<p>The processing unit has a rotary machining tool (12), a rotary tool drive (14) with a housing (16) and a swarf collection hood (18) for swarf falling in the tool area with a through opening (20) into which the tool drive protrudes at least partly. The rotary drive housing is at least partly in sliding contact with the swarf collection hood in the through opening area. An independent claim is also included for a processing machine.</p>
