Full complement cylindrical roller bearings without outer ring are designed to withstand heavy loads

(1) Selection of cylindrical roller bearing models with high load capacity When selecting cylindrical roller bearings, the price of the bearing should be considered, or a cylindrical roller bearing with a higher load capacity but more expensive, or a common cylindrical roller bearing should be used. Also try to extend its lifespan. Cylindrical roller bearings with high load capacity, such as cylindrical roller bearings with crown, spherical roller bearings with symmetrical rollers, reinforced tapered roller bearings and ball bearings, ball bearings with modified ball groove generatrix, Or replace deep groove (single row radial) ball bearings with cylindrical roller bearings. These cylindrical roller bearings with high load capacity may have higher fatigue life due to improved stress distribution or due to the large number of rolling elements . (2) Selection of the appropriate cylindrical roller bearing size To select the appropriate cylindrical roller bearing size, the working load, rotational speed and operating temperature of the cylindrical roller bearing must be calculated or actually checked. The load has the greatest impact on the life of cylindrical roller bearings, so although the load is difficult to measure, 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 way can be calculated and deducted according to the transmission route, until the actual cylindrical roller bearing load is calculated. If the calculated or measured load is too large, the expected fatigue life of the cylindrical roller bearing must be reduced by a larger margin, and must be remedied. If the installation site allows, choose a cylindrical roller bearing with a larger size; if the radial size is limited, a wider cylindrical roller bearing should be selected in the case of a wider cylindrical roller bearing; if the wider cylindrical roller bearing cannot be used Cylindrical roller bearings with higher load carrying capacity can be used instead. (3) Selection of suitable cylindrical roller bearing materials The selection of cylindrical roller bearing materials should also take into account its price, and when vacuum smelting or electroslag remelting steel has to be used, attention must be paid to perfect lubrication conditions in order to achieve Double the expected fatigue life of cylindrical roller bearings. Of course, the cost of choosing a cylindrical roller bearing made of such high-quality steel is much more expensive than choosing a cylindrical roller bearing with a higher load capacity, but for a cylindrical roller bearing that is difficult to access and extremely difficult to assemble and disassemble in the machine, or Cylindrical roller bearings used for operating machinery in mines and tunnels must sometimes be considered when maintenance is extremely difficult.

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