| 摘要 |
A screw rotor is for a screw type vacuum pump, preferably for a screw type vacuum pump having a pumping capacity less than 50 m3/h. The rotor has a rotor shaft, a rotor core which rests on the rotor shaft, and a rotor cover which rests on the rotor core and at least partially encloses the rotor core. The rotor core is made of a material having a thermal conductivity greater than 100 W/m·K, preferably a thermal conductivity greater than 200 W/m·K. A screw type vacuum pump has correspondingly designed rotors.
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