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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