Check out Real Scale Hydraulic Crane Arm 3D Model for Industrial Use 3D model on CGTrader for $43. High-quality Polygon mesh mesh by aritraengineering.
STL (Stereolithography, filesize: 4.58 MB), OBJ (OBJ, filesize: 7.16 MB), 3MF (3D Manufacturing File, filesize: 680 KB), SLDPRT (SolidWorks, filesize: 7.54 MB), X_T (Parasolid, filesize: 1.12 MB), IGE (IGES, filesize: 6.68 MB), OTHER (Other, filesize: 3.23 MB)