Long time use bearing lead to bearing noise, how to solve?

Bearing use after a period of time can produce noise, even mute bearing is inevitable, it is because what? We imported bearing in recycling, and shop maintenance personnel in your spare time to chat when talked about the nature of bearing noise. They said bearing in the process of using the generation of noise is very common, this is inevitable in bearing use problem. Then he used his bearing operation experience for many years to our share several noise reduction method. First: the bearing raceway sound and sound method to control the raceway ring raceway is bearing at the time of operation, bearing roller rolling on raceway and the sound, continuous features is slippery, the sound is all the rolling bearing will produce the basic sound. Some of the most common bearing noise is rolling way voice and other sound mixing. Race also have different, for example, the ball bearing raceway acoustic sound of raceway is irregular, she has to frequency above 1000 hz, and its main frequency and other bearing different is that it is not changes with speed, but its total sound pressure level is increased with the speeding up of the rotational speed. Some bearing raceway sound particularly big, the sound pressure level and its race viscosity range is, the smaller is the greater the viscosity of raceway sound; And some of the raceway small bearings, the raceway sound pressure level and viscosity is proportional, the greater the pressure level, that is, the more viscous loud. Raceway sound changes and the rigidity of the bearing has a relationship, and the stiffness of the bearing and the raceway of sound pressure level is, the rigidity of the bearing, the greater the raceway of the total sound pressure level will be lower. Also have relationship with radial clearance, radial clearance and the raceway of sound pressure level and the main frequency is inversely proportional, the smaller the radial clearance, the greater the sound pressure level and the main frequency. Looked at these, for sound control method is also a little clue, we can choose waviness small bearings, this will effectively reduce the noise, you should be careful in terms of use. Raceway of sound a big impact for the overall mechanical noise, raceway noise reduction can effectively reduce the mechanical noise.