Hypersonic hair dryer Factory.How to protect bearings when using a hair dryer

　　Although we are very clear about the role of hair dryer bearings, some problems with hair dryers are inevitable in use. Some problems we feel are harmless, but some problems can affect the effectiveness of hair dryers. This is also why many users feel that the effectiveness of hair dryers is relatively low, especially the use of fan bearings is more prominent among these problems. Therefore, let me give you a detailed introduction to the problem of bearings with hair dryers.

　　The two sides of the impeller are fixed and matched with the bearing seat bearings using a locking sleeve. The fault of high temperature and vibration value of the free end bearing occurred during the retest. After removing the upper cover of the bearing turn and manually rotating the fan at a slow speed, it was found that the bearing roller at a specific position on the shaft was also rolling in the non load area. This can determine that the bearing running clearance changes excessively and the installation clearance may be insufficient.

　　Due to the large span of the left and right bearings, it is difficult to avoid shaft deflection or bearing installation angle errors. Therefore, the electric hair dryer adopts spherical roller bearings that can automatically adjust the center. The internal clearance of the bearing decreases with the increase of the fit tightness and cannot form a lubricating film. When the running clearance of the bearing decreases to zero due to temperature rise, if the heat generated by the bearing operation is still greater than the dissipated heat, the bearing temperature will quickly climb. At this time, if the machine is not stopped immediately, the bearing will eventually burn out. The tight fit between the bearing inner ring and the shaft is the reason for the abnormal high temperature of the bearing operation.

　　These are all the reasons that cause problems with the bearings of hair dryers, and they are also some of the problems that users struggle with during the use of hair dryers. Now that we have found the cause of the problem, we can naturally find a solution to the problem. When dealing with it, remove the tightening sleeve, readjust the fit between the shaft and the inner ring, and take a clearance of 0.10mm after replacing the bearing. After reinstallation, restart the hair dryer, and the bearing vibration value and operating temperature have returned to normal.

　　The small internal clearance of bearings or poor design and manufacturing accuracy of components are the main reasons for the high operating temperature of the unit bearings, in order to facilitate the installation of hair dryer equipment; Dismantling and maintenance. Generally, bearing seat bearings with tight sleeve bearing cone hole inner ring fit are used in design, but problems can also occur due to negligence in installation procedures, especially the adjustment of appropriate clearances.

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