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What is the working principle of the bearings

wallpapers Products 2020-07-29
Bearings play an important and irreplaceable role in mechanical design. They cover a wide range. It can be understood that without a bearings, a shaft is a simple iron rod. The following is a basic introduction to the working principle of the bearing. The rolling bearing developed on the basis of the bearing, its working principle is to replace sliding friction with rolling friction. It is generally composed of two ferrules, a set of rolling elements and a cage. It is highly versatile, standardized and serialized. Mechanical basic parts. As various machines have different working conditions, various requirements are put forward for rolling bearings in terms of load capacity, structure and performance. For this reason, rolling bearings need a variety of structures. However, the most basic structure is composed of inner ring, outer ring, rolling elements and cage-usually called the four major pieces.
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 mostly named according to the names of rolling elements. The functions of various parts in the bearing are as follows: For radial bearings, the inner ring usually fits tightly with the shaft and runs together with the shaft, and the outer ring usually forms a transitional fit with the bearing seat or mechanical housing hole to support it. However, in some cases, the outer ring is also running, the inner ring is fixed to support or both the inner ring and the outer ring are running at the same time.
For thrust bearings, the shaft ring that fits tightly with the shaft and moves together, and the seat ring that transitions to the bearing seat or mechanical housing hole and plays a supporting role. Rolling elements (steel balls, rollers or needles) in the bearing are usually evenly arranged between the two rings for rolling motion with the help of a cage. Its shape, size and quantity directly affect the load capacity and performance of the bearing. In addition to separating the rolling elements evenly, the cage can also guide the rotation of the rolling elements and improve the internal lubrication performance of the bearing.
There are many types of bearings, and their functions are also different, but the working principle is inseparable from the original one, which is roughly in summary.

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Tag: Bearings