Bearing industry portal net news: KOYO bearing is Japan in the bearing industry started the earliest, the largest KOYO bearing enterprises, so its products tend to be more attention by people, and the general users KOYO bearing, KOYO bearing noise is inevitable. Why KOYO bearing noise?
First of all, we want to know, KOYO bearing voice because its rolling on the surface of the raceway and rolling body, this is all the KOYO bearing some basic characteristics. Commonly used classification of bearing steel.And spherical KOYO bearing, spherical rolling momentum of irregular KOYO bearing, its main frequency does not change with speed, but its total sound pressure level increases with speed to speed up. Raceway big KOYO bearings, the rolling sound of sound pressure level decrease with the increase of the viscosity; The raceway small KOYO bearing, the sound pressure level in the viscosity increases to about 20 was/s above, from decreased to increase somewhat. KOYO 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 KOYO bearing waviness small KOYO bearing, carefully select and use conditions. Race often affect the mechanical noise, reduce the raceway can reduce the mechanical noise.
Second, the impact of the rolling element and its control method for larger models of ball KOYO bearings and cylindrical roller bearing KOYO 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, use with reasonable structure and material with kindliness KOYO bearing cage.
Finally, KOYO 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 the larger model KOYO 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, can choose this kind of KOYO bearing, when necessary or appropriate to reduce KOYO bearing radial clearance, the use of high performance grease and improve the rigidity as suitable as KOYO bearing parts.