First of its kind in China – fully dynamic pressure air bearing

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Recently, our country has achieved an industrial breakthrough in the field of \"air bearings\" that is described by the industry as a \"world first\" – the fully dynamic pressure air bearing. It wasn’t just invented recently; it had been under foreign monopoly and banned from sale for a long time. It took us 25 years to fully establish the entire industrial chain of \"design–material–process–mass production\", thereby achieving self-sufficiency and control. The industrialization of fully active pressure air bearings has enabled China to truly take control of the \"rotating core\" components in its high-end equipment for the first time, and industries such as semiconductors, aviation, hydrogen energy, and precision machine tools will all benefit from this development. Why is this considered a disruptive technology? Because it can do things that traditional bearings cannot do at present. The working principle of the all-thrust aerodynamic bearing relies on gas lubrication technology, eliminating any physical contact between the bearing journal and the bearing shell. Instead, power is transmitted through a pressure air film formed between extremely small gaps of no more than 0.015 millimeters. In simple terms, air is used to replace the balls, gears, lubricating oil, and so on that were once found in bearings. Therefore, it features zero contact, no wear, high precision, and so on. For example, in bearing products, there is a very important parameter, which is the rotational speed of the bearing. Since the pressure air film in a fully active aerodynamic bearing is formed by high-speed rotation, its characteristic is that the higher the rotational speed, the more stable the stiffness and load-bearing capacity of the air film. Its maximum rotation speed can reach an astonishing 1.3 million revolutions per minute. The highest rotational speed record for traditional bearings is 221,000 revolutions per minute. This will significantly solve the industrial challenges that require ultra-high-speed bearings. At the same time, a fully dynamic pressure air bearing does not require external air; it can generate an air film as long as it starts rotating on its own. Therefore, it is also known as a self-lubricating bearing, eliminating the need for even routine maintenance. Another very important parameter for bearings is the stability and precision of motion. In a fully dynamic pressure air bearing, the air film acts to compensate for errors; in simple terms, the air helps to balance the pressure automatically, thereby correcting any deviations in the bearing’s rotation. It essentially has error compensation capabilities built in. And this is something that traditional bearings do not have. Therefore, it can be used in fields requiring ultra-high precision machining. Machines that use it for power transmission and control will achieve an even higher level of machining precision. Another significant advantage of the full-thrust aerodynamic bearing is its slow rate of temperature rise during operation. In traditional bearings, the temperature rises by about 40-80 degrees for every increase of 50,000 revolutions. With air bearings, the temperature rises by only 20-30 degrees for every 50,000 revolutions.