The rolling sound of plastic bearing and its control method rolling sound is the harsh metal friction sound that may occur in IKO bearing on all occasions.
It mostly occurs in the larger type of grease lubricated bearing, but it is more likely to occur in the grease with degraded base oil performance, and it hardly occurs in oil lubrication.Solving measures and principles of IKO plastic bearing noise
Solving measures and principles of IKO plastic bearing noise
First of all, the impact sound of the rolling element and its control method. When the larger model ball bearing or cylindrical roller bearing operates at low speed under pure radial load, the rolling element in the non load area will impact the cage or raceway and make noise due to the small centrifugal force of the rolling element. But as the speed increases, the sound will disappear.Solving measures and principles of IKO plastic bearing noise
The second is the raceway sound of plastic bearing and its control method. The raceway sound is a smooth and continuous sound made by the rolling body rolling on the raceway surface when the shaft is running. It is a unique basic sound that will occur in all IKO bearings. Solving measures and principles of IKO plastic bearing noise
The general bearing sound is the sound of raceway plus other sounds. The speed of the bearing increases irregularly with the speed of the ball above 1000Hz, but its sound rate increases irregularly with the speed of the ball.Solving measures and principles of IKO plastic bearing noise
For plastic bearings with loud raceway sound, the sound pressure level of raceway sound decreases with the increase of viscosity; For bearings with low raceway noise, the sound pressure level changes from decrease to increase when the viscosity increases to more than 20mm2 / s.Solving measures and principles of IKO plastic bearing noise
The greater the rigidity of the bearing pedestal, the lower the sound pressure level of the raceway sound. If the radial clearance is too small, the sound pressure level and dominant frequency of the raceway sound will increase sharply with the reduction of the radial clearance. Solving measures and principles of IKO plastic bearing noise
If you don’t want it to have sound, the best way is to turn off the electricity. Ha ha, in fact, we can take some measures to greatly reduce the noise of the bearing.
Generally speaking, to control the noise impact of IKO bearing, we must take countermeasures against the root causes of these noises in order to get the permanent effect.Solving measures and principles of IKO plastic bearing noise
In addition, it is easy to occur in winter. When the plastic shaft bears pure radial load, it is easy to occur in the case of large radial clearance, and it is easy to occur in a specific speed range with different models and sizes, both continuously and intermittently. Solving measures and principles of IKO plastic bearing noise
The special processing method for the outer race raceway can prevent the occurrence of rolling sound. If necessary, this IKO bearing can be selected, or the radial clearance of the bearing can be appropriately reduced, the grease with excellent performance can be used and the rigidity of the parts matched with the bearing can be improved.Solving measures and principles of IKO plastic bearing noise
The clearance of SKF Bearing refers to the large amount of activity made by the other ring along the radial or axial direction when one ring is fixed, so the clearance is divided into radial clearance and axial clearance. When assembling the universal joint bearing, the clearance shall not be too large or too small. Solving measures and principles of IKO plastic bearing noise
Too large clearance will reduce the number of rolling elements bearing load at the same time and increase the load of a single rolling element, so as to reduce the rotation accuracy and service life of the bearing; Solving measures and principles of IKO plastic bearing noise
If the clearance is too small, the friction will increase, the heat generated will increase, and the wear will be intensified, which can also reduce the service life of the bearing. Therefore, the clearance of SKF Bearing should be strictly controlled and adjusted during assembly.Solving measures and principles of IKO plastic bearing noise
Preloading is to give an axial force to the inner or outer ring of SKF Bearing during assembly, so as to eliminate the bearing clearance and make the initial deformation at the contact between the rolling element and the inner and outer rings.
Preloading can improve the stiffness and rotation accuracy of the bearing in the working state. Most bearings with large load and high rotation accuracy requirements work in the state of no clearance or even a small amount of interference.Solving measures and principles of IKO plastic bearing noise
In this case, it is necessary to preload the universal joint bearing during assembly. The clearance adjustment and pre tightening are usually completed by making appropriate axial relative displacement of the inner ring to the outer ring.
It is not difficult to see from the above technological concepts that the bearing capacity and rotation accuracy of SKF Bearing can be improved and the service life of the bearing can be improved by adjusting the clearance of rolling bearing.
But at the same time, it will aggravate the bearing friction and increase the calorific value, so good lubrication and heat dissipation must be ensured when adjusting the clearance or preload. Improper adjustment or poor lubrication will in turn aggravate the wear of universal joint bearing and reduce its service life.