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What are the real causes of bearing heating?

wallpapers Low Carbon 2020-09-28
In industrial production, the use of various machinery and equipment is indispensable. Under normal circumstances, if the bearing temperature is too high or hot when the machine is in use, it is generally because the machine is malfunctioning. If you can’t find out in time and make the correct treatment, it may result in half the effort. If it is more serious, it may also shorten the service life of the bearings, increase the maintenance cost, and even the bearings scrap. These are all possible things. .
Therefore, it is essential to find out the real cause of machine failure in time and accurately and take appropriate measures to deal with the problem. It is indispensable in the operation and maintenance of equipment. Today, the editor will first analyze the one most frequently encountered in use. The cause of the bearing heating problem.
1. Poor lubrication Lubrication has an important impact on the service life of the bearing and friction, wear, vibration, etc. Good lubrication is a necessary condition to ensure the normal operation of the bearing. According to statistics, about 40% of bearing damage is related to poor lubrication.
However, the factors that usually cause poor bearing lubrication are:
1) Insufficient lubricant
2) The lubricating oil pipe is blocked by foreign matter, etc.
3) There is a problem with lubricant quality
4) Lubricant was not added on time
5) The lubricant contains impurities
2. Bearing wear
Bearings, as an important part, are used in various large and small machinery, and some machinery (such as crushers) have a lot of dust in the working environment. When some fine dust enters the high-speed bearing housing, the lubricating oil or grease in the bearing housing will deteriorate. , Poor lubrication, and then the bearing wear. Bearings continue to run under wear conditions, due to increased friction and heat increase, which leads to higher bearing temperature
3. Improper installation
Improper installation is another important reason for bearing heating. Because the bearing is installed correctly or not, it has a direct impact on its life and the accuracy of the main engine, so the center line of the shaft and the bearing hole must be coincident during installation. If the bearing is installed incorrectly, the accuracy is low, and the bearing has deflection, torque will be generated during rotation, causing the bearing to heat or wear. In addition, the bearing will generate vibration, increase the noise, and increase the temperature rise.
4. Improper bearing selection
When selecting a bearing, you should pay attention to the limit speed and load capacity of the bearing. It cannot be used at excessive speed or overload. This will only shorten the service life of the bearing, and the gain will not be worth the loss.

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