Directional Spool Valve 4WEH16R7X/6EG24NTK4 - Bosch Rexroth R901089603

A manifold with the ISO 4401-07-07-0-05 hole pattern takes this pilot-operated size 16 directional spool valve. It routes up to 300 l/min to symbol R in three switching positions and works at a maximum operating pressure of 280 bar. The pilot stage switches on 24 VDC, pilot oil arrives from outside and leaves internally.

Advantages

• Three switching positions to symbol R across four ports
• Flow up to 300 l/min at a maximum operating pressure of 280 bar
• External pilot oil supply, internal pilot oil return
• Subplate mounting to ISO 4401-07-07-0-05, weight 9.86 kg
• Pilot stage driven by solenoids on 24 VDC, connector 3-pole (2 + PE) to EN 175301-803
• NBR seals for HL hydraulic fluid

Application

The valve sits in manifolds of presses, lifting gear and machine tools where larger cylinders run through three states. Symbol R sets the behaviour in the centre position and with it the state of the axis when the coils are de-energised. An external pilot supply keeps the pilot stage fed even while the main circuit is unloaded.

Manufacturer

Bosch Rexroth lists the item as material number R901089603 in the H-4W.H.. product family. Switching times, characteristic curves and installation dimensions are given in data sheet RE 24751.