INA bearing will change its bearing capacity, rotation precision and wear resistance due to its own quality and external conditions during use. When the performance index of INA bearing is lower than the use requirements and cannot work normally, INA bearing will occur. If the fault occurs or even fails, the INA bearing will stop after the failure, and the machine and equipment will stop and there will be various abnormal phenomena such as loss of function. Therefore, it is necessary to find out the cause in a short period of time and take corresponding measures.
In order to ensure that INA bearings can maintain their proper performance under long-term conditions and must be used for a long time. INA bearings must be inspected and maintained. Inspection and maintenance are very important to prevent malfunctions. In operation, it is important to check the rolling sound of INA bearings. , vibration, temperature and lubricant.
2. Vibration of INA bearings
The vibration of INA bearing has obvious influence on the failure of INA bearing. For example: peeling, indentation, corrosion, crack, wear, etc. will be reflected in the vibration test of INA bearing, so the special INA bearing vibration measuring device (frequency analyzer) is adopted. And the vibrometer, etc.) can measure the magnitude of the vibration, and the specific situation of the abnormal vibration can be inferred by the frequency distribution. The measured value differs depending on the use conditions of the INA bearing or the mounting position of the sensor, and therefore needs to be in advance for each machine. The measured values are analyzed and compared to determine the criterion.
3. INA bearing temperature
Usually, the temperature of the INA bearing rises slowly with the start of operation, and reaches a steady state after 1 to 2 hours. The normal temperature of the INA bearing varies with the heat capacity, heat dissipation, speed and load of the machine. If lubrication or installation is not suitable, then The temperature of the INA bearing will rise sharply and abnormal temperature will occur. At this time, it is necessary to stop the machine and take necessary precautions.
4. Lubricant
Lubrication has an important influence on the fatigue life and friction, wear, temperature rise, vibration, etc. of the rolling INA bearing. Without normal lubrication, the INA bearing can not work. Analysis of the damage of the INA bearing indicates that about 40% of the INA bearing damage is associated with Lubrication is related. Therefore, the good lubrication of INA bearings is an effective measure to reduce the friction and wear of INA bearings. In addition, the lubrication of INA bearings also plays a role in heat dissipation, rust prevention, sealing, and mitigation. Can not expire, the selection should be correct. The lubrication of the INA bearing of the harvester is divided into oil lubrication and grease lubrication. For large gearbox oil lubrication, GL-5 80W90 gear oil is used. Grease lubrication is generally lubricated with lithium molybdenum disulfide. Grease, lubricator, stepless speed change lower unit must be lubricated with Mobil XHP222 or better grease.
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