When the shaft is subjected to pollution, the following fault phenomena may occur, and corresponding diagnosis can be carried out:
1. Abnormal noise: After the shaft is subjected to pollution, friction increases, which may produce abnormal noise, such as chattering, harsh sound, or metal collision sound. These noises may become more pronounced during bearing operation.
2. Increased vibration: Contaminants form uneven friction inside the bearing and may cause rotational imbalance, thereby increasing vibration levels. You can use vibration monitoring equipment to detect changes in vibration.
3. Temperature rise: Bearing contamination can lead to higher friction and heat generation, which may lead to an increase in temperature of bearings and surrounding components. You can use an infrared thermometer or temperature sensor to measure the temperature change of the bearing.
4. Poor lubrication status: Contaminants such as dust, particulate matter, moisture, etc. may contaminate the lubricant, leading to poor lubrication status. You can check whether the lubricant has foreign objects mixed in, deteriorated, or decreased.
5. Shortened service life: Bearing contamination may lead to premature wear and damage, thereby shortening the service life of the bearing.
If it is suspected that the shaft has been contaminated and caused a malfunction, the following diagnostic and disposal methods can be considered:
1. Visual inspection: Check the appearance of bearings for obvious pollutants such as dust, sediment, etc. through the eyes or with the help of a magnifying glass or the equipment being photographed.
2. Lubricant analysis: Sample the bearing lubricant for analysis to determine whether there are abnormal pollutants and changes in lubrication status.
3. Cleaning and lubricant replacement: If obvious pollutants are found, it can be considered to clean the bearing and update the lubricant.
4. Protective measures: Strengthen protective measures during bearing installation or equipment operation, including the use of sealing or dust prevention devices to prevent pollutants from entering the bearings.
Please note that the above guidance is for reference only, and the specific diagnosis and treatment methods may vary depending on the actual situation. It is recommended to consult Shanghai Anding Yitai Technical Engineer 136-2180-8094 when bearing fault diagnosis and treatment are needed
