The new pressure gas bearing belongs to the field of gas bearings. The bearing consists of a stepped shaft, a bearing, and left and right end caps. The working principle of the new pressure gas bearing is the same as that of a
dynamic pressure gas bearing under environmental conditions. It uses the
dynamic pressure effect of the pressurized gas in the large shaft clearance to carry radial load. This invention aims to solve two technical problems. First, it aims to substantially solve the world problem of "sealing the pressurized gas inside the bearing". By using a pressure-sealed container and assembling twice, the pressurized gas can be sealed inside the bearing. Second, it aims to completely solve the hidden danger of the gas bearing
seizing the shaft. For this purpose, two measures are adopted: 1. The outer clearances (2) and (17) of the small shafts on both sides of the stepped shaft are absolutely unequal. 2. Improve the
hardness of the
bearing surface at high temperature, or spray a layer of hard material on the
bearing surface. This invention returns the
air compressor that was required for the operation of the pressure gas bearing from the West to the Western world. It does not require a
throttle, and the bearing performance is better than that of the
air compressor. The new pressure gas bearing is widely used in inertial navigation gyroscopes, precision
machine tool spindles, high-speed power head bearings: boring heads, milling heads, high-speed magnetic heads of electronic computers, etc.