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Check the necessary measures for troubleshooting of SKF combined bearings in operation

wallpapers News 2021-01-18
From the point of view that peeling, indentation, rust, cracks, wear, etc. will be reflected in the vibration measurement of the combined bearing, SKF bearing vibration is very sensitive to the damage of the bearing. Therefore, through the use of a special bearing vibration measurement device (frequency analyzer Etc.) The magnitude of the vibration can be measured, and the specific abnormal situation cannot be inferred through the 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 the judgment standard.
Because SKF bearings will emit abnormal and irregular sounds even if they are slightly damaged such as peeling, so the sound meter can be used to distinguish, and the sound meter can be used to check the size and sound quality of the rolling sound of the combined bearing in operation, Play a preventive role in advance.
If the oil hole can be used to directly measure the temperature of the SKF bearing outer ring, it is more appropriate. 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 abnormally high temperature will occur. At this time, the operation must be stopped and the necessary precautions must be taken. Generally, the temperature of the combined bearing slowly rises with the operation and reaches 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. When necessary, a 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 combustion shaft accident.
When rotating the SKF bearing, it should be very smooth and without abnormal noise, and there should be no impurities. The combined bearing is allowed to have a slight running noise during work. If the noise is too loud or there is abnormal noise or impact, it indicates that the bearing is faulty. Bearing anti-rust treatment adopts anti-rust oil with slight fragrance, and the amount is not large. Make the entire combined bearing clean and fragrant. During normal use of SKF bearings, a certain temperature is allowed at the location where the bearings are installed. When touching the mechanism housing with your hands, it is normal to not feel hot. If the temperature of the rolling bearing is too high, you can consider whether the quality of the lubricant meets the requirements or deterioration, and the viscosity of the lubricant is too high; or the installation mechanism is too tight, the bearing is too tight, and the bearing cage or rolling elements are broken.

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