4WE10J3X/CW110N9K4 | Rexroth Solenoid Valve 350bar 120L/min NG10

Product Overview

The 4WE10J3X/CW110N9K4 is a Bosch Rexroth 4WE10 series direct-operated solenoid directional valve, NG10 (CETOP 5 / NFPA D05) size, with mounting pattern conforming to ISO 4401-05-04-0-05 and NFPA T3.5.1 R2-2002 D05 standards. This 4/3-way directional valve features J spool type — P port blocked, A and B ports open to T in neutral position — with direct-operated wet-armature solenoid construction.

The 4WE10 series is Bosch Rexroth‘s most iconic medium-size solenoid directional valve product line, widely used in medium-to-high pressure industrial hydraulic systems. The valve body is constructed from spheroidal cast iron with steel internal components.

As an original Bosch Rexroth 4WE10 series solenoid directional valve, this product offers complete interchangeability with Parker, Eaton/Vickers, Atos, Yuken, and other major brands — requiring no modifications to mounting interfaces or piping layouts.

Model Code Breakdown (4WE10J3X/CW110N9K4):

• 4WE: 4-way solenoid directional valve (4/3- or 4/2-way version)

• 10: Nominal Size NG10 (10 mm)

• J: Spool Type J — P blocked, A & B to T in neutral

• 3X: 3X Series (30–39, unchanged installation and connection dimensions)

• C: With wet-type solenoid

• W110: AC 110V supply (W = AC)

• N9: With concealed manual override

• K4: Without mating connector / connection box

Technical Specifications 

4WE10J3X/CW110N9K4 Specifications:

• Model: 4WE10J3X/CW110N9K4

• Material Number: R900592338

• Brand: BOSCH REXROTH

• Series: 4WE10 Series, 3X Component Series

• Product Type: Direct Operated Solenoid Directional Valve

• Spool Configuration: 4/3-way

• Spool Type: J — P blocked, A & B to T in neutral

• Nominal Size: NG10 (10 mm)

• Mounting Standard: ISO 4401-05-04-0-05 / NFPA T3.5.1 R2-2002 D05

• Mounting Type: Subplate Mounting

• Maximum Operating Pressure: 350 bar (5075 psi) 

• Maximum Flow Rate: 120 L/min (32 GPM) 

• Coil Voltage: 110V AC (50/60Hz) 

• Solenoid Type: Wet-Pin Solenoid, 90° rotatable

• Electrical Connector: 3-pin DIN connector (DIN 43650 / EN 175301-803)

• Protection Class: IP65

• Manual Override: Equipped (concealed)

• Hydraulic Fluids: Mineral oils per DIN 51524

• Body Material: Spheroidal Cast Iron

• Internal Parts: Steel

• Certifications: CE, CSA

• Mounting Bolts: M6×40 (4 bolts)

• Weight: Approx. 4.5 kg

Key Technical Advantages

1. J Spool Type — P Port Pressure Holding with Actuator Float

The 4WE10J3X/CW110N9K4 features J spool type — P port fully closed (maintaining system pressure), A and B ports open to T (actuator pressure relief and free movement) in neutral. This center position offers the ideal combination of pressure holding and actuator floating — maintaining system pressure for rapid response while allowing the actuator to float freely when de-energized (e.g., hydraulic cylinder floating positioning, motor freewheeling).

2. 350 bar High Pressure and 120 L/min High Flow Capacity

Delivers 350 bar (5075 psi) maximum operating pressure and 120 L/min (32 GPM) flow capacity in an NG10 valve body. This performance places it at the forefront of NG10 direct-operated solenoid directional valves, suitable for demanding medium-to-high pressure, high-flow hydraulic systems.

3. Wet-Armature Solenoid Design for Quiet, Long-Life Operation

Features a wet-pin solenoid directly actuating the control spool. The movable iron core operates fully submerged in hydraulic oil, providing lubrication to reduce wear and cushioning against switching impact and vibration. The solenoid coil can be rotated 90° for flexible electrical connection orientation. Coils can be replaced without opening the pressure-tight chamber.

4. Reliable Manual Override and IP65 Protection

Features a concealed manual override for emergency operation during power failure. IP65 protection is achieved with properly installed 3-pin DIN connector, effectively resisting dust and water ingress.

5. International Standard Compliance for Global Interchangeability

Mounting conforms to ISO 4401-05-04-0-05 and NFPA T3.5.1 R2-2002 D05 international standards. The 4WE10 series offers complete interchangeability with Parker, Eaton/Vickers, Atos, Yuken, and other major brands. CE and CSA certifications ensure compliance with international safety standards.

6. Multiple Voltage Options for Flexible Adaptation

This model operates on 110V AC (50/60Hz) . The 4WE10 series also offers 24V DC, 220V AC, 230V AC, and other voltage options to accommodate diverse control system requirements.

Application Areas

4WE10J3X/CW110N9K4 (J Spool — P Blocked, A&B to T):

• Injection Molding Machinery — Directional control for clamping, injection, and ejection cylinders with actuator float capability in neutral

• Hydraulic Presses and Forging Equipment — Slide position control with float function

• Die-Casting Machines — Directional and float control for high-pressure casting equipment

• Construction Machinery — Float positioning control for booms, arms, and actuators

• CNC Machine Tools — Worktable control requiring pressure holding with actuator float

• Industrial Automation Production Lines — Hydraulic actuator control requiring precise positioning and float functions

Expert Maintenance Tips

1. Installation Guidelines

• Mounting surface must conform to ISO 4401-05-04-0-05 / NFPA T3.5.1 R2-2002 D05 standards.

• Use 4 M6×40 mounting bolts — refer to manufacturer specifications for tightening torque.

• Thoroughly clean the mounting surface and all ports (P, A, B, T) before installation to prevent foreign particles from entering and causing spool sticking or seal damage.

• The solenoid coil can be rotated 90° — adjust coil orientation according to wiring requirements.

• K4 suffix indicates without mating connector — users must separately select a compatible 3-pin DIN connector.

2. Hydraulic Fluid Cleanliness

• Compatible fluids: Mineral oils per DIN 51524 standards.

• Install a return line filter with minimum 10 μm filtration rating.

3. Electrical Connection Specifications

• 4WE10J3X/CW110N9K4 uses 110V AC (50/60Hz) supply. Verify supply voltage matches coil nameplate voltage before connection.

• Electrical connector: 3-pin DIN connector (DIN 43650 / EN 175301-803) .

• Ensure the connector is fully locked to maintain IP65 protection.

4. J Spool Type Usage Considerations

• J spool type features P port closed, A & B ports open to T in neutral — system pressure is maintained while the actuator floats freely.

• Suitable for applications requiring pressure holding with free actuator movement (e.g., cylinder floating positioning, motor freewheeling).

• For precise actuator locking in neutral, select E type (all ports closed).

• For complete system unloading in neutral, select H type (all ports open).

5. Periodic Maintenance Inspection

• Inspect the valve body for external oil leakage every 2,000 operating hours or at least annually.

• Check electrical connectors for looseness, oxidation, or moisture ingress.

• Wet-armature solenoid coils can be replaced without opening the pressure-tight chamber.

• If response lag or unstable shifting is observed, first check system fluid cleanliness and verify the spool is not sticking.

• Periodically test the manual override function to ensure emergency availability.