Bearing temperature is too high, similar to the abnormal situation of "fever", which is a common and harmful fault of rotating equipment. If the reason is unknown and the treatment is not proper, it will often achieve half the effort, which will reduce the service life of bearings, increase the cost of maintenance, and even cause the burnout of bearings.
Therefore, it is the guarantee of continuous and safe operation of equipment to quickly judge the cause of the failure and take appropriate measures to solve it.
There are many reasons leading to the high temperature of bearings. Several common problems have been sorted out for you.
Lubrication has an important influence on the service life, friction, wear and vibration of bearings. Good lubrication is a necessary condition to ensure the normal operation of bearings. According to statistics, about 40% of bearing damage is related to poor lubrication.
Bearing as an important part, is used in all kinds of large and small machinery, and some machinery (such as crusher) has a lot of dust in the working environment. When some fine dust enters the high-speed running bearing seat, the lubricating oil or grease in the bearing seat deteriorates and lubricates poorly (public number: pump housekeeper), and then the bearing wears and tears.
Bearings continue to operate under wear condition, because of the increase of friction and heat, which leads to the increase of bearing temperature.
Improper installation is another important reason for bearing heating. Because whether the bearing is installed correctly or not has a direct impact on its life and the accuracy of the main engine, it is required that the axis and the center line of the bearing hole coincide.
If the bearing is installed incorrectly, the accuracy is low, and the bearing has deflection, the moment will be generated when the bearing rotates, which will cause the heating or wear of the bearing. In addition, the bearing will also produce vibration, noise increases, will also increase the temperature rise.
Insufficient cooling is usually manifested as blockage of pipes, inappropriate selection of coolers, poor cooling effect, etc.
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