Introduction to rod end spherical plain bearing
Rod end spherical plain bearing vibration is very sensitive to the damage of rod end spherical plain bearing. For example, peeling, indentation, rust, crack, wear, etc. will be reflected in the rod end spherical plain bearing vibration measurement. Therefore, the vibration can be measured by using a special rod end spherical plain bearing vibration measuring device (frequency analyzer, etc.), and the specific abnormal conditions cannot be inferred from the frequency. The measured values are different due to the use conditions of the rod end spherical plain bearing or the installation position of the sensor. Therefore, it is necessary to analyze and compare the measured values of each machine before determining the judgment standard.
The temperature of rod end spherical plain bearing can be inferred from the temperature outside the rod end spherical plain bearing chamber. If the oil hole can be used to directly measure the temperature of rod end spherical plain bearing outer ring, it is more appropriate. Generally, the temperature of rod end spherical plain bearing starts to rise slowly with the operation of rod end spherical plain bearing, and reaches a stable state after 1-2 hours. The normal temperature of rod end spherical plain bearing varies with the heat capacity, heat dissipation, speed and load of the machine. If the lubrication and installation parts are suitable, the temperature of the rod end spherical plain bearing will rise sharply, which will cause abnormal high temperature. At this time, the operation must be stopped and necessary preventive measures must be taken. The thermal sensor can be used to monitor the working temperature of the rod end spherical plain bearing at any time, and automatically alarm or stop when the temperature exceeds the specified value to prevent shaft burning accidents.
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