(rotary movements around two axes)
Tunnel pipes are lined with concrete using the spray method. On top of the telescopic boom there is a hydraulic manipulator that directs the concrete stream. The remote control allows for turning movements (resembling the movement of a hand), which ensure an even application of the concrete layer.
The manipulator consists of two mated piston-screw rotary motors, which together form a compact unit and can operate independently of each other. The compressed air supply for the second drive is carried out through internal channels. There is no need for mobile supply lines. The manipulator offers the following advantages:

• High turning torque with small footprint
• Compact design, insensitive to dirt
• Easy adjustment of turning torque and turning speed by adjusting operating pressure and flow volume
• No leaks due to the use of symmetrically rotating seals
• Stopping under load is possible in any position
• Increased operational safety thanks to flange-mounted shut-off valves

• Graphic illustration
• Specifications