What are the differences between high speed bearings and low speed bearings

Time：2021.02.25  Source：Roller Bearings Suppliers

Bearings are the most important part of modern industry, and their performance technology will directly affect the development of certain fields. In our daily lives, we will keep in touch with bearings (such as those required by automobiles, machinery and equipment) to make these equipment run better. As bearings are used in different fields, their classification will be different.

Overview of high-speed bearings and low-speed bearings

High and low-speed bearings are generally positioned at linear speed rather than rotational speed. The speed of high-speed bearings must reach the speed requirement of more than 60 meters per second, so small bearings maybe tens of thousands of revolutions, but they are not high-speed bearings, and super-large bearings are considered high-speed bearings with a few hundred revolutions per minute. The reason is the latter The line speed is large. Among sliding bearings, hydrostatic bearings, hydrodynamic bearings, aerostatic bearings, and gas-dynamic bearings are suitable for high-speed rotation. For more information about WSBC 7236B bearings, pls click here.

Low-speed rolling bearings are generally used, and high-speed sliding bearings are generally used. As the name suggests, there are balls in rolling bearings, spherical, cylindrical, and conical. The sliding bearing is generally a bush. High and low-speed bearings are difficult to distinguish by appearance, and common low-speed bearings are mostly and cheap, but there are many high-speed bearings used inside the machine.

High-speed bearings are generally used inside the machine with liquid-bearing oil for cooling and lubrication. If the bearings are not used in cars where there is little power for the high speed of the motor, high-speed bearings can also be lubricated with solid bearing oil for cooling. Generally, high-speed bearings are used in engine transmission differentials, and low-speed bearings are used in chassis such as axle shaft hub bearings.

Did you know that bearings also have high-speed and low-speed differences? So how to distinguish between high-speed bearings and low-speed bearings? What is the basis?

The basis for distinguishing high-speed bearings and low-speed bearings

Because of the different ways of use, the bearings can be divided into high-speed bearings and low-speed bearings. However, although they are said to be different, they are not simply based on how many revolutions they can rotate. Some low-speed bearings are calculated per minute. The speed can reach nearly tens of thousands of revolutions, but although some are called high-speed bearings, their speed is only a few hundred revolutions per minute. They are distinguished based on the linear speed of the bearing. The high-speed bearing is the high-speed bearing. A low-speed bearing is a low-speed bearing.

The difference in different types between high-speed bearings and low-speed bearings

Low-speed bearings generally use rolling bearings, high-speed general sliding bearings, that is, the place responsible for rotation in the bearing is different, low-speed bearings use circular, cylindrical, or even conical rotors. While high-speed bearings use bearing bushes. For more information about WSBC 7236B bearings, pls click here.

The difference in appearance between high-speed bearings and low-speed bearings

From the appearance, you will find that the surface of the high-speed bearing will look smoother. There will be no roughness or potholes on the surface like the low-speed bearing. The distance between the outer ring and the inner ring is very small. The accuracy is also relatively high; at low speed, the surface is relatively rough and the accuracy is lower.

The difference in materials used for high-speed bearings and low-speed bearings

There are also some differences in materials between high-speed bearings and low-speed bearings. High-speed bearings use some metallographic, relatively high-hardness steel, which can withstand relatively large pressures; while ordinary bearings are used if their speed is relatively low. Some ordinary materials do not need to bear too much pressure, so the hardness and durability of the materials are relatively reduced.

Whether it is low-speed or high-speed bearings, they are actually manufactured after a careful design by the designer and repeated inspections. Although its parts themselves are very small, their technological innovations and changes can often drive the development of an industry, and their role should not be underestimated. Therefore, if the equipment we use every day contains a bearing part, we must be careful not to damage the bearing, otherwise, it may cost a large amount of maintenance.

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