TIMKEN bearing preventive maintenance and the methods of reducing noise

Of TIMKEN bearing equipment preventive maintenance, operation and peripheral parts change was removed when the suspension bearing checking, discriminant times demand, in turn, the condition of bearing parts can use again and record using the good from the 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。 Inner and outer ring, rolling body and anyone with a shed. 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. In the use of TIMKEN bearings, and sometimes we can hear the noise of the bearing, in fact, in theory, bearing is itself does not produce noise, and we heard a noise is bearing directly or indirectly with the surrounding structure to produce the vibration of the sound effect. So, why the bearing vibration? Today, I'll simple explanation for everyone, please careful reading! When loading the rolling element quantity change, can produce the vibration when a load to import bearing radial load, it the number of rolling element bearing load there will be some changes in the running, this caused the load in the direction of migration. The resulting vibration is inevitable, but, now of the bearing vibration and noise seems to be, is this why? Is because now the TIMKEN bearing adopted to preload on the design to reduce, loading in all rolling body, thereby reducing the vibration and also reduces the noise. Although used to preload, however, also cannot completely remove vibration and noise. So, how to further reduce the noise? 1, prevent excitation between components and the resonance components of vibration excitation. 2, changing the stiffness, and achieve the goal of change critical frequency. 3, remove the critical excitation vibration.