Spraying system comprising - at least two spraying devices for applying spraying material to items to be coated, wherein the spraying device has - a bearing surface for mounting on a quick change adapter, - a housing and a spray head, wherein the bearing surface is provided on the housing, and - at least one fastening element that has a longitudinal axis L B and protrudes relative to the bearing surface, and - wherein second means are provided for automatic, detachable fastening to a quick change adapter, wherein said second means comprise the fastening element, and the fastening element has at least one clamping and locking means which is designed such that, when the spraying device is assembled, at least one movable locking element of the quick change adapter exerts, by movement in the direction of the longitudinal axis thereof, a force on the fastening element, which force is directed away from the bearing surface in the direction of the longitudinal axis L B of the fastening element, - quick change adapters associated with the spray devices, wherein each quick change adapter has a first mounting surface for detachable arrangement on a robotic arm and a second mounting surface for arranging a spraying device, wherein the quick change adapter has first means and the spraying device has second means for automatically detachably fastening the spraying device to the quick change adapter, wherein the first means of the quick change adapter for the automatic, detachable fastening comprise a locking apparatus that can be pneumatically, hydraulically or electrically actuated and - a storage and changeover device which holds at least two spraying devices. - at least two spraying devices for applying spraying material to items to be coated, wherein the spraying device has - a bearing surface for mounting on a quick change adapter, - a housing and a spray head, wherein the bearing surface is provided on the housing, and - at least one fastening element that has a longitudinal axis L B and protrudes relative to the bearing surface, and - wherein second means are provided for automatic, detachable fastening to a quick change adapter, wherein said second means comprise the fastening element, and the fastening element has at least one clamping and locking means which is designed such that, when the spraying device is assembled, at least one movable locking element of the quick change adapter exerts, by movement in the direction of the longitudinal axis thereof, a force on the fastening element, which force is directed away from the bearing surface in the direction of the longitudinal axis L B of the fastening element, - a bearing surface for mounting on a quick change adapter, - a housing and a spray head, wherein the bearing surface is provided on the housing, and - at least one fastening element that has a longitudinal axis L B and protrudes relative to the bearing surface, and - wherein second means are provided for automatic, detachable fastening to a quick change adapter, wherein said second means comprise the fastening element, and the fastening element has at least one clamping and locking means which is designed such that, when the spraying device is assembled, at least one movable locking element of the quick change adapter exerts, by movement in the direction of the longitudinal axis thereof, a force on the fastening element, which force is directed away from the bearing surface in the direction of the longitudinal axis L B of the fastening element, - quick change adapters associated with the spray devices, wherein each quick change adapter has a first mounting surface for detachable arrangement on a robotic arm and a second mounting surface for arranging a spraying device, wherein the quick change adapter has first means and the spraying device has second means for automatically detachably fastening the spraying device to the quick change adapter, wherein the first means of the quick change adapter for the automatic, detachable fastening comprise a locking apparatus that can be pneumatically, hydraulically or electrically actuated and - a storage and changeover device which holds at least two spraying devices.