Transfer device for the transfer of elongated, at least approximately hollow-cylindrical product units in the form of thin-walled tubes to a transport device for supplying a packaging unit with said product units arranged side by side without any gaps, the device comprising: a supply device, which conveys at a predetermined speed, for the supply of product units delivered from a production line, and a transport device with a conveyor belt that comprises a plurality of product receiving elements for the onward conveyance of the product units; wherein the supply device comprises an endless conveyor chain with a plurality of product receiving containers for receiving individual product units supplied from the production line; wherein the conveyor chain of the supply device and the conveyor belt of the transport device run in the same direction of conveyance (A, B) in a transfer region, gradually rising and parallel to each other at a distance; and wherein underneath the conveyor chain a product guidance is arranged, the one end of which extends all the way to the transfer region; wherein the transfer device comprises a transfer control unit, which is configured in such a manner that it adjusts the speed of the conveyor belt to a predetermined conveyance speed of the supply device so that a product unit to be transferred, after having been delivered at the end of the product guidance, lands precisely on the first free product receiving element in the direction of conveyance; characterized in that the transfer device comprises a suction device for producing a suction vacuum, wherein for the transfer of a product unit, which has been delivered by the supply device, to the conveyor belt several product receiving elements (6,..., 6''') that are located in the transfer region of the transfer device can be operated with the suction vacuum of the suction device so that the product unit to be transferred is held and stabilized in the transfer region in the product receiving element (6... 6''') by means of the suction vacuum both during landing and during onwards transfer, and in that the product reception elements of the conveyor belt each comprise a suction intake opening, which can in each case be operated with the suction vacuum of the suction device, and in that the conveyor belt comprises two spaced-apart endless belts to which the product receiving elements are attached, wherein the suction intake openings of the product receiving elements are arranged above the gap between the two endless belts. a supply device, which conveys at a predetermined speed, for the supply of product units delivered from a production line, and a transport device with a conveyor belt that comprises a plurality of product receiving elements for the onward conveyance of the product units; wherein the supply device comprises an endless conveyor chain with a plurality of product receiving containers for receiving individual product units supplied from the production line; wherein the conveyor chain of the supply device and the conveyor belt of the transport device run in the same direction of conveyance (A, B) in a transfer region, gradually rising and parallel to each other at a distance; and wherein underneath the conveyor chain a product guidance is arranged, the one end of which extends all the way to the transfer region; wherein the transfer device comprises a transfer control unit, which is configured in such a manner that it adjusts the speed of the conveyor belt to a predetermined conveyance speed of the supply device so that a product unit to be transferred, after having been delivered at the end of the product guidance, lands precisely on the first free product receiving element in the direction of conveyance; characterized in that the transfer device comprises a suction device for producing a suction vacuum, wherein for the transfer of a product unit, which has been delivered by the supply device, to the conveyor belt several product receiving elements (6,..., 6''') that are located in the transfer region of the transfer device can be operated with the suction vacuum of the suction device so that the product unit to be transferred is held and stabilized in the transfer region in the product receiving element (6... 6''') by means of the suction vacuum both during landing and during onwards transfer, and in that the product reception elements of the conveyor belt each comprise a suction intake opening, which can in each case be operated with the suction vacuum of the suction device, and in that the conveyor belt comprises two spaced-apart endless belts to which the product receiving elements are attached, wherein the suction intake openings of the product receiving elements are arranged above the gap between the two endless belts.