This paper analyzes the reason of the NSK bearing vibration and noise

Usually when we use the imported bearing, began to work for a while after the temperature was increased, but the usual temperature is 10 ~ 40 degrees or so, in the range of this value is to belong to normal, some bearing because size form, different running speed, lubrication methods lead to some bearing heating slowly. NSK bearings when did not reach the norm of the abnormal temperature, consider the following factors, and then quickly stop treatment may cause unnecessary loss. First, the bearing of the main causes of abnormal temperature rise of the second, bearing lubricating oil too much or too little. Third, the installation of the bearing. Fourth, bearing internal clearance is too small, or too much load. Fifth, bearing seal friction is too large. Only know the cause of the bearing temperature can better find a solution. Late fault character of rolling bearing to severe fault ( For bearing damage, such as holding shaft commonly, burns, sand spallation, raceway, wear beads, etc. ) Most of time not more than a week, the bigger the equipment capacity, the faster the speed, the shorter the time interval. Therefore, in the actual fault diagnosis of rolling bearing, once found late fault characteristics, NSK bearings should be decisive judgment fault, arrange inspection as soon as possible. Rolling bearing vibration and noise began to increase the movement after a period of time, maintain a certain level of vibration and noise, the spectrum is very single, only one or two times the frequency. More than three times the power frequency spectrum, seldom appears bearing condition is very stable, steady working period. Continue to run into the use of late, after rolling bearing vibration and noise began to increase, sometimes a different sound, but the change of vibration increase is relatively slow, at this point, the bearing kurtosis value began suddenly reaches a certain value. We believe that the rolling bearing is characterized by the early failure. NSK bearings made popular to through forging, hot freedom, turning processing, grinding and assembly process. The rationality of the processing technology, advanced, stability will also affect the service life of bearing. Freedom and affecting the quality of scrap bearing grinding process, often have a more direct relationship with bearing failure. Layer of bearings working surface transformation in recent years of the study indicate that is close to the grinding process and the surface quality of bearing. First obligation of bearing using life is based on a large entourage of information, analyze the data and the failure pattern of postures, find a bearing failure of the primary elements, so that the improvement measures are put forward, and delay the retirement period of NSK bearings, avoid anger burst in the early failure of the bearings.