Check out Crawler Excavator Generic 07 3D model on CGTrader for $139. High-quality Subdivision ready mesh by Polygate: 1008532 polys, 1042015 vertices.
OBJ (OBJ, filesize: 126 MB), TEXTURES (Textures, filesize: 21.1 KB), MEL (Maya Mel Script, filesize: 21.1 KB), MA (Autodesk Maya, filesize: 128 MB), FBX (Autodesk FBX, filesize: 45.4 MB), C4D (Cinema 4D, filesize: 93.7 MB), BLEND (Blender, filesize: 148 MB), MAX (Autodesk 3ds Max, filesize: 493 MB), 3DS (3D Studio, filesize: 10.3 MB)