| 摘要 |
PROBLEM TO BE SOLVED: To provide a mass-producible, inexpensive static pressure gas bearing. SOLUTION: This static pressure gas bearing is equipped with: a resin bearing member 2 in which a cylindrical through hole 2a is extendingly formed in the axial direction, having a plurality of air blowout ports 2c on the inner face of the through hole 2a, and an air supply groove 2c on the outer face of the through hole 2a communicating with the air blowout ports 2b; and a base body 3 bonded to the resin bearing member 2 to cover the air supply groove 2c and having an air supply port 3b on the outer face thereof for communicating with the air supply groove 2c. The resin bearing member 2 is formed by injection molding, and the structure of the base body 3 is simple, such that the static pressure gas bearing 1 can be assembled just by bonding the base body 3 to cover the resin bearing member 2. An air supply groove 3d may be provided on the side of the base body 3. In the case the resin bearing member 2 and the base body 3 are cylindrical, the resin bearing member 2 is preferably inserted inside the base body 3 by temporarily decreasing the outer diameter of the resin bearing member 2 or temporarily increasing the inner diameter of the base body 3 so that the resin bearing member 2 has a larger outer diameter than the inner diameter of the base body 3. COPYRIGHT: (C)2008,JPO&INPIT
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