Device for remote-controlled, submarine machining unit

A device for a remote controlled, submarine machining unit arranged for machining of a surface on an installation element by rotation and axial displacement of a tool head and also displacement of one or more cutter holders relative to the tool head, the machining unit being provided with means for releasable mounting of the machining unit at or on the installation element, wherein

• the tool head is fastened in a rotor shaft axially displaceably supported in a frame and axially rigidly supported in a primary adjustment works enclosing an end portion of the rotor shaft;
• the primary adjustment works comprises one or more linear actuators provided with first transmission means arranged to be able to effect an axial displacement of a rotor bearing relative to the frame;
• and
• a secondary adjustment works is connected to the rotor shaft and comprises second transmission means arranged for transfer of a rotary movement of an adjustment handle projecting from the rotor shaft end portion to a displacement of the cutter holders