| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum pump reducing the size of a casing while securing heat radiation.SOLUTION: In the vacuum pump 1 having a rotor 27 and vanes 28 in the casing 31, the casing 31 includes a casing body 22 formed of a material having higher heat conductivity than that for each of the rotor 27 and the vanes 28, and a cylinder part 23 pressed into the casing body 22 where the rotor 27 and the vanes 28 have sliding motion. |
