TIMKEN cylindrical roller bearing vibration noise occurs in the running process

TIMKEN 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 cylindrical roller bearings are 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. Raceway large bearings, the rolling sound of sound pressure level decrease with the increase of the viscosity; The raceway small bearings, the sound pressure level in the viscosity increases to about 20 was/s above, from decreased to increase somewhat. And the rigidity of the bearing, the greater the raceway of the lower the total sound pressure level. Such as radial clearance is too small, the total sound pressure level and race master frequency will increase sharply with the decrease of radial clearance. Method to control the sound of raceway are: choose low noise TIMKEN bearing waviness small TIMKEN bearings, carefully select and use conditions. Race often affect the mechanical noise, reduce the raceway can reduce the mechanical noise. 1, for circular and elliptical bearing clearance, can use manual crapping or bearing faceted padded cutting methods of scratch after adjustment. 2, the tip clearance of circular and elliptical bearings, can be manually crapping or when the situation allows faceted padded method of bearing adjustment. More than 3, the oil wedge fixed bearing, in principle is not allowed to repair and adjust bearing clearance, clearance is improper new tile should be replaced. More than 4, the oil wedge tilting type bearing, are not allowed to fix the tile, clearance is improper for tile should be changed. Segment of thickness is adjustable, can be adjusted through behind the tile under the block and stainless steel pads, or thinning amount adjustment method of block thickness tile. Pay attention to much oil wedge tilting type bearing, group between tile thickness error should be less than 0. 01 mm roller impact noise and its control method is larger models of ball bearings or cylindrical roller 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 the bearing cage. TIMKEN bearing of rolling mill and its control method for roll is cylindrical roller bearing in the harsh metal can occur in all occasions, mostly happens in large type bearing grease lubrication, and in the performance degradation occurred more often in grease base oil, 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, if necessary, can choose the TIMKEN bearings, or decrease the bearing radial clearance, the use of high performance grease and improve the rigidity and cylindrical roller bearings are suitable parts.