diameters for the safe lateral guidance of the bale 7 more preferably when travelling across the slope guide elements 28 rotatably mounted at the end of the rolling frame 24 within the support frame 4 whose positioning means which are not shown such as for example an hydraulic cylinder are connected with the control device 22 which on opening of the tail flap 8 brings about the swivelling of the guide elements 28 from the rest position 29 shown in dash dotted line into a working position 30 establishing the opening state of the tail flap 8 takes place by means of a sensor 35 provided on the tail flap 8 through the embodiment of the lateral guide elements 28 in a manner capable of swivelling a position directly below the tail flap 8 is made possible compared with rigid guide elements without having to fear a collision when the tail flap 8 is opened in addition it is conceivable that the guide elements 28 are directly arranged on the support frame 4 in a swivelling manner for sensing the opening state of the tail flap a sensor 31 operationally connected with the control device 22 is present on swivelling of the bale transfer device 26 by means of for example a hydraulic cylinder which is not shown here the front end of the bale transfer device 26 is lifted from the starting position a 1 in the direction of the arrow until the bale 7 through its own weight rolls into the catching trough of the wrapping table 18 as is now shown in more detail in fig2 the end position of the bale 7 on the wrapping table 18 embodied trough like is sensed by means of a touch sensor 32 arranged on the wrapping table.