4WRP10KB130P-2X 5WRP10F1B70L-2X Rexroth Valve NG10

Product Overview

The 4WRP10KB130P-2X/G24Z4/M (Material No. 0811404900) and 5WRP10F1B70L-2X/G24Z4/M (Material No. 0811402113) are core models within Bosch Rexroth’s proportional directional valve product lines, belonging to the 4WRP and 5WRP series respectively. Both employ direct-operated architecture with electrical position feedback (LVDT), achieving continuous, proportional control of flow and direction through proportional solenoid actuation.

The 4WRP10KB130P-2X/G24Z4/M belongs to the 4WRP10 series, nominal size NG10, with a rated flow of 130 L/min and maximum operating pressure of 315 bar. The valve features direct-operated design with the spool driven directly by a proportional solenoid and an LVDT displacement sensor for full closed-loop position control. Model code breakdown: “KB130P” denotes spool function and flow configuration, “2X” is the component series, “G24Z4” indicates 24 V DC supply with DIN 43560-AM2 connector, and “M” specifies NBR seals.

The 5WRP10F1B70L-2X/G24Z4/M belongs to the 5WRP10 series, nominal size NG10, with maximum flow of 70 L/min (at Δp = 11 bar) and maximum operating pressure of 350 bar. Model code breakdown: “F1B” represents direct-operated proportional directional valve, “70L” indicates maximum flow of 70 L/min, and “G24Z4” denotes 24 V DC solenoid with closed-loop position feedback control. The valve dynamically regulates circuit pressure within milliseconds, suitable for precision hydraulic systems with demanding response speed and control accuracy requirements.

Both valves feature subplate mounting per ISO 4401 standards and are directly interchangeable with Rexroth valves of the same specification. Every unit undergoes 100% simulation-based testing prior to shipment, covering null stability, flow linearity, response time, and internal leakage.

Technical Specifications

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

4WRP10KB130P-2X/G24Z4/M Technical Specifications:

• Complete Model: 4WRP10KB130P-2X/G24Z4/M

• Material Number (MNR): 0811404900

• Brand: Bosch Rexroth

• Product Series: 4WRP10 series, component series 2X

• Product Type: Direct-operated proportional directional valve with electrical position feedback (LVDT)

• Nominal Size: NG10 (ISO 4401 / Cetop 5)

• Mounting: Subplate mounting

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

• Rated Flow: 130 L/min

• Drive Type: Direct-operated, proportional solenoid

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

• Supply Voltage: DC 24 V (G24)

• Electrical Connector: DIN 43560-AM2 (Z4)

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

• Seal Material: NBR nitrile rubber (M)

• Mounting Surface Standard: DIN ISO 4401 (Size 10 with additional L port)

5WRP10F1B70L-2X/G24Z4/M Technical Specifications:

• Complete Model: 5WRP10F1B70L-2X/G24Z4/M

• Material Number (MNR): 0811402113

• Brand: Bosch Rexroth

• Product Series: 5WRP10 series, component series 2X

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

• Nominal Size: NG10 (ISO 4401 / Cetop 5)

• Mounting: Subplate mounting

• Max Operating Pressure: 350 bar (5076 PSI)

• Maximum Flow: 70 L/min

• Nominal Flow Range: 50 – 80 L/min

• Drive Type: Direct-operated, proportional solenoid

• Position Feedback: Potential feedback (LVDT) with integrated electronics (OBE)

• Supply Voltage: DC 24 V (G24)

• Electrical Connector: DIN 43560-AM2 (Z4)

• Digital Interface: IO-Link for Industry 4.0

• Seal Material: NBR nitrile rubber (M)

• Weight: Approx. 4 kg

Note: Specifications are based on Bosch Rexroth official technical documentation and verified supplier technical pages (IAS Components, Sotekshop, Buyrexroth, etc.). The rated flow parameter (130 L/min) for the 4WRP10KB130P-2X corresponds to the model code associated with Material No. 0811404900. The maximum flow of 70 L/min for the 5WRP10F1B70L-2X is explicitly indicated by the “70L” model code, with the nominal flow range of 50 – 80 L/min sourced from supplier technical pages. Always verify against the complete model code and consult the latest Rexroth official technical documentation during selection.

Key Technical Advantages

1. Direct-Operated Architecture with Position Feedback Closed-Loop Control for High-Precision Flow Regulation

Both valves employ direct-operated design with the spool driven directly by a proportional solenoid, eliminating the need for external pilot oil supply. The 4WRP10KB130P-2X features an LVDT displacement sensor for full closed-loop spool position feedback control. The 5WRP10F1B70L-2X employs a closed-loop control architecture with potential feedback and integrated electronics (OBE), enabling dynamic circuit pressure regulation within milliseconds for precise actuator positioning within minimal error. The 5WRP10 series also features an IO-Link digital interface for Industry 4.0 digital integration.

2. High-Response Dynamic Performance for Precision Control Requirements

The 5WRP10F1B70L-2X belongs to the high-response directional valve product line with response speed significantly superior to conventional proportional valves. Every character in the model code represents condensed engineering language — F1B for direct-operated proportional directional valve, 70L for maximum flow of 70 L/min, and G24Z4 for 24V DC solenoid with closed-loop position feedback control. Compared with market imitations (solenoid hard-pushing the spool with over 300ms response lag), this valve responds to system pressure fluctuations within milliseconds, preventing defects such as surface flow marks, flash, and dimensional deviation caused by minor deviations.

3. High Pressure Rating with Compact Subplate Design

The 4WRP10KB130P-2X has a maximum operating pressure of 315 bar, while the 5WRP10F1B70L-2X reaches 350 bar, both satisfying medium-to-high pressure hydraulic system control requirements. The subplate mounting design enables direct installation onto integrated manifolds, with the mounting surface conforming to DIN ISO 4401 standards (Size 10 with additional L port), reducing leakage points and installation space requirements for easy system integration and maintenance.

4. 100% Simulation-Based Testing and Drop-In Interchangeability

Every valve undergoes 100% simulation-based testing prior to shipment, covering null stability, flow linearity, response time verification, and internal leakage detection. Both valves are fully compatible with the OEM Rexroth specification in mounting dimensions (ISO 4401 / DIN 24340 standard interface), electrical interface (DIN 43560-AM2 connector), and performance characteristics, enabling direct replacement without hydraulic circuit or control wiring modification. The 5WRP10 series benefits from Rexroth’s 20 years of fluid simulation and metal micro-machining expertise, with spool concentricity reaching 0.001mm level.

Application Areas

• Injection Molding Machines: Closed-loop control of injection velocity and hold pressure; the millisecond-level response of the 5WRP10F1B70L-2X effectively improves part consistency and yield

• 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

• Precision Machine Tools: Flow and direction control for hydraulic feed axes

• Automation Lines: Integration with PLC and motion controllers for precision position, velocity, or force control

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

Expert Maintenance Tips

Pre-Installation Checks:

• Verify manifold mounting surface conforms to ISO 4401 / DIN 24340 standards; surface roughness meets requirements

• Flush all piping with clean hydraulic fluid prior to installation; ensure system cleanliness meets proportional 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 integrated electronics (OBE) status indicators; confirm 24 V DC supply remains stable within allowable range

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

• The 5WRP10 series features IO-Link digital interface; utilize digital condition monitoring for predictive maintenance

Troubleshooting Guide:

• Spool fails to actuate or responds abnormally: Check 24 V DC supply, verify control signal reaches the valve correctly, check DIN 43560-AM2 connector contact integrity

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

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

• Slow response: Check system cleanliness level; verify electronic component parameter settings are properly matched