FAG rolling mill bearing noise causes of preventive maintenance

Of rolling mill bearing equipment preventive maintenance, operation and peripheral parts was removed when changing FAG bearing aborted checking, discriminant times demand, in turn, the condition of bearing parts can use again and record using the good from the bad. 一个。 Inner and outer ring, rolling body, confrontation and hear any crack and present pieces. b。 In the inner and outer ring, rolling body any a divestiture. c。 Raceway surface, guard, significant injury of roller. d。 Confrontation of badly worn or loose rivet fierce. e. Raceway surface, rust and roller has a scar. f。 Had a remarkable indentation rolling surface, rolling body and make a mark. g。 Inner ring diameter or outer diameter on the creep. h。 Hot color changing fierce. 我。 Sealed bearing grease sealing and dust cover breakage to serious. Control method of rolling body impact sound: decrease the radial clearance, materials for use with reasonable structure and flexibility of the bearing cage. Followed by the sound of rolling mill bearing raceway groove 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 FAG bearing characteristic of the basic sound. General bearing ring raceway is combined with other sounds. The rigidity of the bearing, the greater the raceway of sound pressure level is lower. Such as radial clearance is too small, the sound pressure level and the main frequency of the raceway sound can increase sharply with the decrease of radial clearance. Control of raceway acoustic methods are: using low noise bearing is bearing waviness is very small, that is, carefully select and use conditions. Race often affect the mechanical noise, reduce the raceway can reduce the mechanical noise. Finally the mill imported bearings of rolling mill rolling mill and its control method is cylindrical roller 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 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 to suit the bearing parts of rigidity. But sometimes due to the diameter of axle and the size of the rolling mill bearing hole measurement inaccuracy or cooperate with surface roughness, do not meet the standard requirements to cause excessive interference fit, the bearing race is being squeezed from a large, thus reduce the radial clearance of the bearing itself, difficult to rotate the FAG bearing, fever, wear or jammed, caused serious bearing inner and outer race in cracking during installation.