Bushing refers to the sleeve on the propeller shaft or stern shaft. The bearing is a component that fixes and reduces the friction coefficient of the load during the mechanical transmission process. The same thing as the shaft sleeve and the bearing is that both bear the load of the shaft.
Bearing sleeves are mainly used in machinery, printing and dyeing, papermaking, chemical industry, aerospace, coal, petroleum, automobile, construction machinery, metallurgy and other industries. It belongs to the category of sliding bearings. It is a bearing that works under sliding friction and rotates relative to the shaft. Generally, it needs to be assisted by a lubricating system.
The difference between the two is that the shaft sleeve is an integral structure, and the relative movement between the shaft and the shaft sleeve when rotating; while the bearing is a split type, and the inner and outer rings of the bearing itself move relative to each other when rotating. But in essence, the bushing is actually a kind of sliding bearing. The bearing bush is equivalent to the outer ring of the sliding bearing. The bushing is integral and moves relative to the shaft, while the bearing pad is segmented and rotates relative to the shaft.
What is the main function of the bearing sleeve?
1. Bearing sleeves are widely used in places where light loads are easy to disassemble and assemble. There are many bearings that will encounter difficulties in assembly and disassembly, especially in the case where the assembly of bearings is limited by conditions, the application of bearing sleeves can solve the assembly and disassembly problems.
2. The bearing sleeve can be adjusted to be tight and loose, so that the machining accuracy of many boxes can be relaxed, and the work efficiency of box machining can be greatly improved;
3. The installation of the bearing sleeve also overcomes the axial movement of the bearing. Therefore, the bearing sleeve is widely used, but there are also some shortcomings. The accuracy of the bearing sleeve directly affects the radial runout of the shaft.
4. The most important function of the bearing sleeve in the machine is to fix it. When the gear shaft moves, try not to let it shift in direction due to vibration. At this time, a copper sleeve is needed to help it fix.