A cutting unit (7, 7A, 7B; 207) for use in a shaving device for shaving hairs, said cutting unit comprising: - an external cutting member (11; 211) comprising a shaving surface, which is interrupted by an apertured structure for allowing hairs to pass; and - an internal cutting member (12; 212), which is drivable for rotative movement relative to the external cutting member about a rotation axis (10; 210) and along said apertured structure in the shaving surface of the external cutting member for cutting through hairs passing said apertured structure; and wherein: - the external cutting member and the internal cutting member have: - an interconnected condition, in which the external cutting member and the internal cutting member are mutually interconnected for operation of the cutting unit, and - a disconnected condition, in which the external cutting member and the internal cutting member are mutually disconnected for taking the internal cutting member out of the external cutting member for cleaning the cutting unit; - the external cutting member has a first central portion (21; 221) and the internal cutting member has a second central portion (22; 222), wherein in said interconnected condition said rotation axis is a centre line of the first central portion as well as of the second central portion; - in said interconnected condition a holding force prevents the external cutting member and the internal cutting member from moving apart into the disconnected condition; - said holding force is at least exerted by the first central portion upon the second central portion, and/or vice versa; and - said disconnected condition is obtainable from said interconnected condition by manually moving the external cutting member and the internal cutting member away from one another in a direction parallel to said rotation axis by means of a manual force action overcoming said holding force. - an external cutting member (11; 211) comprising a shaving surface, which is interrupted by an apertured structure for allowing hairs to pass; and - an internal cutting member (12; 212), which is drivable for rotative movement relative to the external cutting member about a rotation axis (10; 210) and along said apertured structure in the shaving surface of the external cutting member for cutting through hairs passing said apertured structure; - the external cutting member and the internal cutting member have: - an interconnected condition, in which the external cutting member and the internal cutting member are mutually interconnected for operation of the cutting unit, and - a disconnected condition, in which the external cutting member and the internal cutting member are mutually disconnected for taking the internal cutting member out of the external cutting member for cleaning the cutting unit; - the external cutting member has a first central portion (21; 221) and the internal cutting member has a second central portion (22; 222), wherein in said interconnected condition said rotation axis is a centre line of the first central portion as well as of the second central portion; - in said interconnected condition a holding force prevents the external cutting member and the internal cutting member from moving apart into the disconnected condition; - said holding force is at least exerted by the first central portion upon the second central portion, and/or vice versa; and - said disconnected condition is obtainable from said interconnected condition by manually moving the external cutting member and the internal cutting member away from one another in a direction parallel to said rotation axis by means of a manual force action overcoming said holding force.