Check out ABB IRB 120 3D model on CGTrader for $59. High-quality mesh by Polygate: 45096 polys, 47171 vertices. Textured, UV Mapped.
OBJ (OBJ, filesize: 860 KB), MAX (Autodesk 3ds Max, filesize: 26.8 MB), 3DS (3D Studio, filesize: 600 KB), C4D (Cinema 4D, filesize: 530 KB), MA (Autodesk Maya, filesize: 1.2 MB), MEL (Maya Mel Script, filesize: 1.2 MB), FBX (Autodesk FBX, filesize: 1.79 MB)