Eccentric screw pump

An eccentric screw pump comprising:

• an axially split stator made of an elastic material and extending along an axis;
• a rotor rotatable in the stator at least generally about the axis;
• a casing surrounding the stator at least in some regions and formed by at least two casing segments clampable radially against the stator, each casing segment having opposite ends each in turn having a clamping flange with a first clamping surface;
• respective clamping elements with second clamping surfaces displaceable axially against the first clamping surfaces of the clamping flanges, the first and second clamping surfaces being angled relative to the axis and to each other so as to press the casing segments radially against the stator on axial displacement of the clamping elements, the clamping flanges and the clamping elements are rings at least one of which has a multipart configuration and consists of an outer ring and an inner ring, the second clamping surfaces being on the inner rings;
• and
• respective actuators bearing on the outer rings for displacing the clamping elements axially against the respective clamping flanges and thereby pressing the first clamping surfaces against the second clamping surfaces.