The invention relates to a vacuum pump, in particular a vane cell pump, comprising a rotor (7) that can be rotated about a rotational axis and by means of which, a vane (4) is guided inside in a peripheral contour (2) such that it can move back and forth in the radial direction, in relation to the rotor. The invention is characterised in that said vane (4) is coupled to an eccentric device (10) that is arranged in an eccentric manner in relation to the structural centre point (18) of the peripheral contour (2).