Listening to FAG bearings in operation

    It is increasingly important to check the condition of the running machine and prepare a thorough inspection plan, with FAG bearings as the focus of attention, as it is the most important rotating part of all machines, and condition monitoring is an important part of preventive maintenance. Early detection of FAG bearing damage to avoid equipment downtime during unplanned maintenance due to FAG bearing damage. Now let me introduce to you to listen to this method.
Listening:
    The use of hearing to identify irregular movements is a very common method, such as the use of an electronic stethoscope to detect abnormal noise of a part is used by experienced operators. If the FAG bearing is in good operating condition, it will emit a low humming sound. If it is a sharp hum, arpeggio and other irregular sounds, it usually indicates that the FAG bearing is in poor operating condition.
    Sharp squeaking noise can be caused by improper lubrication. Improper FAG bearing clearance can also cause metallic sound. The dents on the outer ring of the FAG bearing can cause vibration and cause a smooth and crisp sound. If the knocking damage caused by the installation is also caused by noise, the noise will vary with the speed of the FAG bearing. If there is intermittent noise, it means that the rolling parts may be damaged. This sound occurs when the damaged surface is crushed. If there are pollutants in the FAG bearing, it will often cause noise. Serious FAG bearing damage will not occur. Regular and huge noise.
    FAG bearing damage can be detected by hearing, but usually FAG bearings must be replaced immediately. Therefore, a better method, for example, using an electronic condition monitoring instrument, pre-ruptures the operation of the FAG bearing.
    Compared to the old method (using a wooden stick or screwdriver to the FAG bearing housing and the other end to the ear), the FAG bearing condition can be more accurately estimated using advanced instruments.

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How to extend the three principles of FAG bearing life

(1) Select FAG bearing model with high load capacity
FAG bearing selection should take into account the price of the bearing, or use FAG bearings with higher load capacity but more expensive, or use ordinary FAG bearings and try to extend their life. Use high-load FAG bearings, such as cylindrical roller bearings with convexity, spherical roller bearings with symmetrical rollers, reinforced tapered roller bearings and ball bearings, ball bearings modified with ball groove, or FAG bearings of the 70000CD series replace deep groove (single row centripetal) ball bearings. These high load capacity FAG bearings may have a higher fatigue life due to improved stress distribution or due to the larger number of rolling elements.
(2) Choose the right FAG bearing size
In order to properly size the FAG bearing, the working load, speed and operating temperature of the FAG bearing must be accurately calculated or actually checked. The load has the greatest impact on the life of the FAG bearing, so the load is the most difficult to measure, but it should be measured as accurately as possible. When the load measurement is difficult, the actual power consumption of the motor can be measured, and the power loss along the path is calculated according to the transmission route until the actual FAG bearing load is calculated. The calculated or measured load is too large, and the expected fatigue life of FAG bearings must be reduced to a greater extent and must be remedied. If the installation location allows, the FAG bearing of the larger size can be selected; if the radial size is limited, the wider FAG bearing should be selected if there is a wider FAG bearing; if the wider FAG bearing cannot be used, it can be changed. FAG bearings with high load carrying capacity.
(3) Choosing the right FAG bearing material
The choice of FAG bearing materials should also take into account its price, and when vacuum smelting or electroslag remelting steel has to be used, care must be taken to improve the lubrication conditions in order to double the expected fatigue life of FAG bearings. Of course, the cost of FAG bearings made from such high-quality steel is much more expensive than the FAG bearings with higher load capacity, but FAG bearings that are difficult to access and extremely difficult to assemble and disassemble in machines, or mines and tunnels. The FAG bearings used are often difficult to be used for maintenance, and sometimes must be considered.

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