Carrier system for a stand device for arranging in the operating room and for displacing a medical device having a predefined mass, comprising - at least one carrier arm for holding a medical device with at least one strut (21, 23) supported in a respective pivot axis (17.1, 17.2), wherein the strut is additionally held by means of a lever to a support axis; and - at least one carrier arm joint device for the carrier arm of the stand device for arranging in the operating room and for displacing a medical device held on the carrier arm, wherein the carrier arm joint device is configured for setting a payload corresponding to a weight of the medical device to be taken up by the carrier arm, comprising: - at least one pivot axis (17.1, 17.2) for mounting at least one strut (21, 23) of the carrier arm, respectively; - a support axis to support a lever configured to transfer forces holding the carrier arm between the strut and the carrier arm joint device; wherein a distance (dz) between the axes is adjustable within an adjustment range (Vz) in order to set the payload; wherein the size and/or the extension of the adjustment range (Vz) is independent of the position of the pivot axis (17.1), and wherein the pivot axis (17.1) is partitioned in portions in a way that the relative position of the support axis in relation to the pivot axis (17.1) may be set independent of the position of the pivot axis (17.1) or the lever, in particular the axial distance (dz) may be minimized, wherein the pivot axis (17.1) is partitioned in at least two partitions, between which a cavity is formed, wherein the adjustment range (Vz) is arranged in the cavity, wherein the strut of the carrier arm is supported on at least one portion on the pivot axis (17.1) adjacent to the cavity defined by the carrier arm joint device in which the support axis is arranged and is arrangeable in different positions within the adjustment range (Vz), wherein the pivot axis (17.1) is spatially decoupled from the adjustment range, wherein the carrier arm is adapted as a parallelogram-like carrier arm, and wherein the carrier arm joint device defines two pivot axes (17.1, 17.2) for one of the struts (21, 23) of the carrier arm, respectively, wherein the support axis is arranged above both pivot axes and the axial distance between the support axis and an upper pivot axis may be minimized in order to set the minimum payload. - at least one carrier arm for holding a medical device with at least one strut (21, 23) supported in a respective pivot axis (17.1, 17.2), wherein the strut is additionally held by means of a lever to a support axis; and - at least one carrier arm joint device for the carrier arm of the stand device for arranging in the operating room and for displacing a medical device held on the carrier arm, wherein the carrier arm joint device is configured for setting a payload corresponding to a weight of the medical device to be taken up by the carrier arm, comprising: - at least one pivot axis (17.1, 17.2) for mounting at least one strut (21, 23) of the carrier arm, respectively; - a support axis to support a lever configured to transfer forces holding the carrier arm between the strut and the carrier arm joint device; - at least one pivot axis (17.1, 17.2) for mounting at least one strut (21, 23) of the carrier arm, respectively; - a support axis to support a lever configured to transfer forces holding the carrier arm between the strut and the carrier arm joint device;