(1) the import bearings rolling way voice and its control method

Roll say is when NSK bearing operation, its rolling on the way in body sends out one kind of gliding continuous voice, is rolling bearings can happen all the basic characteristic of sound. The general is rolling bearing sound is way voice and other sound. The ball bearings rolling say is irregular, frequency in 1000 Hz above, its main frequency not with engine speed and change, but its total pressure level with the speeding up of the speed increases. Roll say large bearings, and its groove of sound pressure level with viscosity decreased; And roll say small bearings, and its pressure level in viscosity increases to about 20 was/s above, by reducing and to increase somewhat. The greater the rigidity of the bearing, roll say the total pressure level is lower. Such as radial clearance is too small, roll say the total pressure level and the main frequency will be as radial clearance decreased sharply increase. Roll control the way voice method: choose low noise bearing is very small NACHI striation bearing, deliberate choice use conditions. Roll say often affect the entire machine noise, reducing groove sound can reduce the noise of the machinery.

(2) the impact of the roller sound and its control method

Larger type of ball bearings or FAG cylindrical roller bearing in pure radial load under a low speed, because of the roller centrifugal force is small, the load in the rolling body will impact maintains a or groove and making noise. But with the speed increase, the noise will disappear. The impact of roller sound control method are: reduced radial clearance, use a reasonable structure and material of the sex and maintains a INA bearing.

(3) the rolling bearings rolling sound and its control method

Rolling cylindrical roller bearing SKF sound is in all cases it could have happened to harsh metal friction sound, occurs mostly in the larger type bearing grease lubrication, and in the performance degradation of oil complexes are more likely to happen, in oil lubrication almost does not occur. In addition, in winter are easy to occur, when subject to pure radial load, in radial clearance great occasion easy to occur, and with the different size, in a particular speed range easy to happen, not only will continuously happen and will appear intermittently. Foreign circle groove adopt the special processing method can prevent the emergence of rolling sound and, when necessary, can choose the KOYO bearing, or reduced bearing radial clearance, use the good performance of grease and improve and bearing match the rigid parts.

 



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