(1) Place the fixing flange on the crossed cylindrical roller bearing and shake the fixing flange several times to match the position of the bolt holes.
(2) Insert the fixing bolts into the holes and turn the bolts by hand to confirm that the bolts are not difficult to screw in due to the deviation of the bolt holes.
(3) The locking of the fixing bolts can be divided into 3-4 stages from incomplete locking to full locking, and they are repeatedly tightened in the order on the diagonal. When tightening the inner or outer ring of the split body, the deviation of the inner and outer rings from the main body can be corrected by slightly turning the whole outer or inner ring.
After the crossed cylindrical roller bearing is pressed into the bearing, it should rotate flexibly without any sense of blockage. If the rotation is obviously inflexible, it indicates that the size of the shaft is too large and the tolerance should be reduced. If the imported bearing is pressed into the shaft and there is an obvious "sand" feeling when it is rotated by hand, it may be that the tolerance of the shaft is too large or the roundness of the shaft is not good.
Because the crossed cylindrical roller bearing is a high-precision product, it is easy to damage the bearing channel if it is improperly assembled, resulting in bearing damage. The crossed cylindrical roller bearing should have a special mold when assembling, and can not be beaten at will. When pressing into the shaft, only a small circle can be stressed, and when a large circle is pressed, only a large circle can be stressed.
When the crossed cylindrical roller bearing is installed on the rotor for dynamic and static balance, it is easy for the generated iron filings to enter the inside of the bearing, so it is better to do dynamic and static balance before installing the bearing.
During assembly, the staff will apply grease in the bearing chamber to achieve a lubricating effect, but if the amount of use is not well controlled, it will lead to excessive accumulation of grease in the bearing chamber, and it is easy to enter the bearing when the crossed cylindrical roller bearing rotates. Therefore, the bearing chamber should not be coated with oil or grease. If coating is necessary, it must be controlled that there is no accumulation in the bearing chamber.
The characteristic of paint rust is that it mostly occurs in the sealed motor. The motor has a good sound during assembly, but after being placed in the warehouse for some time, the abnormal noise of the motor becomes very large, and the bearing is seriously rusted after removing it. In the past, many manufacturers thought it was the bearing problem. After continuous publicity, the motor factory has now realized that the main problem is the insulating paint. Therefore, it is necessary to choose a good quality insulating paint, and then assemble it after drying and ventilation.
The above describes the installation method and precautions of the crossed cylindrical roller bearing in detail. In order to ensure the service life of the crossed cylindrical roller bearing, it is necessary to do the correct installation, and pay attention to the assembly method and tolerance during installation. Control and lubrication control details.
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