What are the advantages of roller wheel bearing?

The bearing is to support or support the shaft. It can guide the rotation of the shaft and can also bear the pressure on the shaft. Bearings can be divided into roller wheel bearings and sliding bearings. In general, the bearings refer to roller wheel bearings. A rolling mechanical bearing (ball, roller or needle) turns the sliding friction between the running shaft and the shaft seat into rolling friction, thereby reducing friction loss. It is a precision mechanical element called roller wheel bearing.
The most basic structure of roller wheel bearing is composed of inner ring, outer ring, rolling element and cage. The inner ring cooperates with the shaft and rotates together with the shaft; the outer ring cooperates with the bearing seat to play a supporting role; the rolling elements are evenly distributed between the inner ring and the outer ring to reduce friction; the cage distributes the rolling elements evenly To prevent the rolling body from falling off and guide the rolling body to rotate.

The roller wheel bearing developed on the basis of sliding bearings, 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 very versatile, standardized, and serialized. A high degree of mechanical basic parts.
Due to the different working conditions of various machines, various requirements are imposed on the roller wheel bearing in terms of load capacity, structure and performance.
For this, the roller wheel bearing needs to have various structures. However, the most basic structure is composed of inner ring, outer ring, rolling elements and cage.
According to the use of bearings
(1) Railway bearings (2) Automotive bearings (3) Machine tool bearings (4) Aeroengine bearings (5) Motor bearings

According to bearing characteristics
(1) High temperature bearings (2) Low temperature bearings (3) High speed bearings (4) Vacuum bearings (5) Antimagnetic bearings (6) Corrosion resistant bearings
Compared with sliding bearings, roller wheel bearings have the following advantages:
1. The friction coefficient of the roller wheel bearing is smaller than that of the sliding bearing, and the transmission efficiency is high. The friction coefficient of general sliding bearings is 0.08-0.12, while the friction coefficient of roller bearings is only 0.001-0.005;
2. The roller wheel bearing has been standardized, serialized, and generalized, suitable for mass production and supply, and is very convenient to use and maintain;
3. Roller wheel bearing is made of bearing steel and heat treated. Therefore, the roller bearing not only has high mechanical performance and long service life, but also can save the expensive nonferrous metal used for manufacturing the sliding bearing;

4. The internal clearance of the roller wheel bearing is very small, and the machining accuracy of each part is high. Therefore, the running accuracy is high. At the same time, the rigidity of the bearing can be increased by means of preloading, which is very important for precision machinery;
5. Some roller wheel bearings can bear both radial and axial loads. Therefore, the structure of the bearing support can be simplified;
6. Due to the high transmission efficiency of the roller wheel bearing, the calorific value is low. Therefore, the consumption of lubricating oil can be reduced, and lubrication maintenance is relatively easy;
7. The roller wheel bearing can be conveniently applied to uranium in any orientation in space.

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