Extruder screw handling device for extracting and/or inserting at least one extruder screw of a food or land-or-sea-animal-feed extruder , said device being suitable for fully extracting the extruder screw from a barrel of the extruder and/or for fully inserting the extruder screw into a barrel of the extruder , in which barrel the extruder screw rotates when the extruder is operating to extrude food or animal-feed product, wherein said device comprises: - a locking screw assembly that is configured so as to be securely and releasably attachable to an end section of the extruder screw ; and - actuating means for moving the locking screw assembly away from the extruder , whereby, when the device is in operation to extract the extruder screw , moving the extruder screw , when securely attached to the locking screw assembly , out of its extruder barrel ; - a horizontally-arranged top section , which is at least half as long as the extruder screw that is to be extracted; - a plurality of wheels ; - a support structure which supports the top section and which is supported on the ground by the plurality of wheels ; - a guiding element which is mounted on and towards one end of said top section , said guiding element having an opening through which the extruder screw can be moved during extraction; whereby the extruder screw handling device is further suitable: - for transporting the extruder screw after extraction from the extruder ; and - for enabling access to the extruder screw to carry out maintenance and/or cleaning tasks; characterized in that the device further comprises: - guide means which are mounted on the top section and which guide motion of the locking screw assembly , which is movably connected to said guide means , wherein the locking screw assembly comprises a central opening for secure and releasable attachment of the extruder screw , wherein the actuating means are mounted on an outer surface of the locking screw assembly - a locking screw assembly that is configured so as to be securely and releasably attachable to an end section of the extruder screw ; and - actuating means for moving the locking screw assembly away from the extruder , whereby, when the device is in operation to extract the extruder screw , moving the extruder screw , when securely attached to the locking screw assembly , out of its extruder barrel ; - a horizontally-arranged top section , which is at least half as long as the extruder screw that is to be extracted; - a plurality of wheels ; - a support structure which supports the top section and which is supported on the ground by the plurality of wheels ; - a guiding element which is mounted on and towards one end of said top section , said guiding element having an opening through which the extruder screw can be moved during extraction; whereby the extruder screw handling device is further suitable: - for transporting the extruder screw after extraction from the extruder ; and - for enabling access to the extruder screw to carry out maintenance and/or cleaning tasks; - for transporting the extruder screw after extraction from the extruder ; and - for enabling access to the extruder screw to carry out maintenance and/or cleaning tasks; characterized in that the device further comprises: - guide means which are mounted on the top section and which guide motion of the locking screw assembly , which is movably connected to said guide means , - guide means which are mounted on the top section and which guide motion of the locking screw assembly , which is movably connected to said guide means , wherein the locking screw assembly comprises a central opening for secure and releasable attachment of the extruder screw , wherein the actuating means are mounted on an outer surface of the locking screw assembly <EOS>