Bosch Rexroth | H-4WEH25J6X6EW110N9S2DALV
H-4WEH25J6X/6EW110N9S2DAL/V
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The H-4WEH25J6X/6EW110N9S2DAL/V valve is manufactured by Bosch Rexroth as part of the WEH Directional Spool Valves series and is applied to route flow in hydraulic automation equipment. Its 4-way configuration connects pressure, tank, and two work ports so cylinders can be driven in both directions. A J spool profile provides defined metering edges, and the unit offers three spool positions for neutral, forward, and reverse functions. Nominal size NG25 sets the mounting pattern and port diameter for medium-capacity manifolds. The valve accommodates up to 700 l/min when fitted with the J spool, allowing rapid actuator movement. Operating pressure on ports P, A, and B can reach 350 bar, while the T port is rated for 250 bar to manage return flow safely.
The valve relies on external pilot control, accepting pilot pressure up to 250 bar and requiring at least 13 bar to shift the spool. FKM seals withstand common hydraulic oils and support a fluid temperature range from −15 °C to 80 °C. The design operates with kinematic viscosities between 2.8 mm²/s and 500 mm²/s, ensuring consistent lubrication across cold start and steady-state conditions. Ambient temperatures can reach 50 °C without derating, allowing installation in warm machine halls. System cleanliness must meet ISO 4406 class 20/18/15, limiting particulate contamination that could score the spool lands. Together these limits safeguard performance and service life when the valve is installed in high-duty automation circuits.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Max Ambient Temperature
50 C
Max Flow (j Spool)
700 l/min
Max Hydraulic Fluid Temperature
80 C
Max Kinematic Viscosity
500 mm²/s
Max Operating Pressure (p, A, B)
350 bar
Max Pilot Pressure
250 bar
Max T-port Pressure
250 bar
Min Hydraulic Fluid Temperature
-15 C
Min Kinematic Viscosity
2.8 mm²/s
Min Pilot Pressure (x External)
13 bar
Nominal Size
NG25
Seal Material
FKM
Spool Positions
3
Spool Type
J
Way Configuration
4-Way
1620 Old Apex Road
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