Bosch Rexroth | 4WEH10HD4X6EW110N9DAL
4WEH10HD4X/6EW110N9DAL
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The 4WEH10HD4X/6EW110N9DAL directional spool valve belongs to the WEH Directional Spool Valves series manufactured by Bosch Rexroth for hydraulic automation tasks that require reliable flow switching. It follows size NG10 and employs spool symbol D to define flow paths across its two switching positions. The main control spool is returned hydraulically, and a concealed N9 manual override permits local actuation when needed. Fast switching is achieved with a pilot flow of 35 l/min, while secure end positioning demands a minimum pilot pressure of 7 bar and remains safe up to 250 bar. These features support repeatable sequencing in circuits where protected override and rapid pilot response are essential.
Port P admits up to 160 l/min, with ports P, A, and B rated for 280 bar; port T carries the same 280 bar limit to tolerate high back-pressure. The valve mounts on a subplate that uses porting pattern ISO 4401-05-05-0-05 and is secured by M6 × 45 ISO 4762 screws tightened to 12.5 Nm. Hydraulic fluid cleanliness must not exceed class 20/18/15 per ISO 4406 to prevent spool sticking. The single-solenoid version weighs 6.4 kg, allowing straightforward handling during installation. Together, the flow capacity, pressure ratings, and mounting details make this pilot-operated valve suitable for presses, injection units, and similar equipment that need dependable two-position control under demanding pressure conditions.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Control Spool Return (main Valve)
Hydraulic
Manual Override
Concealed (N9)
Max Flow (2-spool, Ng10)
160 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Operating Pressure (port T)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (hydraulic End Pos)
7 bar
Mounting Screws
M6 × 45 (ISO 4762)
Pilot Flow For Fast Switching
35 l/min
Porting Pattern
ISO 4401-05-05-0-05
Screw Tightening Torque
12.5 Nm
Size
NG10
Spool Symbol
D
Switching Positions
2
Weight (one Solenoid Version)
6.4 kg
1620 Old Apex Road
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