The causes of SKF self-aligning ball bearing noise preventive maintenance

Of SKF bearing equipment preventive maintenance, operation and peripheral parts changing the self-aligning ball bearing is removed when checking, suspension discriminant times demand, in turn, can bearing parts can be used again and record the condition of using good from bad. In order to find out and query to visit the amount of residual lubricant, sampling, to clean the bearing well. 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 SKF 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 self-aligning ball 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 is imported SKF bearing 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 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 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 because of the diameter of axle and SKF bearing hole size 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 self-aligning ball bearing, fever, wear or jammed, caused serious bearing inner and outer race in cracking during installation.