Usually, the temperature of the SKF bearing rises slowly as the operation starts, and reaches a steady state after 1-2 hours. The normal temperature of SKF bearings varies with the heat capacity, heat dissipation, speed and load of the machine. If the lubrication and installation parts are suitable, the bearing temperature will rise sharply and abnormal temperature will occur. At this time, it is necessary to stop the operation and take necessary precautions. Based on a large amount of test data, Table 4-1 lists the average value of the outer ring temperature when the bearings are working in various machines for reference. Since the temperature is affected by lubrication, speed, load, and environment, the values in the table only indicate the approximate temperature range. The thermal sensor can be used to monitor the working temperature of the bearing at any time, and automatically alarm the household when the temperature exceeds the specified value or stop the occurrence of the burning shaft accident.
