4WRPE10W80SJ-2X/G24K0/A1M Rexroth Proportional Directional Hydraulic Valve 350bar 80L/min

Product Overview

The 4WRPE10W80SJ-2X/G24K0/A1M is a direct-operated proportional directional valve with electrical position feedback and integrated on-board electronics (OBE). It is engineered as a 100% drop-in interchangeable replacement for original Bosch Rexroth 4WRPE10 Series 2X valves, with full compatibility in mounting dimensions, port pattern and electrical interface.

Manufactured to Rexroth original technical standards, every unit undergoes 100% full working condition simulation testing covering high/low pressure, full flow range and temperature cycles before delivery. Featuring low hysteresis, high repeatability and fast response, it delivers precise flow and direction control for a wide range of industrial hydraulic systems, and complies with CE and RoHS standards.

Technical Specifications

• Model: 4WRPE10W80SJ-2X/G24K0/A1M
• Nominal size: 10
• Rated flow (Δp = 5 bar per control edge): 80 L/min
• Maximum operating pressure (ports P, A, B): 350 bar
• Maximum operating pressure (port T): 200 bar
• Spool type: Type W, open center, progressive flow characteristic
• Actuation: Proportional solenoid with closed-loop electrical position feedback
• Integrated electronics: On-board electronics (OBE) with undervoltage fault detection
• Supply voltage: 24 VDC
• Control signal: A1 interface, ±10 V analog voltage input
• Mounting: Subplate mounting, port pattern conforming to ISO 4401-05-04
• Seal material: NBR (Nitrile Butadiene Rubber)
• Compatible fluids: HL, HLP, HLPD, HVLP, HVLPD, HFC
• Recommended viscosity range: 20 to 100 mm²/s
• Fluid temperature range: -20 to +70 °C
• Protection class: IP65
• Net weight: approx. 7.8 kg

Key Technical Advantages

1. High-precision closed-loop control The integrated OBE continuously compares actual spool position with the command signal and dynamically adjusts the proportional solenoid output. With hysteresis ≤ 5% and repeatability ≤ 1%, it delivers dead-zone-free regulation for high-accuracy speed and position control applications.
2. High-pressure, high-flow heavy-duty capability Size 10 frame with 350 bar pressure rating at ports P, A, B and 80 L/min rated flow. The Type W open-center spool features a progressive flow curve, ensuring stable control at small openings and high flow capacity at full stroke, suitable for dynamic heavy-duty hydraulic systems.
3. 100% drop-in interchangeability Mounting face, port layout and electrical interface fully match original Rexroth 4WRPE10 Series 2X valves. It can be installed directly without modifying system piping, subplates or wiring, greatly reducing maintenance downtime and retrofit costs.
4. Full-condition reliability verification Each valve is tested under simulated working conditions across full pressure, flow and temperature ranges before delivery. Built-in undervoltage and circuit fault detection automatically deactivates solenoids in case of electrical abnormalities, preventing equipment runaway and ensuring system safety.
5. Low internal leakage and extended service life Precision lapped spool and sleeve assembly, paired with high-strength cast iron housing and wear-resistant bearing structure, delivers internal leakage far below industry standards and reduces system heat buildup. NBR seals provide excellent oil resistance and long service life under rated operating conditions.

Application Areas

• Clamping, injection and ejection systems of injection molding and die casting machines
• Speed and position control of actuators in construction machinery and metallurgical equipment
• Hydraulic feed, clamping and spindle control systems of CNC machining centers
• Proportional control circuits in wind power and marine hydraulic systems
• Hydraulic servo systems for automated production lines and testing machines
• Pressure and flow compound control loops for mining machinery and hydraulic presses

Expert Maintenance Tips

1. Before installation, ensure system fluid cleanliness meets ISO 4406 class 18/16/13. A pressure line filter with a filtration rating of ≥ 10 μm is recommended upstream of the valve to prevent spool seizure and wear of mating surfaces.
2. The subplate mounting surface must have a flatness tolerance ≤ 0.02 mm. Use ISO 4762 M6×40 socket head cap screws, tighten evenly in diagonal sequence to a torque of 11 ± 3 N·m to avoid housing deformation and spool binding.
3. Use shielded cable for control signal wiring, with the shield grounded at one end. Do not route signal cables alongside power cables to prevent electromagnetic interference from causing signal fluctuation and spool oscillation.
4. During initial commissioning, increase the command value gradually from zero to verify spool actuation direction matches system logic. For continuous operation above 60 °C, inspect and replace NBR seals every 12 months to prevent seal failure.
5. For long-term storage, drain all hydraulic fluid from the valve and seal all ports. Store in a dry, well-ventilated environment free from corrosive gases to prevent moisture damage to electronic components.