Adjusting the axial clearance For the installation axial clearance of the full complement cylindrical roller bearing, the adjustment nut on the journal, the adjustment washer and the thread in the bearing seat hole can be used, or the preload spring can be used to adjust. The size of the axial clearance is related to the arrangement of the bearing during installation, the distance between the bearings, and the material of the shaft and the bearing seat, which can be determined according to the working conditions. For tapered roller bearings with high load and high speed, when adjusting the clearance, the influence of temperature rise on the axial clearance must be considered, and the clearance caused by the temperature rise must be estimated in a small amount, that is, the axial clearance The clearance should be appropriately adjusted to be larger. For bearings with low speed and vibration, they should be installed without clearance, or installed with preload. The purpose is to make the rollers and raceways of tapered roller bearings have good contact, distribute the load evenly, and prevent the rollers and raceways from being damaged by vibration and impact. After adjustment, check the axial clearance with a dial gauge. Full complement cylindrical roller bearings and thrust needle roller bearings are suitable for occasions with low rotational speed. Thrust tapered roller bearings rotate slightly. Flat thrust bearings mainly bear axial loads in the assembly and are widely used. Although the thrust bearing is installed with the operation wheel and the tapered roller bearing how to assemble the gear design, there should be an axial positioning step, the outer ring of the bearing is closed, and the outer side of the inner ring is locked with a lock nut. Set the locked position according to the application conditions. preload. The service life of the three types of bearings depends on proper lubrication during installation and use, but the cleaning of the three types of bearings before installation is also very important. The bearing is packaged, immersed in the above-mentioned gasoline and other liquids and rotates gently by hand. It is necessary to ensure that the cage, rolling elements and the sealing oil on the surface of the raceway are thoroughly cleaned. After cleaning, wear film gloves and dry the bearings on a clean cloth or paper on the workbench. Installation can then proceed. Bearing in mind that with sealed Class 3 bearings, the sealed interior should be left unclean. If it is found that there are bumps, burrs, rust spots or solid particles on the assembly surface of the shaft and the bearing seat hole, you can use an oil file to remove the burrs, raised bump marks, and rust spots, and polish with a fine emery cloth. Particles, dirt, etc.
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