ABB IRB 6790 3D model is available on CGTrader for $59. Original author: Polygate. Specs: 140271 polys, 142615 verts.
OBJ (OBJ, filesize: 2.96 MB), MAX (Autodesk 3ds Max, filesize: 35.7 MB), C4D (Cinema 4D, filesize: 1.82 MB), MA (Autodesk Maya, filesize: 3.6 MB), MEL (Maya Mel Script, filesize: 3.6 MB), 3DS (3D Studio, filesize: 405 KB), FBX (Autodesk FBX, filesize: 5.24 MB)