Bearings play a very critical role in machinery and equipment in various industries. Whether it is in mechanical design or in the daily operation of self-equipment, the bearing, a seemingly unimportant small component, is inseparable. Not only that, but the scope of bearings is quite extensive. We can understand that if there is no bearing, the shaft is just a simple iron rod.


1. The rolling bearing developed on the basis of bearing, its working principle is to replace sliding friction by rolling friction, usually composed of two ferrules, a set of rolling elements and a cage, which is relatively versatile, standardized and serialized The mechanical basic components that have reached a high level, because various machines have different working conditions, so various requirements are put forward for rolling bearings in terms of conformability, structure and performance. therefore. Rolling bearings require various structures. However, the most basic structures are usually the inner ring, outer ring, rolling elements and cage, which are usually called four parts.

2. For sealed bearings, add lubricant and sealing ring (or dust cover), also known as the six major parts. The names of various bearing types are basically named according to the names of the rolling elements.

The roles of various parts in the bearing are: for radial bearings, the inner ring usually needs to be tightly fitted with the shaft and run together with the shaft, and the outer ring usually forms a transition fit with the bearing seat or the hole of the mechanical housing to play a supporting role. . However, in some cases, there is an outer ring running, the inner ring is fixed to play a supporting role, or both the inner ring and the outer ring are running at the same time.

3. For the thrust bearing, the shaft ring that fits tightly with the shaft and moves together is called the shaft washer, and the seat ring that forms a transition fit with the bearing seat or the hole of the mechanical housing and plays a supporting role. The rolling elements (steel balls, rollers or needle rollers) are usually evenly arranged between the two rings through the cage for rolling motion in the bearing, and their shape, size and number will directly affect the load capacity and performance of the bearing influences. In addition to evenly separating the rolling elements, the cage can also guide the rolling elements to rotate and improve the lubrication performance inside the bearing.

There are various types of bearings, and different bearings also play a role, but when we look into their working principles, in fact, everything changes. I believe that through the above content, everyone has a certain understanding!

Post time: Jul-06-2022