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Analysis of the causes of bearing noise
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The rolling sound of the bearing and its control method is the unique sound of the rolling roller bearing when the bearing is working; its rolling body is rolled on the raceway surface; it is the unique fundamental sound that all rolling bearings will attack. Usually The bearing sound is the raceway sound plus other movements. The ball bearing's raceway sound is irregular; the frequency is above 1000Hz; its main frequency does not change with the speed; but its total sound pressure level is added with the acceleration of the speed. a bearing with a large rolling sound; the sound pressure level of the raceway sound is reduced with the addition of the viscosity, and the bearing with a small rolling sound; the sound pressure level increases when the viscosity is increased to about 20 mm 2 /s or more; Turned to increase. The rigidity of the bearing seat is larger; the lower the total sound pressure level of the raceway sound. For example, the radial clearance is too long. The é¾… 淖苌辜 淖苌辜 淖苌辜 淖苌辜 é«Œ é«Œ å‹Ÿ å‹Ÿ 募跎俣本ç¼é»¾. The method of manipulating the raceway sound is: use low-noise bearings, that is, bearings with small waviness; carefully select the operating conditions. The raceway sound often affects the noise of the whole machine; the reduction of the raceway sound can cut the whole Mechanical noise.
Condition 2:
The impact sound of the roll body and its control method. The larger type of ball bearing or cylindrical roller bearing works at low speed under pure radial load; because the centrifugal force of the roll body is more apologetic than the τ 汕 汕 汕 汕 岢寤鞅 岢寤鞅 3 The purpose of the blue 3. 鲈肷. But with the progress of the speed; this movement will not be seen. The control method of the roll impact sound is: properly reduce the radial clearance; use a reasonable layout and the information is ambiguous The bearing of the cage.
Situation three:
The rolling sound of the bearing and its control method are the sharp metal conflict sounds that cylindrical roller bearings may cause in all occasions; most of them occur in the larger type of grease-smooth bearing; and the smoothness of the base oil function is smooth. It is easier to attack in fat; 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; and it is different depending on the type; It is easy to attack in a certain speed range; it will be intermittent and intermittent. The special processing method for the outer ring raceway can avoid the appearance of rolling sound; if necessary, the bearing can be used; or the diameter of the bearing can be appropriately reduced. To the clearance; the use of excellent smooth grease and the rigidity of the bearing with the bearing.
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