In Germany, there is a plunger called Hydrokomp, which has an internal thread and the model ase-016-08-03-001. This threaded plunger is ideal for avoiding vibration and deflection when machining workpieces need to be improved machining accuracy. Its threaded body variant design allows for both horizontal and vertical mounting into the fixture, enabling compact fixture designs even in space-constrained conditions. 
The hydraulic fixing of the plunger can be combined or separated from the hydraulic clamping of the workpiece, making the fixing even more flexible. There are two working support methods for the propulsion plunger: one is the basic plunger position that is withdrawn by advancing through the spring force; The second is hydraulic propulsion, and the basic plunger position is retracted. This design makes the plunger more stable in use, which can effectively prevent vibration and deflection of the workpiece. 
The advantage of this plunger is its compact clamp design, which can be mounted horizontally and vertically, making it possible to achieve efficient machining even in space-constrained conditions. In addition, the fixation of the plunger may be combined with clamping or separation, allowing for more flexibility in operation. Moreover, with the design of the protective metal wiper, the machining accuracy and efficiency can be further improved through the drilling channel ** pressure oil. 
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Hydrokomp plungers are available in standard plungers and special designs to meet different processing needs. It has a piston diameter of 16 mm, a piston stroke of 8 mm, a hydraulic drive and a working pressure of up to 500 bar. At a working pressure of 500 bar, the maximum support force is up to 12 kN. In addition, the threaded port is G1 4, which makes the connection more stable and reliable.