Because TIMKEN imported bearings are high-precision products, if the assembly is improper, it is easy to damage the bearing channel, resulting in bearing damage. The bearing should have a special mold during assembly. It can't be beaten at will. When pressing the shaft, it can only be subjected to small force. When pressing the large circle, it can only be subjected to large force. Air pressure or hydraulic pressure is required for assembly. The upper and lower molds should be outside the horizontal state during press-fit. If the tilting causes the bearing channel to be damaged due to the force, the bearing will be audible.
When the bearing is mounted on the rotor for dynamic balance, it is easy to enter the iron filings generated during the dynamic balance into the TIMKEN imported bearing. Therefore, it is better to balance the load before loading the bearing. Some manufacturers have some oil or grease to lubricate the bearing chamber during assembly. However, it is often difficult for the operator to control the amount. If the oil or grease accumulates in the bearing chamber, the bearing is very rotating. Easy to enter the inside of the bearing along the shaft. It is best not to apply oil or grease to the bearing. If it is not painted, it must be controlled to not accumulate in the bearing chamber.
The characteristic of paint rust is that it is mostly in the sealed motor. The sound of the motor is very good when it is assembled. However, after some time is put in the warehouse, the abnormal noise of the motor becomes very large, and the bearing is severely rusted. In the past, many manufacturers thought that it was a bearing problem. After our constant publicity, the motor factory has now realized that it is mainly a problem of insulating varnish. This problem is mainly caused by the fact that the acidic substance volatilized by the insulating paint forms a corrosive substance under a certain temperature and humidity, and the TIMKEN imported bearing is damaged after the channel is corroded. The problem can only be achieved by selecting a good insulating varnish and venting it after drying for a while.
The life of the bearing is closely related to the manufacture, assembly and use. It must be done at every step in order to keep the bearing in optimal operation and prolong the service life of the bearing.
Drop a few drops of oil on the filter paper and take a clean red filter paper. After the lubricating oil leaks, if there is a black powder on the outside, the hand touch has a feeling of resistance, which means that there are many impurities in the lubricating oil. The good lubricating oil has no powder, and the hand is dry and smooth, and has yellow marks.
Grease is very critical if used in the process of importing bearings from TIMKEN. The use of a modified grease not only does not function as expected, but also damages the bearing.
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