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The essential elements of KOYO's imported bearing attack noise
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(1) The rolling sound of KOYO imported bearings and its control method. The rolling track sound is when a KOYO imported bearing works; its rolling body rolls over the raceway surface and announces a kind of slippery movement; it is the occurrence of all rolling bearings. The unique fundamental sound. The usual bearing sound is the rolling sound plus other movements. The ball 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 The grade is added with the acceleration of the rotational speed. The bearing with large rolling sound; the sound pressure level of the raceway sound is reduced with the addition of viscosity, and the bearing with small rolling sound; the sound pressure level is increased to about 20 mm 2 / When s or more; from the reduction to the increase. The rigidity of the bearing seat is greater; the total sound pressure level of the raceway sound is lower. For example, the radial clearance is too long. The method of controlling the sound of the raceway is to use a low-noise bearing, that is, a bearing with a small waviness; carefully select the operating conditions. The raceway sound often affects the noise of the entire machine; The rolling sound can reduce the noise of the entire machine.
(2) Impact sound of rolling body and its control method Larger type of ball bearing or cylindrical roller bearing works under low speed under pure radial load; because the centrifugal force of the rolling body is apologetic to the 诜 汕 汕 汕 汕寤鞅3 芑蚬龅 Indigo 3. 鲈肷. But as the speed of rotation progresses; this movement will disappear. The control method of the roll impact sound is: properly reduce the radial clearance; use reasonable layout and the information has And the bearings of the sturdy cage.
(3) The rolling sound of KOYO imported bearings and its control method The rolling sound is the sharp metal conflict sound of cylindrical roller bearings that may occur in all occasions; most of them occur in the larger type of bearings with smooth grease; It is easier to attack in smooth fat with degraded oil function; 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; Different; 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, such a bearing can be used; or Properly reduce the radial clearance of the bearing; use the excellent smooth grease and improve the rigidity of the bearing with the bearing.
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