If the low-pressure value is reached or exceeded, the switch unit type CR switches the low-pressure circuit to circulation. The high-pressure pump carries out the pressing action. The switch unit hydraulic release acts automatically. It initiates surge-free decompression that relieves the press. In the closed state the switch unit has zero leakage.
The switch unit type CR can be attached directly to hydraulic power packs type MPN and RZ.
Features and advantages
Special valve for controlling upstroke presses
Smooth, gentle switching
No pressure drop during press operation due to zero leakage
Fully automatic switching of the low-pressure pump to circulation
Intended applications
Machine tools (presses)
Woodworking and processing machinery
Printing and paper technology
Foodstuff and packaging machinery