Rotor for screw pumps and/or eccentric screw pumps and a screw pump or eccentric screw pump

摘要

The invention relates to a rotor (1) for screw pumps and eccentric screw pumps said rotor comprising a rotor head (2) for fixing to a drive and a rotor screw (3) wherein said rotor (1) having a total rotor length (LG). The rotor (1) consists of at least two rotor sections (I II). The first rotor section (I) comprising the rotor head (2) and a first sub section (5) of the rotor screw (3) and is made of a solid material and the at least one second rotor section (II) is designed as a hollow body with an inner hollow region (13).