SCREW CONVEYOR 219-5000 mm (Polygon mesh 3D model) is available on CGTrader for $30. Original author: rasari35-0cf8ce. Specs: 10 polys, 20 verts.
DWG (AutoCAD, filesize: 1.25 MB), SLDPRT (SolidWorks, filesize: 7.43 MB), X_T (Parasolid, filesize: 2.79 MB), OTHER (Other, filesize: 5.29 MB)