4WRPE10CB130P-2X Rexroth Proportional Valve NG10 350 bar

Product Overview

The 4WRPE10CB130P-2X/G24K0/B5M (Material No. 0811404815) is a direct-operated high-response proportional directional valve from Bosch Rexroth’s 4WRPE10 series, featuring electrical position feedback (LVDT) and integrated on-board electronics (OBE). Built on the 2X component series, it integrates the control amplifier directly onto the valve body, eliminating the external amplifier card required in conventional configurations.

The core technical characteristics are defined by three factors: the direct-operated architecture requires no external pilot oil, delivering faster response and greater contamination tolerance; the LVDT position sensor provides full closed-loop spool position control with minimal hysteresis and high repeatability; and the 130 L/min rated flow combined with 315 bar maximum operating pressure covers applications ranging from precision injection molding to heavy-duty die casting. The integrated electronics (OBE) compares the specified command value to the position actual value. In case of control deviations, the stroke solenoid is activated, and the control spool is adjusted against the spring, with stroke proportional to the command value. With a command value presetting of 0 V, the electronics adjust the control spool to central position.

The valve mounts via subplate according to ISO 4401-05-04-0-05 at nominal size NG10 (Cetop 5). Model code breakdown: “CB130P” denotes the spool function and rated flow configuration, “B5M” represents the electrical interface configuration, and “G24K0” indicates DC 24 V supply. As a drop-in replacement, the valve is fully compatible with the OEM Rexroth specification. Every unit undergoes 100% simulation-based testing prior to shipment.

Technical Specifications

All parameters below are based on Bosch Rexroth official technical documentation and verified supplier technical pages:

• Complete Model: 4WRPE10CB130P-2X/G24K0/B5M

• Material Number (MNR): 0811404815

• Brand: Bosch Rexroth

• Product Series: 4WRPE10 series, component series 2X

• Product Type: Direct-operated high-response proportional directional valve with electrical position feedback and integrated electronics (OBE)

• Spool Function: 4/3-way proportional directional valve

• Nominal Size: NG10 (ISO 4401-05-04-0-05 / Cetop 5)

• Mounting: Subplate mounting

• Max Operating Pressure (Ports P/A/B): 315 bar

• Max Operating Pressure (Port T): 250 bar

• Rated Flow: 130 L/min (at Δp = 70 bar per metering edge)

• Drive Type: Direct-operated, stroke solenoid, no external pilot oil required

• Position Feedback: LVDT displacement sensor, full closed-loop control

• Integrated Electronics: OBE (on-board amplifier), analog signal

• Supply Voltage: DC 24 V (model code ‘G24’)

• Electrical Connector: B5M type (6P+PE, DIN 43563-AM6)

• Minimum Supply Voltage: Electronics de-energized below 15 V; restart at ≥ 17.5 V

• Minimum Current Command Value: 2 mA (includes cable break detection)

• Hydraulic Fluid: Mineral oil (HL, HLP per DIN 51524)

• Seal Material: NBR nitrile rubber

• Protection Class: IP65

• Weight: Approx. 7.1 kg

• Optional Features: Electronics protection membrane (-967), damping plate (D), IO-Link digital interface

Note: Specifications are based on Bosch Rexroth official technical documentation RE 29037 and verified supplier technical pages. Model code breakdown: 4WRPE = 4/3 direct-operated proportional directional valve with integrated electronics (OBE); 10 = size NG10; CB130P = spool function and rated flow configuration; 2X = component series; G24K0 = DC 24 V supply, K0 connector configuration; B5M = electrical interface configuration. The series optionally features an IO-Link digital interface for Industry 4.0 integration.

Key Technical Advantages

1. Direct-Operated Architecture with Integrated OBE for Plug-and-Play Operation

The 4WRPE10CB130P-2X employs a direct-operated design in which the spool is driven directly by a stroke solenoid, eliminating the need for external pilot oil supply. The integrated OBE electronics unit mounts the control amplifier directly on the valve body and is factory-calibrated, enabling operation with only a 24 V DC supply and command signal — no external amplifier card required. The integrated electronics compares the specified command value to the position actual value; in case of control deviations, the relevant solenoid is activated, and the control spool is adjusted against the corresponding spring, with stroke proportional to the command value.

