A device for pressing a double coupling onto a gear shaft of a double coupling gear, the gear shaft being arranged within a coupling case of a gear housing, consisting of: - several tension bolts (126, 126/1) that can be connected in a fixed manner to the coupling case, - a pressing device that is provided with an axially adjustable pressure bar and that can be brought into a pressure connection with the double coupling, - a support device which connects the tension bolts (126, 126/1) with the pressing device, - wherein the support device comprises a central reception element (2, 3, 4), in which the pressing device is received, - wherein the support device comprises several support arms (5, 6, 7) which can be meshed with respectively one of the tension bolts (126, 126/1), - wherein the support arms (5, 6, 7) are each arranged in a pivoting manner around a pivoting axis that extends parallel to the pressure bar of the pressing device on the reception element (2, 3, 4) for the concentric orientation of the pressing device with the pressure bar thereof with respect to the gear shaft, characterized in that the reception element (2, 3, 4) comprises a central threaded bush and that the pressure bar of the pressing device is configured as a pressure spindle and is received in an adjustable manner in a central inner thread of the the threaded bush, and that if the support arms (5, 6, 7) are oriented horizontally, the threaded bush comprises an upper receiving cylinder in the upper axial end portion thereof and a lower receiving cylinder in the lower axial end portion thereof, and that a bearing plate having a bearing bore is arranged on the upper receiving cylinder and that a supporting plate having a bearing bore is arranged on the lower receiving cylinder and that the threaded bush forms a radially enlarged bearing rim axially between the receiving cylinders (9, 10) thereof, on which bearing rim the bearing plate axially rests upon the top side and the supporting plates axially rest against the bottom side. - several tension bolts (126, 126/1) that can be connected in a fixed manner to the coupling case, - a pressing device that is provided with an axially adjustable pressure bar and that can be brought into a pressure connection with the double coupling, - a support device which connects the tension bolts (126, 126/1) with the pressing device, - wherein the support device comprises a central reception element (2, 3, 4), in which the pressing device is received, - wherein the support device comprises several support arms (5, 6, 7) which can be meshed with respectively one of the tension bolts (126, 126/1), - wherein the support arms (5, 6, 7) are each arranged in a pivoting manner around a pivoting axis that extends parallel to the pressure bar of the pressing device on the reception element (2, 3, 4) for the concentric orientation of the pressing device with the pressure bar thereof with respect to the gear shaft, characterized in that the reception element (2, 3, 4) comprises a central threaded bush and that the pressure bar of the pressing device is configured as a pressure spindle and is received in an adjustable manner in a central inner thread of the the threaded bush, and that if the support arms (5, 6, 7) are oriented horizontally, the threaded bush comprises an upper receiving cylinder in the upper axial end portion thereof and a lower receiving cylinder in the lower axial end portion thereof, and that a bearing plate having a bearing bore is arranged on the upper receiving cylinder and that a supporting plate having a bearing bore is arranged on the lower receiving cylinder and that the threaded bush forms a radially enlarged bearing rim axially between the receiving cylinders (9, 10) thereof, on which bearing rim the bearing plate axially rests upon the top side and the supporting plates axially rest against the bottom side.