Heavy duty device to facilitate the handling of supply trolleys. The device simplifies the replacement of empty supply trolleys with full ones. The warehouseman loads the full supply trolley without interrupting the assembly process using the telescopic arms of the rotary table and, by turning the entire device 180 degrees, replaces the loaded trolley with an empty one without slowing down the work of the assembly line operator. He then removes the empty supply trolley without disrupting the assembly process. The device is pneumatic without the need for electricity. Meets all safety standards. It significantly speeded up and simplified the supply process and reduced the risk of injury as well as the supplying costs. The load capacity of the device is 550 kg.