▎ 摘　　要

NOVELTY - The bearing has an outer supporting body (1) whose end surface is provided with a concave containing space (12) and an air flow channel (14) that is connected with the containing space. The containing space is opened in the outer supporting body. A peripheral surface of the outer support body is formed with an air inlet (2) that is matched with the air flow channel. A porous medium (3) is installed in the containing space, which is made of porous graphene material. The outer supporting body is made of metal material. USE - Throttle air bearing e.g. plane type air bearing, shaft sleeve type air bearing or ball air bearing, for use as a bearing component for detecting or testing device, sub-micron coordinate measuring machine, air bearing rotary table, compact disk control device, high resolution imaging device, flat display device, inner and outer roller scanning drawing instrument, magnetic head and optical manufacturing device, lead bonding machine, crystal fixing machine, a solar photovoltaic printing mechanical device, imaging equipment, a turbine machinery, a linear platform, a medical device, a precise grinding and cutting device, a precise rotary scanning device, an encoder and a glass substrate conveying device, a precise metering instrument, a vision and optical detecting device, a liquid crystal panel detecting device, a microscope plane detecting device, a wafer probe detecting device, a magnetic head manufacturing machine tool, a magnetic memory and optical memory manufacturing device, a disk drive reading and writing head manufacturing machine tool, an optical grinding machine tool, a lens and diamond mirror surface turning machine tool, a diamond flying cutting machine tool, a recessive spectacle lens lathe, Automated optical inspection (AOI) machine vision device, a photosensitive bottom coating device, a grating reticle device and a memory repairing laser direct recording device (all claimed). ADVANTAGE - The porous can greatly improve the rigidity of the air bearing, bearing force and damping characteristic under the condition that the effective air supply area and the air supply pressure are not changed. The manufacturing difficulty of the air bearing is greatly simplified, which is good for reducing the cost, promoting the standardization of the bearing and improving the performance of the throttle air bearing. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an air bearing preparation method . DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a throttle air bearing Outer supporting body (1) Air inlet (2) Porous medium (3) Ball head clamping groove (11) Concave containing space (12) Drainage groove (13) Air flow channel (14)