A solid-bowl screw-type centrifuge for clarifying substance uses a centrifuge drum that can hold the substance, and has a pond radius. A centrifuge screw is situated in the centrifuge drum. The centrifuge screw is supported on one of its axial end regions by a connecting flange that protrudes axially inward on a drum cover of the centrifuge drum and has a flange outside radius at a transition to the drum cover. The flange outside radius of the connecting flange is larger than the pond radius.