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How to check the performance of SKF bearings after installation

wallpapers Tech 2021-01-08
When we are using the SKF bearing, if it is found that the temperature is very high, we should stop the equipment as soon as possible, and then find out the reason, and deal with it according to the solution provided above, but it may be due to different reasons for the bearing heating, so The solution is also different, so it is still necessary to deal with specific situations and complete with the help of technicians.
 
1. To check the temperature of the SKF bearing when it is rotating, it is more appropriate if the oil hole can be used to directly measure the temperature of the outer ring of the bearing. Under normal circumstances, the temperature of the bearing can generally be estimated based on the temperature outside the bearing housing. If the lubrication and installation parts are proper, the bearing temperature will rise sharply and an abnormally high temperature will occur. At this time, the operation must be stopped and the necessary precautions must be taken.
 
2. Check the sound of the bearing when it is rolling. Even if the bearing is slightly peeled off and other damages, it will emit abnormal and irregular sounds, so it can be distinguished by a sound meter. The sound meter is used to roll the bearing in operation. The size and quality of the sound can be checked to prevent it in advance.
 
3. Check the vibration of SKF bearings at work, from peeling, indentation, rust, cracks, wear, etc., which will be reflected in the vibration measurement of the bearing. Bearing vibration is very sensitive to the damage of the bearing. Therefore, through the use of special bearings Vibration measuring devices (frequency analyzers, etc.) can measure the magnitude of vibration, and the specific conditions of the abnormality cannot be inferred through frequency division. Since the measured values ​​are different due to the use conditions of the bearing or the installation position of the sensor, it is necessary to analyze and compare the measured values ​​of each machine in advance to determine its judgment standard.
 
Generally, the temperature of the bearing slowly rises as it starts to run. The introduction and application of the bearing coating removal process will reach a stable state after 1-2 hours. The normal temperature of the bearing varies with the heat capacity, heat dissipation, speed and load of the machine.
 
Whether on the shaft or in the bearing housing, SKF bearings require their position to be fixed in three directions: radial, axial and tangential directions. Radial and tangential positioning are achieved by tightly fitting the bearing rings. However, the axial positioning only uses tight-fitting in a few cases; generally axial limiting parts, such as end caps and retaining rings, are used to connect the shaft The direction position is limited to the clearance range.

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