Directional Spool Valve 4WEH16HD7X/OF6EG24N9S2K4/B10 - Bosch Rexroth R900947450

When pilot control depends on the pressure in the main line, a machine switches unreliably during start-up. The pilot-operated spool valve 4WEH16HD7X/OF6EG24N9S2K4/B10 takes its pilot oil from an external source and returns it separately, so switching up to 300 l/min stays independent of the state of the main circuit.

Benefits

• External pilot oil supply and external pilot oil return, pilot control works independently of the pressure in P and of back pressure in the tank line.
• 300 l/min at size 16, mounting pattern ISO 4401-07-07-0-05 for subplate mounting.
• Maximum operating pressure 280 bar across four ports in two switching positions to symbol D.
• Solenoid actuation at 24 VDC through a 3-pole connector (2 + PE) according to EN 175301-803.
• NBR seals for HL hydraulic fluid, matched to mineral oil in the usual temperature window.
• 10.77 kg for pilot valve and main stage as one assembled unit.

Applications

The valve controls double-acting cylinders and hydraulic motors in presses, machine tools and test rigs once the flow becomes too large for a directly actuated design. Separate pilot oil routing pays off where several valves share one return line and back pressure in the tank line varies. The ISO 4401-07-07-0-05 pattern allows an exchange against other valves of the same size without reworking the manifold.

Manufacturer

Bosch Rexroth, material number R900947450, product family H-4W.H.. The technical basis is documented in the data sheet for pilot-operated directional spool valves (RE 24751) and in the overview RE 07600-B.