Us understand INA of rolling mill bearing vibration noise during the operation of injury problems

Impact of the rolling element and its control method for larger models of INA bearings under pure radial load speed, due to centrifugal force is lesser, roller in the rolling body will impact the load area or race and making noises. But with the increase of rotational speed, the noise will disappear. Control method of rolling body impact sound: decrease the radial clearance, materials for use with reasonable structure and flexibility of rolling mill bearing cage. Generally, if the correct use of INA bearings, can be used to achieve fatigue life. But there will be unexpected injury prematurely, no ability to use. The early damage and fatigue life, called the fault or the quality of the accident to use limit. Much due to the installation, use, do not pay attention on the lubrication, intrusion of foreign bodies from outside, to the shaft, shell heat affected study enough. About INA bearing damage status, such as: roller bearing ring guard card, as a reason to consider, lack of lubricant, not suitable for, for the defect of oil discharge structure, foreign invasion, rolling mill bearing installation error, the deflection of the shaft is too large, also can have these reasons. Therefore, only investigate bearing damage, the real reason is hard to come by injury. But, if you know the use of imported bearings machinery, the structure of the surrounding conditions of use, rolling mill bearings and understand before and after the accident, combined with several damage status and causes of INA bearings, can prevent the similar accident happen again. Rolling mill bearing of rolling mill and its control method is rolling mill bearing in the harsh metal can occur in all occasions, mostly happens in large type bearing grease lubrication, and in the base oil performance degradation occurred more often in the grease, almost does not occur when oil lubrication. In addition, more easily occur during the winter, when under pure radial load, the radial clearance prone to big occasions, and with different size, easy to happen in a certain speed range, both continuous and intermittent. External ring raceway take special processing method can prevent the occurrence of roll ring, can choose this kind of bearing, if necessary or appropriate to reduce bearing radial clearance, the use of high performance grease and improve the rigidity and rolling mill bearings are suitable parts. INA bearing raceway groove sound sound and its control method is when bearing is running, the roller rolling on the surface of the raceway and a line of continuous sound, happened all rolling mill bearing characteristic of the basic sound. General bearing ring raceway is combined with other sounds. Ball bearing raceway is irregular, frequency above 1000 hz, its main frequency does not change with speed, but its total sound pressure level increases with speed to speed up.