SUU240/600 Internal/External/Rib face The KMT LIDKÖPING Grinding machines with high flexibility on a high-performance platform: - Internal: bore, groove & track grinding, - External: outer diameter, groove, track and rib face grinding. The SUU platform is the most versatile, user-friendly high-precision grinding platform available today. From one basic machine platform, only a few items need changing to designate it as an internal, external or flange grinder. that guarantee accuracy, output, life-cycle economy and safety.