The invention relates to an eccentric pump (1) comprising a frame (15), a pump shaft (3) which can be driven using a driving device (73) and is mounted to be rotatable about a main axis (16) that is stationary relative to the frame (15), an eccentric sleeve (17) which is mounted in an axially movable manner on a pump shaft section (23), an anti-rotation element (27) which is effective between the pump shaft section (23) and the eccentric sleeve (17), several pump elements (5) which are stationary relative to the frame (15) and are provided with displacement elements (6) that can be moved in a radial direction relative to the main axis (16), act upon a fluid contained in swept volumes (8) of the pump elements (5), and are moved against a fluid pressure by an external surface (18) of the eccentric sleeve (17), and at least one spring element (39) which acts upon the eccentric sleeve (17) in an axial direction. The pump shaft section (23) is designed as an inclined eccentric pin (24) that has an eccentric pin axis (25) which extends at an oblique angle (26) from the main axis (16). The eccentric sleeve (17) that is guided on the eccentric pin (24) has a cylindrical external surface (18), the generatrices (20) of which extend parallel to the main axis (16).