Bosch Rexroth | 4WEH16J7X6EW110N9DA
4WEH16J7X/6EW110N9DA
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The 4WEH16J7X/6EW110N9DA directional spool valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth. It shifts hydraulic flow paths through electro-hydraulic actuation, allowing remote electrical control in automation circuits. The spool carries symbol J, defining its flow pattern when energized or centered, and the nominal size 16 establishes passage dimensions suitable for medium-frame manifolds. A standard ISO 4401-07-07-0-05 porting pattern provides interchangeability with industry subplates. Under proper conditions the valve passes up to 300 l/min, matching the performance limit specified for NG16 spools with code J. System pressure can reach 280 bar on ports P, A, and B, so the body and internal seals are rated for high-pressure work. A high-power 6E pilot valve drives the main stage and requires a spring-centered pilot volume of 5.72 cm³ for complete stroke. When local repositioning is necessary a concealed manual override lets technicians shift the spool without removing electrical power.
Subplate mounting reduces plumbing complexity, and four M10 × 60 screws secure the valve to the manifold. Each screw must be tightened to 58 Nm to avoid distortion and ensure leak-free sealing. During operation the pilot stage may see up to 250 bar while reliable return of the spool is ensured once pressure falls below the 14 bar minimum for the spring-centered design. The complete assembly with two solenoids and return springs weighs 8.9 kg, permitting single-person handling during installation. Mean time to dangerous failure is listed at 100 years, supporting long service intervals in safety-related machinery. Together these characteristics align with the electro-hydraulic design introduced earlier and provide a directional control element that withstands rigorous duty cycles in automated hydraulic systems.
Technical Specifications
Actuation Type
Electro-Hydraulic
Manual Override
Concealed
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
14 bar
Mounting
Subplate
Mounting Screw Torque
58 Nm
Mounting Screws
4x M10 x 60
Mttfd (type Weh)
100 years
Nominal Size
16
Performance Limit (ng16, J)
300 l/min
Pilot Valve Code
6E (High-Power)
Pilot Volume (spring-centered)
5.72 cm3
Porting Pattern
ISO 4401-07-07-0-05
Spool Symbol
J
Weight (2 Solenoids, Spring-centered)
8.9 kg
1620 Old Apex Road
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