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The bearing is a basic component in modern mechanical equipment and plays an important role in the process of the entire equipment operation. The selection of bearing structure and the correct installation, without exception, have a direct impact on the performance and service life of the entire machine.
Bearings can be divided into two categories according to the different structures: radial bearings and thrust bearings. Among them, radial bearings mainly include deep groove ball bearings, angular contact ball bearings, tapered roller bearings, cylindrical roller bearings, needle roller bearings, four-point contact ball bearings, self-aligning roller bearings, self-aligning ball bearings, thrust ball bearings, and double row angular contact ball bearings. And thrust bearings mainly include thrust cylindrical roller bearings, thrust tapered roller bearings, thrust spherical roller bearings and thrust needle roller bearings.
The radial bearing structure is simple, the transmission capacity is limited, can only bear radial force, and some can also bear small axial force. With the increasing trend of miniaturization, lightweight and high-speed performance, the radial bearing load has also increased. In order to meet the growing needs of the times, most radial bearings have adopted the new structure, material and manufacturing process. This can improve the load rating, increase the speed limit and reduce the overall size and weight of the bearing.
Thrust bearings are divided into two types: thrust cylindrical roller bearings and thrust tapered roller bearings, which can bear single-direction thrust force, and also bear some radial force. Thrust cylindrical roller bearings mainly rely on rolling elements to form sliding contact between the bearing components and the contact line, while thrust tapered roller bearings use tapered rollers, and their structure ensures both axial and radial load bearing capacity.
Installing bearing needs to consider the accuracy of installation and the special environment at the site, but some special bearings also need to be considered. Such as sealed bearings. Sealed bearings, as the name suggests, a rubber or plastic seal is added to the bearing gap. This not only prevents various external substances in the working environment from entering the bearing and polluting the lubricant in the bearing, but also improves the bearing performance and prolongs its service life.
In general, the structure of the bearing should be selected according to the performance of the equipment and the working environment. The correct selection of the bearing structure, without exception, has an effect on the performance and service life of the entire machine. Therefore, we must pay attention to the selection of bearing structure and properly install the bearing.
