Trencher Machine 3D model is available on CGTrader for $28. Original author: polygonworks1. Specs: 1502365 polys, 1502956 verts.
OBJ (OBJ, filesize: 190 MB), FBX (Autodesk FBX, filesize: 43.5 MB), JPG (JPG, filesize: 179 KB), C4D (Cinema 4D, filesize: 55.1 MB)