Grease solves the noise problem of INA thrust ball bearings during operation

INA bearings generate noise during operation. There are two types of scar noise and dust noise. How to solve the noise generated by the thrust ball bearing during operation? Mainly to find the cause of noise, and then take different methods to reduce bearing noise according to different reasons. The causes and solutions for the noise generated by the following bearings during operation:
(1) Scar sound and its control method
If the rolling surface of the rolling bearing has cracks, indentations or rust, periodic vibrations and noises such as riveted rivets will occur, and the period may be fixed. Most of the rotations have a certain correspondence with the rotational speed, and the flaws will continuously occur on the channel. The flaws are hidden on the steel ball and the noise varies with installation and lubrication conditions.
The control method of this kind of noise is: the thrust ball bearing can not be knocked during installation, and the bearing is installed when the bearing is assembled with the shaft and then installed into the bearing seat to prevent the bearing from being inclined; the INA bearing is prevented from being rusted during storage and the shock vibration is prevented during transportation; High grease
(2) Dust sound and its control method
There are foreign substances such as dust in the rolling bearing, and non-periodic vibrations and so-called dust sounds occur, and the magnitude of vibration and noise is variable, and may or may not be.
The control method of dust sound is: improve the cleaning method of INA bearing. Before installation, the thrust ball bearing, shaft, seat hole and matching parts are all strictly clean and clean; remove foreign matter in the lubricant; improve the sealing of the bearing; avoid the use of materials. Plastic cage with pure or embedded foreign objects.
(3) Noise caused by lubrication factors and countermeasures
Mistakes in lubricant selection, insufficient lubricant, or aging induration can cause vibration and noise in thrust ball bearings, and this noise has no regularity. In this case, only use a suitable lubricant, adjust the amount of lubricant, extend the life of the lubricant and determine the replacement cycle.
Improper lubrication accounts for 36% of the causes of premature bearing failure. General purpose greases do not meet the needs of a wide variety of special INA bearing applications, using only one or all common greases for all thrust ball bearing applications. The problems caused will far outweigh the benefits of the unified brand. Bearing application conditions are very diverse, the correct lubrication is required to match the grease and bearing application conditions.
Bearing grease is the basis for smooth, worry-free operation and maximum reliability, even under the most extreme operating conditions. Grease prevents contaminants from entering the INA bearing, cushioning shock loads and preventing corrosion. Choosing the right grease in practical application is the basic condition for obtaining the maximum service life of thrust ball bearings.
The criteria for proper lubricant selection include the type and size of the thrust ball bearing, temperature, speed, load, and expected service life and relubrication cycle.

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Better maintenance of INA angular contact ball bearings

After the INA bearing is installed, check the operation in order to check if the installation is correct. The small machine can be rotated by hand to confirm whether the rotation is smooth. The inspection items have poor operation due to foreign matter, scratches, and indentations. The installation is poor, the torque generated by the mounting is not stable, and the torque is too large due to too small clearance, installation error, and sealing friction. Wait. If there is no abnormality, the power running can be started.
   The power running starts from the no-load low speed and slowly increases to the rated operation of the specified conditions. During the test run, the items are abnormal, the temperature of the angular contact ball bearing, the leakage or discoloration of the lubricant, and so on. If an abnormality is found, stop the operation immediately, check the machine, and remove the bearing check if necessary.
1. Keep the bearing lubricated clean
    Before inspecting the INA bearing, the surface of the bearing should be cleaned first, and then the oil seal of the bearing and its surrounding parts should be carefully inspected. If there are any bad symptoms, be sure to replace it. The bad oil seal will cause damage and make the angular contact ball. The bearing cloud is not normal and the equipment is shut down.
2. Pay attention to cover exposed bearings
    Do not expose the bearings to contaminants or moisture when inspecting the INA bearings. If the work is interrupted, the machine should be covered with a piece of oil-paper plastic or similar material. If the unshielded bearing is cleaned without performing disassembly and may be inspected, use a brush for application to clean with a petroleum solvent, then dry it with a lint-free cloth or blow it with compressed air (be careful not to let The bearing assembly starts to rotate). Check the track faces, retainers and beads of the bearing with a small mirror and a probe similar to that used by dentists. Do not clean the bearing with a sealing cover or dustproof; just wipe the outer surface. If the bearing is damaged, it needs to be replaced. The replacement of angular contact ball bearings during regular downtime maintenance is far more economical than the loss of sudden downtime selected due to damage to the array.
3. Check the lubricant of the bearing
Lubricants are important not only for bearings but also for all bearings. However, please note that it is not advisable to add too much grease to the bearings. Then it is to replace the lubricant of the INA bearing. An oil-lubricated angular contact ball bearing should be refilled with fresh oil and allowed to rotate at low speed for a few minutes if the old oil is drained. As much as possible, allow the oil to collect residual contaminants and then vent the oil. Bearings lubricated with grease should be replaced with any contact with the cotton material when the grease is replaced. Since these residual fibers may be wedged between the rolling elements and cause damage, in particular the application of the bearing needs to pay attention to this problem.
The life of INA bearings is closely related to the manufacture, assembly and use. It must be done at every stage in order to keep the non-standard bearings in optimal operation, thus extending the service life of angular contact ball bearings.

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