Centrifugal separator and rotor

A centrifugal separator for separation of at least two components of a fluid mixture which are of different densities, which centrifugal separator comprises:

• a rotor rotatable about an axis of rotation (R) and comprising a rotor wall which surrounds an inner space with a separating chamber within the rotor,
• an inlet for feeding the fluid mixture into the rotor's separating chamber,
• at least one outlet for discharging out from the rotor a component separated from the fluid mixture,
• a rotor shaft arranged to be connected to a hub on the rotor wall, the rotor being supported via the rotor shaft which is drivably connected to a motor (M) for rotation of the rotor about the axis of rotation (R);
• and
• the hub is situated outside the rotor's inner space and has for the rotor shaft a connection directed axially outwards from the rotor, with a fastening so arranged at the side of the rotor wall which faces away from the inner space as to be operable from the outside of the rotor in order to releasably connect the hub to the rotor shaft.