1. Selection and control of shaft and bearing chamber tolerances After the INA bearing is pressed into the 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 INA bearing is pressed into the shaft and there is an obvious 'sand' 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 bearing chamber, the roundness must also be well controlled. At present, many domestic manufacturers only control the tolerance, but do not control the roundness. 2. Prevention of paint rust The characteristic of paint rust is that it often occurs in sealed motors. The motor sounds very good when assembled, but after being placed in the warehouse for some time, the abnormal noise of the motor becomes very large. Remove the INA bearings. Severe rust. In the past, many manufacturers would think that it was the problem of INA 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 INA bearing groove and causes the INA bearing 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. 3. The assembly method of INA bearings Because INA bearings are high-precision products, improper assembly can easily cause damage to the INA bearing channel, resulting in damage to the INA bearing. When INA bearings are assembled, there should be a special mold, and they cannot be knocked at will. When pressing into the shaft, only a small circle can bear force, and when pressing a large circle, only a large circle can bear force. It is required to use air pressure or hydraulic pressure during assembly, and the upper and lower dies should be outside the horizontal state during press assembly. If there is any inclination, the INA bearing channel will be damaged due to force, and the INA bearing will produce guide noise. 4. Prevention of assembling foreign matter When INA bearings are installed on the rotor for dynamic balancing, it is easy to enter the iron filings generated during dynamic balancing into the interior of INA bearings, so it is best to do dynamic balancing before installing INA bearings. For the convenience of assembly, some manufacturers apply some oil or grease to the bearing chamber for lubrication, but it is often difficult for operators to control the amount. If oil or grease accumulates in the INA bearing chamber, it will It is easy to enter the inside of the INA bearing along the shaft. It is best not to apply oil or grease to the Japanese INA bearing chamber. If it must be applied, it must be controlled so that there is no accumulation in the bearing chamber. The service life of INA bearings is closely related to manufacturing, assembly and use, and each link must be done well in order to keep INA bearings in the best operating condition and prolong the service life of INA bearings. After exercising for a period of time, the vibration and noise remain at a certain level, and the frequency spectrum is very single, with only one or two times frequency appearing. The spectrum above three times the power frequency rarely appears, and the state of the INA bearing is very stable, and it has entered a stable working period. After continuing to run, the vibration and noise of INA bearings began to increase, and sometimes there were abnormal sounds, but the change of vibration increase was relatively slow. At this time, the kurtosis value of INA bearings suddenly reached a certain value. We believe that at this time, the INA bearing is showing an initial failure. At this time, it is required to closely monitor the INA bearing and pay close attention to its changes. Since then, the INA bearing kurtosis value began to decline rapidly and approached the normal value, while the vibration and noise began to increase significantly, and the increase rate began to accelerate. When the vibration exceeded the vibration standard (such as the ISO2372 standard), the INA bearing kurtosis value It also begins to increase rapidly. When both the vibration standard and the kurtosis value exceed the normal value (the available kurtosis is relative to the standard), we think that the INA bearing has entered a late failure production, and it is necessary to repair the equipment in time and replace the rolling INA bearing. INA bearings show late failure characteristics to serious failures (generally INA bearing damage such as shaft holding, burns, sand frame spalling, raceway, bead wear, etc.) generally do not exceed one week, the larger the equipment capacity, the faster the speed , the shorter the interval. Therefore, in the actual rolling INA bearing fault diagnosis, once the late fault features are found, it should be decisively judged that the INA bearing is faulty and arrange maintenance as soon as possible.
If you are a Hrb Bearing China fan, you definitely want to enjoy the best possible. The that you choose plays a major role with the kind of experience you have when using it.
We are dedicated to providing you with more than just customer service by utilizing our qualified team who pride themselves on meeting and exceeding customer's needs. We also have ell-equipped plantin China with advanced facilities to manufacture Bearing Suppliers CONTACT US products according to customers requirements. Welcome to send your enquiry and visit our factory. Our website is JNSN Bearing .
Many of the CONTACT US listed here can be purchased for less money, but in general we recommend paying a slightly higher price for significantly improved performance. These are our top choices and their recommended configurations.
HangZhou Jnsn Bearing Imp& Exp Co., Ltd, which prides itself on CONTACT US for applying in different ways.
HangZhou Jnsn Bearing Imp& Exp Co., Ltd has a number of producing line for producing CONTACT US.