Cause Analysis of Spherical Roller Bearing Operating Noise
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| Time：2016.11.05 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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Spherical roller bearing raceway sound and its control method Roller sound When the bearing is running, the rolling body rolling in the raceway surface of the rolling issue of continuous sound, all rolling bearings will occur unique to the basic sound. The general bearing sound is the roller sound plus other sounds. Ball bearing raceway sound is irregular, the frequency of 1000Hz or more, its main frequency does not change with the speed, but the total sound pressure level increases with the speed of acceleration. Roller sound of large NBI spherical roller bearings, the raceway sound pressure level with the increase of the viscosity decreased; and small roller bearings, the sound pressure level increased viscosity to about 20mm2 / s or more , By the decrease and increased. The greater the rigidity of the bearing, the lower the total sound pressure level of the raceway sound. If the radial clearance is too small, the total sound pressure level of the raceway sound and the main frequency will increase sharply as the radial clearance decreases. Control of the raceway sound methods are: selection of low noise NBI spherical roller bearings that waviness is very small bearings, carefully select the use of conditions. Track noise often affect the entire mechanical noise, reduce the noise can reduce the entire machinery of the noise.
The impact of the rolling sound and its control method larger models of ball bearings or cylindrical roller bearings in pure radial load low speed operation, the rolling body of the centrifugal force is small, in the non-load area of the rolling body will impact the cage Or raceway. But with the speed increase, the sound will disappear. The impact of the rolling body control methods are: appropriate to reduce the radial clearance, the use of reasonable structure and the flexibility of the material has a cage bearing.
Spherical Roller Bearings Rolling sound and its control Rolling sound is a cylindrical roller bearing in all occasions may occur in the ear-piercing metal friction sound, mostly in the grease lubrication of the larger model bearings, and in the base oil Performance deterioration of the grease is more likely to occur, almost no oil lubrication occurs. In addition, more prone to occur in the winter, when subjected to pure radial load, the radial clearance of large occasions prone to, and with the size of the model, in a particular speed range prone to both the continuous Will appear intermittently. The outer ring raceway to take a special method of processing can prevent the emergence of rolling sound, the need to choose this self-aligning roller bearings, or to reduce the spherical roller bearing radial clearance, the use of excellent performance grease and improve And aligning roller bearings match the rigidity of parts.
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