| 摘要 |
PURPOSE: A base assembly is provided to prevent cleaning solution from flowing into a space formed by a base member and a rotor hub using a cleaning solution inflow preventing unit. CONSTITUTION: A rotor(120) includes a rotor hub(122) in which one or more disks are installed. A stator(140) rotatably supports the rotor. The stator is fixed in a base member(160). The base member and the rotor hub form an inner space. A cleaning solution inflow preventing unit(180) is included in one or more facing surfaces of the rotor hub facing the base member. |
