Bearing, as we all know, as the main parts of the rotating body, its use role is inconceivable.There are many types of bearings. According to the different rotation modes, they can be divided into rolling bearings and sliding bearings, but I do not know whether you know air bearings. Air bearings also belong to the type of sliding bearings.

Air bearing refers to the bearing that supports the load by means of the pressure air film formed between the surface of the sliding pair of bearings. When working, the sliding pair surface is completely separated by the air film.Air bearing belongs to the fluid sliding bearing in the sliding bearing, the work is fluid lubrication, the lubrication medium is air.According to the formation mechanism of pressure air film, air bearings are mainly divided into two categories: air dynamic pressure bearings and air static pressure bearings.The pressure air film of the air dynamic pressure bearing is formed by bringing the air into the convergent area between the surfaces of the sliding pairs through the mutual motion of the sliding pairs. The air film is roughly wedge-shaped.Because the air dynamic pressure bearing does not need an external air source, it is also called "self-acting bearing".

The air bearing is a new kind of NSK bearing which uses the air elastic potential energy to support.The only lubricant used is air;Therefore, air bearing technology is ideal for work pieces, or working environments where no pollution must be required.Since the 1950s, the application of gas bearings has been more and more extensive, and has been widely and deeply studied.At present, gas bearings can be used in textile machinery, cable machinery, instrument machine tools, gyroscopes, high-speed centrifugal separators, dental drills, refrigerators with low temperature operation, hydrogen expanders and gas circulators with high temperature operation.