Check out PBR Rubber Tyred Gantry Crane RTG V1 - Green Low-poly 3D model on CGTrader for $10. High-quality mesh by PBRCool: 28874 polys, 33273 vertices. PBR, Textured, UV Mapped.
MA (Autodesk Maya, filesize: 35.3 MB), OBJ (OBJ, filesize: 35.3 MB), FBX (Autodesk FBX, filesize: 35.3 MB), MAX (Autodesk 3ds Max, filesize: 35.3 MB), SPP (Substance Painter, filesize: 1.14 GB), 3DS (3D Studio, filesize: 35.3 MB), ABC (Alembic, filesize: 35.3 MB), DAE (Collada, filesize: 35.3 MB), TBSCENE (Marmoset Toolbag, filesize: 35.3 MB), UASSET (UnrealEngine, filesize: 35.3 MB), UNITYPACKAGE (Unity 3D, filesize: 35.3 MB), TEXTURES (Textures, filesize: 2.73 GB)