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Analysis of three conditions of INA bearing attack noise
Source: China Bearing Network Time: 2013-07-15
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Condition one:
INA bearing's rolling sound and its control method is the unique sound of all INA bearings when the INA bearing is working; its rolling body is rolled on the raceway surface and announced a slippery movement; The usual INA bearing sound is the rolling sound plus other movements. The ball INA bearing's rolling sound is irregular; the frequency is above 1000Hz; its main frequency does not change with the speed; but its total sound pressure level with the speed The INA bearing with large rolling track is added; the sound pressure level of the rolling track is reduced with the addition of viscosity, and the INA bearing with small rolling sound; the sound pressure level is increased to about 20mm2/s. The above time; from the reduction to the increase. The rigidity of the INA bearing seat is greater; the lower the total sound pressure level of the raceway sound. For example, the radial clearance is too long. The method of controlling the sound of the raceway is to use a low-noise INA bearing, that is, an INA bearing with a small waviness; carefully select the operating conditions. The raceway sound often affects the noise of the entire machine. Cutting the sound of the raceway can reduce the noise of the entire machine.
Condition 2:
The impact sound of the roll body and its control method. The larger type of ball INA bearing or cylindrical roller INA bearing works at low speed under pure radial load; because the centrifugal force of the roll body is more apologetic than the .τ apologize to the tomb鞅3 芑蚬龅 Indigo 3. 鲈肷. But as the speed of rotation progresses; this movement will disappear. The control methods for the roll impact sound are: properly reduce the radial clearance; use reasonable layout and the information is harmonious. INA bearing for the sex cage.
Situation three:
The rolling noise of INA bearing and its control method is the sharp metal conflict sound of cylindrical roller INA bearing in all occasions; most of them occur in the larger type of INA bearing with grease smoothness; Deteriorated smooth fat is more prone to attack; it does not occur when the oil is smooth. In addition; it is easy to attack in winter; when it receives pure radial load; it is easy to attack when the radial clearance is large; The same; it is easy to attack in a certain range of speed; it will be intermittent and intermittent. The special processing method of the outer ring raceway can avoid the appearance of rolling sound; if necessary, use this kind of INA bearing; or appropriate Cut the radial clearance of the INA bearing; use the excellent smooth grease and improve the rigidity of the INA bearing with the machine.
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