A device for marking a component, comprising - a laser device for generating a laser marking beam, - a support surface for providing the component to be marked, wherein the support surface is designed as a rotary table which can be rotated in a horizontal plane, and - a housing for enclosing a working area between the laser device and the component to be marked, characterised in that the housing is multi-part in design and comprises at least a first housing part and a second housing part, wherein the two housing parts (51, 52) are designed and arranged to be movable relative to one another, such that the housing in a loading position provides an open working area, through which the component to be marked can be introduced into the working area, and that the housing in a working position closes the working area in a laser beam-tight manner, wherein the support surface carrying the component to be marked is aligned in a horizontal plane, and that: the housing has at least a third housing part, wherein - the first housing part is fixed and closes off or encloses the working space at the top, - the second housing part is designed to be vertically displaceable between the working surface and the first housing part relative to the working surface and the first housing part and, in the working position, encloses a central part of the working area, and - the third housing part is arranged on the side of the support surface opposite the first and second housing parts (51, 52), wherein the second housing part has a first sealing means at least in sections on its end face facing the third housing part for sealing the two housing parts (52, 53) against each other in a laser beam-tight manner and the third housing part has a second sealing means corresponding at least in sections to the first sealing means on its end face facing the second housing part, and wherein the first housing part, which has a laser beam-tight viewing window, through which a worker can observe the component to be marked through the viewing window during the marking process, and the second housing part are arranged above the rotary table, and that the third housing part is arranged below the rotary table, wherein the third housing part is designed to be vertically displaceable in a direction away from the support surface. - a laser device for generating a laser marking beam, - a support surface for providing the component to be marked, wherein the support surface is designed as a rotary table which can be rotated in a horizontal plane, and - a housing for enclosing a working area between the laser device and the component to be marked, the housing has at least a third housing part, wherein - the first housing part is fixed and closes off or encloses the working space at the top, - the second housing part is designed to be vertically displaceable between the working surface and the first housing part relative to the working surface and the first housing part and, in the working position, encloses a central part of the working area, and - the third housing part is arranged on the side of the support surface opposite the first and second housing parts (51, 52), wherein the second housing part has a first sealing means at least in sections on its end face facing the third housing part for sealing the two housing parts (52, 53) against each other in a laser beam-tight manner and the third housing part has a second sealing means corresponding at least in sections to the first sealing means on its end face facing the second housing part, and wherein the first housing part, which has a laser beam-tight viewing window, through which a worker can observe the component to be marked through the viewing window during the marking process, and the second housing part are arranged above the rotary table, and that the third housing part is arranged below the rotary table, - the first housing part is fixed and closes off or encloses the working space at the top, - the second housing part is designed to be vertically displaceable between the working surface and the first housing part relative to the working surface and the first housing part and, in the working position, encloses a central part of the working area, and - the third housing part is arranged on the side of the support surface opposite the first and second housing parts (51, 52), wherein the second housing part has a first sealing means at least in sections on its end face facing the third housing part for sealing the two housing parts (52, 53) against each other in a laser beam-tight manner and the third housing part has a second sealing means corresponding at least in sections to the first sealing means on its end face facing the second housing part, and wherein the first housing part, which has a laser beam-tight viewing window, through which a worker can observe the component to be marked through the viewing window during the marking process, and the second housing part are arranged above the rotary table, and that the third housing part is arranged below the rotary table, wherein the third housing part is designed to be vertically displaceable in a direction away from the support surface.