| 摘要 |
The invention relates to an electric machine (2), comprising an external stator and an internal, rotationally mounted rotor which has a rotor core assembly (18) and a rotor shaft (4), said rotor shaft being connected to the rotor core assembly (18) in a rotationally fixed manner (4). The rotor has a hollow configuration and a cooling medium can pass through in the area between the rotor core assembly (18) and the rotor shaft (4).
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