| 摘要 |
PROBLEM TO BE SOLVED: To improve a screw compressor for extremely large compression pressure, in a form that two rotors of a main rotor and a sub-rotor are arranged, wherein the main rotor has a driving shaft end part, both rotors are surrounded by a casing, the casing has an inlet port and an outlet port, a molding part of the rotors has shaft shoulders, the shaft shoulders are surrounded by a radial bearing, a thrust bearing is arranged, and the thrust bearing is arranged in a shaft end part on the delivery side. SOLUTION: The radial bearing and a support surface for surrounding the radial bearing are adjacent to a casing hole in a shape connecting type. A central point of the radial bearing and the support surface is arranged on the two parallel axes of the casing. COPYRIGHT: (C)2008,JPO&INPIT
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