In industrial society, bearings are an essential component. With bearings, people can transform one form of motion into another or reduce the friction between two contact surfaces. However, bearings are well-known. Most people may not know about bearing shells. Do you know what bearing shells are? What are the differences between it and bearings? Based on our understanding, what is a bearing shell? What is the difference between bearing shells and rolling bearings?

What is a bearing shell?
Bearing shell, also known as “sliding bearing”. For example, sliding bearings made of copper, lubricated by oil grooves on the friction surface of copper tiles, play a “supporting” role similar to ball bearings, reducing the friction force of the shaft.
What is the difference between bearing shells and rolling bearings?
Firstly, there are many types of bearings, and the bearing shell belongs to sliding bearings. This type of bearing is relatively stable and not easily damaged, making it more reliable.
Secondly, it doesn’t make much noise yet. After adding lubricating oil, there is a layer of medium oil between the two working surfaces, which can greatly reduce friction loss and surface wear.
In addition, the oil film has a certain ability to absorb vibrations, but the friction is a bit high when it is first started. In this type of bearing, the part supported by the shaft and bearing is called the journal, and the bearing shell is the part that matches the journal. Of course, this type of bearing is rare in general, only used in places where the speed is not very fast and the negative pressure is high.
Bearing shells are generally composed of inner and outer rings, rolling elements, and retaining frames. The innermost layer of inner ring is responsible for connecting with the main shaft and rotating together, while the outer ring is mainly used in conjunction with the bearing base, playing a certain load-bearing role. Rolling elements are shafts that roll between the inner and outer rings, and their shape, size, and quantity directly affect the lifespan of the bearing. As long as the bearing is evenly distributed, it can prevent the rolling elements from falling off and guide the lubrication of the rolling elements.
The difference between rolling bearings and sliding bearings is significant. Rolling bearings make contact with a point, while sliding bearings make contact with a surface. Additionally, their motion modes are different. The motion mode of sliding bearings is sliding.