2. LVDT Full Closed-Loop Control for High-Precision Flow Regulation

The valve’s core control architecture employs an LVDT displacement sensor to continuously measure actual spool position, feeding the signal back to the on-board OBE electronics for dynamic correction of the solenoid drive current. This full closed-loop mechanism maintains spool positioning accuracy independent of fluid temperature variation, pressure fluctuation, and long-term wear, achieving minimal hysteresis and repeatability at industrial servo-grade levels. In applications such as injection molding hold-pressure phases and precision press-fitting, this characteristic is decisive.

3. 130 L/min High Flow Capacity with High Pressure Rating

The model delivers a rated flow of 130 L/min, a high-flow specification within NG10 proportional valves, suitable for medium-to-large hydraulic systems requiring high flow control. Maximum operating pressure at ports P/A/B is 315 bar with port T rated at 250 bar, allowing direct integration into high-pressure hydraulic circuits for heavy-duty industrial applications.

4. Comprehensive Fail-Safe Protection with Digital Interface

The valve features comprehensive fail-safe protection: when supply voltage drops below 15 V (restart at ≥ 17.5 V) or command current falls below 2 mA (including command value line cable break), the electronics de-energize the control solenoids, and the spool is held in the mechanical center position by compression springs. The series optionally supports an IO-Link digital interface for Industry 4.0 digital integration and condition monitoring. An optional electronics protection membrane (-967) prevents condensate formation, recommended for high-humidity environments. An optional damping plate (D) reduces acceleration amplitudes at frequencies above 300 Hz.

5. 100% Simulation-Based Testing and Drop-In Interchangeability

Every 4WRPE10CB130P-2X undergoes 100% simulation-based testing prior to shipment. Test protocols cover rated flow calibration, hysteresis and linearity measurement, step-response verification, and internal leakage detection. As a drop-in replacement, the valve is fully compatible with the OEM Rexroth specification in mounting dimensions (ISO 4401-05-04-0-05 interface), electrical interface (6P+PE connector), and performance characteristics, enabling direct replacement of the original valve.

Application Areas

• Injection Molding Machines: Closed-loop control of injection velocity and hold pressure for consistent part quality

• Die Casting Equipment: High-speed dynamic pressure regulation and real-time switching control

• Hydraulic Presses: Precision position/velocity control, force/position hybrid control

• Material Testing Systems: Flow and pressure closed-loop control for electro-hydraulic servo loading systems

• Vibration Tables & Test Rigs: Precision flow control under high-frequency dynamic response conditions

• Precision Press-Fitting Equipment: Servo-grade closed-loop force/position control

• Machine Tool Hydraulic Systems: Flow and direction control for precision hydraulic feed axes

• General Industrial Hydraulic Systems: Precision directional and flow control for automated production lines

Expert Maintenance Tips

Pre-Installation Checks:

• Verify the manifold mounting surface conforms to ISO 4401-05-04-0-05 standard; surface roughness Rzmax ≤ 4 μm, flatness deviation ≤ 0.01 mm/100 mm

• Flush all piping with clean hydraulic fluid prior to installation; ensure system cleanliness meets servo valve requirements

• Inspect NBR O-rings for damage and confirm compatibility with the hydraulic fluid in use

• Tighten mounting bolts in diagonal sequence to specified torque

Operational Maintenance:

• Use a 5–10 μm precision pressure filter, specified without bypass and equipped with a contamination indicator

• Recommended fluid: HL, HLP mineral oil per DIN 51524

• Periodically inspect the integrated OBE electronics status indicators; confirm 24 V DC supply remains stable (above 15 V, restart requires ≥ 17.5 V)

• Monitor null output flow offset; significant increase indicates spool/sleeve wear or LVDT sensor anomaly

• In high-humidity or significant temperature cycling environments, the electronics protection membrane (-967) is recommended to prevent condensate formation

• In high-frequency excitation (>300 Hz) applications, the damping plate (D) is recommended to reduce acceleration amplitudes

Troubleshooting Guide:

• Spool fails to actuate or responds abnormally: Check 24 V DC supply (electronics automatically de-energize below 15 V), verify command signal reaches the input correctly, confirm 6P+PE connector engagement is reliable

• Null-point drift: After ruling out fluid contamination, verify LVDT sensor feedback signal integrity; check whether the spool is stuck at a non-center position due to contamination

• Insufficient flow: Confirm system supply pressure is within the 315 bar allowable range; check spool metering edges for partial blockage by contaminant particles

• Electronics alarm: Verify command current is not below 2 mA (cable break detection trigger); check supply voltage is within normal range

• Abnormal noise: Check that system return pressure does not exceed the 250 bar maximum; confirm no back-pressure blockage in the return line