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How to check the failure of bearings in operation and how to deal with it

  Let's discuss how to check the rolling sound, vibration, temperature and lubrication state of imported bearings in the running process, so as to find and solve problems in time and avoid unnecessary economic losses.

  Today is mainly to check the import bearing rolling sound, vibration and temperature of these aspects. Lubrication will be described in more detail in future articles.

  First of all, according to the rolling sound of the imported bearing to identify and check, we can use a sound detector, the running of the imported bearing rolling sound size and sound quality to check. Because even if the imported bearing has slight peeling and other damage, it will emit abnormal sound and irregular sound, so the sound detector can be used to distinguish, play the role of prevention in advance.

  Secondly, the vibration of imported bearing at work is identified and checked. The vibration of imported bearing is very sensitive to bearing damage. For example, spalling, indentation, corrosion, crack, wear and other factors can be reflected in the vibration measurement of imported bearing. Therefore, the vibration size can be measured by using a special imported bearing vibration meter (frequency analyzer, etc.), and the specific abnormal situation cannot be inferred from the frequency division. The measured value varies with bearing conditions or sensor installation position, so it is necessary to analyze and compare the measured value of each machine in advance to determine the judgment standard.

  It is checked according to the temperature of the imported bearing. The temperature of the imported bearing can be inferred according to the temperature of the outdoor surface of the imported bearing. If the temperature of the outer ring of the bearing can be directly measured by oil hole, it is more suitable.

  Generally, the temperature of the imported bearing rises slowly with the operation and reaches a stable state after 1-2 hours. The normal temperature of the imported bearing 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 high temperature will occur. At this time, the operation must be stopped and necessary preventive measures should be taken. Since temperature is affected by lubrication, rotation speed, load, and environment, the values in the table only represent the approximate temperature range. The use of heat sensor can monitor the working temperature of the bearing at any time, and realize the automatic alarm or stop when the temperature exceeds the specified value to prevent shaft burning accidents.