Medieval Treadwheel Crane Low-poly 3D model is available on CGTrader for $16. Original author: SimonTGriffiths. Specs: 5300 polys, 2700 verts.
STL (Stereolithography, filesize: 259 KB), OBJ (OBJ, filesize: 559 KB), SPP (Substance Painter, filesize: 197 MB), 3DS (3D Studio, filesize: 143 KB), BLEND (Blender, filesize: 900 KB), ABC (Alembic, filesize: 284 KB), FBX (Autodesk FBX, filesize: 269 KB), DAE (Collada, filesize: 622 KB), GLTF (glTF, filesize: 30.6 MB), PLY (Ply, filesize: 624 KB), TEXTURES (Textures, filesize: 30.3 MB)