Product Overview
The 4WE10E3X/CG24N9K4/V 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 . This 4/3-way directional valve features E spool type — all ports fully closed in neutral position — with direct-operated wet-armature solenoid construction, part of the WE series size 10 (5-chamber version) .
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. This model is equipped with FKM (fluoroelastomer) seals for compatibility with a broader range of hydraulic fluids, including phosphate esters .
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 (4WE10E3X/CG24N9K4/V):
4WE: 4-way solenoid directional valve (4/3- or 4/2-way version)
10: Nominal Size NG10 (10 mm)
E: Spool Type E — all ports fully closed in neutral
3X: 3X Series (30–39, unchanged installation and connection dimensions)
C: With wet-type solenoid
G24: DC 24V supply (G = DC)
N9: With concealed manual override
K4: Without mating connector / connection box
V: FKM (fluoroelastomer) seals
Technical Specifications
4WE10E3X/CG24N9K4/V Specifications:
Model: 4WE10E3X/CG24N9K4/V
Material Number: R900718697
Brand: BOSCH REXROTH
Series: 4WE10 Series, 3X Component Series
Product Type: Direct Operated Solenoid Directional Valve
Spool Configuration: 4/3-way
Spool Type: E — all ports fully closed in neutral
Body Design: 5-chamber version
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: 150 L/min (40 GPM)
Power Consumption (DC): 35 W
Holding Power: 35 W
Coil Voltage: 24V DC
Current Consumption: 2 A (nominal hold current)
Voltage Tolerance: ±10%
Solenoid Type: Wet-Pin Solenoid, 90° rotatable
Electrical Connector: 3-pin DIN connector (DIN 43650 / EN 175301-803)
Protection Class: IP65 (with connector mounted and locked)
Insulation Class: Class F
Maximum Coil Temperature: 150°C (302°F)
Switching Time (ON): 45–60 ms
Switching Time (OFF): 15–25 ms
Maximum Switching Frequency: 15,000 cycles/hour
Duty Cycle: 100%
Hydraulic Fluids: Mineral oils per DIN 51524 and phosphate esters (FKM seals)
Fluid Temperature Range: -20°C to +80°C
Ambient Temperature Range: -20°C to +50°C
Seal Material: FKM (Fluoroelastomer)
Manual Override: Equipped (concealed)
Spring Arrangement: Mechanical Spring Center
Certifications: CE, CSA
Weight: Approx. 4.5–5.5 kg
Key Technical Advantages
1. E Spool Type — Precise Actuator Positioning and Locking
The 4WE10E3X/CG24N9K4/V features E spool type — all ports P, A, B, and T are fully closed in neutral . This center position ensures the hydraulic actuator is precisely positioned and locked when de-energized, with no position drift due to oil leakage. Ideal for applications requiring strict position holding in neutral.
2. 350 bar High Pressure and 150 L/min High Flow Capacity
Delivers 350 bar maximum operating pressure and 150 L/min (40 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 . Switching frequency reaches 15,000 cycles/hour .
4. FKM Seals for Broader Fluid Compatibility
This model is equipped with FKM (fluoroelastomer) seals, offering superior heat and chemical resistance compared to standard NBR seals . Compatible with phosphate esters and other specialty hydraulic fluids, as well as higher temperature applications .
5. Reliable Manual Override and IP65 Protection
Features a concealed manual override for emergency operation during power failure . IP65 protection is achieved with properly installed and locked 3-pin DIN connector, effectively resisting dust and water ingress .
6. International Standard Compliance for Global Interchangeability
Mounting conforms to ISO 4401-05-04-0-05 / 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 .
Application Areas
4WE10E3X/CG24N9K4/V (E Spool — All Ports Closed in Neutral):
CNC Machine Tools — Precision worktable positioning and locking control
Injection Molding Machinery — Directional and positioning control for clamping, injection, and ejection cylinders
Hydraulic Presses and Forging Equipment — Press slide position holding and control
Die-Casting Machines — Directional and positioning control for high-pressure casting equipment
Metallurgical Equipment — Precision directional and position control for rolling mill hydraulic systems
Heavy Lifting Equipment — Lifting position holding and locking control
Industrial Automation Production Lines — Hydraulic actuator control requiring precision position holding
Systems Using Phosphate Ester and Specialty Fluids — FKM seals provide broader fluid compatibility
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 .
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.
Tighten mounting bolts evenly to the specified torque to ensure proper sealing between the valve body and mounting surface.
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. Seal Material and Fluid Compatibility
This model is equipped with FKM (fluoroelastomer) seals, suitable for mineral oils and phosphate ester fluids .
FKM seals offer superior high-temperature resistance (up to +80°C) and chemical resistance .
For other specialty fluids, verify seal material compatibility.
3. Hydraulic Fluid Cleanliness
Compatible fluids: Mineral oils per DIN 51524 and phosphate esters.
Fluid temperature range: -20°C to +80°C .
Install a return line filter with minimum 10 μm filtration rating.
4. Electrical Connection Specifications
4WE10E3X/CG24N9K4/V uses 24V DC supply with voltage tolerance of ±10% .
Power consumption: 35 W ; nominal hold current: 2 A .
Electrical connector: 3-pin DIN connector (DIN 43650 / EN 175301-803) .
Ensure the connector is fully locked to maintain IP65 protection .
Each solenoid must be separately protected with a suitable fuse (K characteristic, inductive loads) .
5. E Spool Type Usage Considerations
E spool type features all ports fully closed in neutral — the actuator is locked when de-energized with no position drift .
Suitable for applications requiring precise actuator positioning and holding.
For applications requiring free actuator movement in neutral, select J type (P blocked, A&B to T) or H type (all ports open).
6. 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 .
