| 摘要 |
PURPOSE:To easily manufacture a static pressure bearing, by forming a threaded groove, connecting its one end side with a static pressure pocket and the other end side with a supply device of pressure oil, on the peripheral surface of a bush. CONSTITUTION:A bush 1, oppositely providing a recess grooves static pressure pocket 1a in the internal peripheral surface, forms a threaded groove 1b with an equal number of threads to the static pressure pocket 1a in the peripheral surface further a recessed groove 1c along the peripheral direction. The threaded groove 1b is formed all with one end side connecting with the recessed groove 1c while the other end side respectively communicating with the static pocket 1a through a small hole 1d formed in a wall of the bush 1. And pressure oil, supplied through a plug 4 mounted to a hole 2b formed in a main unit 2, is introduced to the recessed groove 1c of the bush 1.
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