Check out Spiral Rotary Lifting Conveyor System 3D model on CGTrader for $46. High-quality mesh by machinexdesigns.
SLDPRT (SolidWorks, filesize: 17.6 MB), STL (Stereolithography, filesize: 10.7 MB), IGE (IGES, filesize: 4.2 MB), OTHER (Other, filesize: 5.68 MB), STP (STEP, filesize: 3.36 MB)