The SERCO TU machining units are designed for the repair and maintenance of virtually any component: Flanges, Grooves, Safety valves, Sealing surfaces, Hole surfaces, High pressure valves, Bolt extraction, Flat seats, Conical seats, Manholes, Diesel engine repairs, RTJ Grooves etc.The SERCO TU400 is perfectly suitable for machining operations that need to be done by a single operator in a confined space. While maintaining its precision of 0.01 mm, the TU400 is fitted with automatic or manual axial and radial feed movements. This feature, compared with the TU200, enables it to work with a regular autonomous movement. The TU400 can also be used with the RTJ system to perform conical machining functions. In to machine a maximum surface, the TU400 can be held on an outside surface using the FC FC745 chain clamp.