What should be paid attention to when using 607ZZ deep groove ball bearings?

1. Selection and control of shaft and 607ZZ deep groove ball bearing chamber tolerance: After the deep groove ball bearing is pressed into the deep groove ball bearing, it should rotate flexibly without any sense of blockage. If there is obvious inflexibility in rotation, it indicates that the size of the shaft is too large and the tolerance should be lowered. If the 607ZZ deep groove ball bearing is pressed into the shaft and there is an obvious rustling feeling when turning it by hand, it may be that the tolerance of the shaft is too large or the roundness of the shaft is not good. Therefore, when controlling the tolerance of the shaft and the deep groove ball bearing chamber, the roundness must also be controlled. At present, many domestic manufacturers only control the tolerance, but do not control the roundness.

2. Assembly method of 607ZZ deep groove ball bearings: Because deep groove ball bearings are high-precision products, improper assembly can easily cause damage to the deep groove ball bearing channels, resulting in damage to deep groove ball bearings. 607ZZ deep groove ball bearings should have special molds during assembly, and they cannot be knocked at will. When pressing into the shaft, only small circles can bear force, and when pressing large circles, only large circles can bear force. Pneumatic or hydraulic pressure is required for assembly, and the upper and lower molds must be outside the horizontal state during press assembly. If there is any inclination, the groove of the deep groove ball bearing will be damaged due to force, and the deep groove ball bearing will produce guiding noise.

3. Prevention of foreign matter in 607ZZ assembly: When the deep groove ball bearing is installed on the rotor for dynamic balance, it is easy to enter the iron filings generated during dynamic balance into the deep groove ball bearing, so it is best to do the movement before installing the deep groove ball bearing. balance. For the convenience of assembly, some manufacturers apply some oil or grease in the deep groove ball bearing chamber to lubricate it, but it is often difficult for the operator to control the amount. If the oil or grease accumulates in the deep groove ball bearing chamber , It is easy to enter the deep groove ball bearing along the shaft when the deep groove ball bearing rotates. It is best not to apply oil or grease to the deep groove ball bearing chamber. If it must be applied, it must be controlled so that there is no accumulation in the deep groove ball bearing chamber.

4. Prevention of 607ZZ paint rust: The characteristic of paint rust is that it frequently occurs in the sealed motor. The motor sounds very good when it is assembled, but after it has been placed in the warehouse for some time, the abnormal sound of the motor becomes very loud. Groove ball bearings are severely rusted. In the past, many manufacturers would think that it was the problem of deep groove ball bearings. After our continuous publicity, now the motor factory has realized that it is mainly the problem of insulating paint. This problem is mainly because the acidic substances volatilized from the insulating paint form corrosive substances at a certain temperature and humidity, which corrodes the grooves of the deep groove ball bearings and causes the deep groove ball bearings to be damaged. At present, the problem can only be to choose a good insulating paint and assemble it after drying for a period of time. The life of deep groove ball bearings is closely related to manufacturing, assembly, and use. Every link must be done well to keep the deep groove ball bearings in the best operating condition, thereby prolonging the service life of deep groove ball bearings.

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