By Product Type

Switch unit type CR

Product description

Switch units combine the function of a directional seated valve with a pressure valve and check valve. They control dual stage pumps, a combination of high-pressure pump and low-pressure pump, in bottom and top ram presses. The low-pressure circuit and the high-pressure circuit are combined for rapid movement.

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
Technical data - Type CR - Directional seated valve
Size4 HDesignPortingWorking pressure (high pressure)400Working pressure (low pressure)60Flow rate (high pressure) (lpm)8Flow rate (low pressure) (lpm)80DocumentDownloadsConfiguratorConfigurator
Size4 MDesignPortingWorking pressure (high pressure)400Working pressure (low pressure)60Flow rate (high pressure) (lpm)8Flow rate (low pressure) (lpm)80DocumentDownloadsConfiguratorConfigurator
Size5 MDesignPortingWorking pressure (high pressure)400Working pressure (low pressure)60Flow rate (high pressure) (lpm)20Flow rate (low pressure) (lpm)160DocumentDownloadsConfiguratorConfigurator
SizeDesignWorking pressure (high pressure)Working pressure (low pressure)Flow rate (high pressure) (lpm)Flow rate (low pressure) (lpm)DocumentConfigurator4 HPorting40060880DownloadsConfigurator4 MPorting40060880DownloadsConfigurator5 MPorting4006020160DownloadsConfigurator