Abstract: The drive motor (1) drives a machining tool (2) which can be fed forwardly by means of a feed motor (3). Both motors (1, 3) are supplied with pressure fluid by the same hydraulic pump (4). A quantitative divider valve (5) divides the oil flow coming from the hydraulic pump, a control valve (24) controlling the flow of pressure fluid in the forward feed motor in such a way that the power output at the forward feed motor falls with increasing resistance at the machining tool, thereby providing for output-regulated operation of the machining tool. In the same way as the forward feed movement, the feed movement in respect of depth of the machining tool can also be produced by way of a depth feed motor (7).

Abstract: A gut casing holding nozzle includes a rotating fill tube 1 with a gut casing holding element 4 on its end. This is surrounded by a conical section 5, which is mounted in a mounting 8. Between the conical section 5 and the gut casing holding element 4 there is an annular slot for the gut casing to pass through. The conical section 5 is attached to the mounting 8 with radial and axial play, with the mounting 8 able to rotate. Two anchoring pins 13 attached to the mounting 8 are inserted into cavities 14 in the conical section 5, so as to cause that piece to rotate along with the mounting. In so doing automatic centering of the conical section 5 as compared to the fill tube 1 is guaranteed. Even out-of-round conditions in the fill tube or variations in gut casing wall thicknesses are compensated for automatically. The gut casing holding device is suited for high speed work conditions.