Electromagnetically operated brake/clutch installation

Um unabhängig von der Bauart des Vorrichtungsgehäuses eine exakte Axialverstellung des Bremsmagnetteils (6) und damit des Arbeitsluftspaltes (16) zu erzielen, sind zwischen der dem Ankerteil (7) abgelegenen Stirnseite des Bremsmagnetteils (6) und dem Gehäuse (1) zumindest zwei gegeneinander verdrehbare Nachstellringe (2,3) mit sich aufeinander abstützenden Axialkurven (5) angeordnet. 1. Electromagnetically actuated brake coupling device with a fixed housing (1), in which, of rotationally symmetrical design, a brake-magnet part (6) and a coupling-magnet part (14) are located opposite one another in the axial direction and an axially displaceable armature part (7) and a coupling rotor (11) are arranged coaxially between them, there being between the armature part (7) and the coupling rotor (11) or the fixed brake-magnet part (6) an air gap which is variable as a result of axial displacement of the brake-magnet (6), for which purpose there are arranged between the end face of the brake-magnet part (6) distant from the armature part (7) and the housing (1) adjustable supporting elements (2, 3) which, when adjusted, cause axial displacement of the brake-magnet part (6), characterized in that the supporting elements (2, 3) are at least two adjusting rings rotatable relative to one another, which are arranged coaxially relative to the brake-magnet part (6) and have axial cams (5) supported on one another, and of which one (2) is connected fixedly in terms of rotation to the housing (1) and the other (3) is rotatable coaxially relative to the brake-magnet part (6) and has an adjusting member (8) displaceable in a slot (9) in the housing (1).