Bosch Rexroth | 4WEH16E7X6EW110N9EDALB10
4WEH16E7X/6EW110N9EDAL/B10
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The 4WEH16E7X/6EW110N9EDAL/B10 valve is manufactured by Bosch Rexroth and belongs to the WEH Directional Spool Valves series. Designed for hydraulic automation, it directs pressurized fluid by means of electro-hydraulic actuation, so an electrical signal on the pilot stage shifts the main spool without large solenoid forces. The valve size is NG16, and the body provides four ways so supply, return, and two actuator lines can be connected. Three spool positions allow extension, retraction, or blocking of the actuator, with the E spool symbol defining the internal flow paths for each state. A high-power 6E pilot valve delivers the force needed for rapid shifting. The porting pattern follows ISO 4401-07-07-0-05 to match standard sub-plates. A concealed N9 manual override lets service personnel move the spool mechanically during setup or power loss.
Ports p, a, and b withstand a maximum operating pressure of 280 bar, while port T is rated for 250 bar to protect the tank line. The pilot circuit accepts up to 250 bar and remains spring-centered as long as at least 14 bar is available, providing reliable return to neutral. Pilot oil is supplied internally from the pressure gallery, eliminating an extra feed line, and is returned externally through port Y so heat and contamination bypass the main return; this port endures 160 bar. A Ø 1.0 mm B10 throttle insert is installed to meter pilot flow and damp pressure spikes during shifting.
Technical Specifications
Actuation
Electro-Hydraulic
Manual Override
Concealed (N9)
Max Operating Pressure (p,a,b)
280 bar
Max Pressure Port T
250 bar
Maximum Pilot Pressure
250 bar
Minimum Pilot Pressure (spring-centered)
14 bar
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal
Pilot Return Port Y Max Pressure (ac)
160 bar
Pilot Valve
High-Power (6E)
Porting Pattern
ISO 4401-07-07-0-05
Spool Positions
3
Spool Symbol
E
Throttle Insert
Ø 1.0 mm (B10)
Valve Size
NG16
Ways
4
1620 Old Apex Road
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