Bokin Electro-Hydraulic Technology (Foshan) Co., Ltd. is one of the leading manufacturers and suppliers of 4WRTE10 A1 Pilot‑Operated Directional Control Valve
±10V Voltage Control | NG10 Size | Integrated OBE | Electrical Position Feedback in China. If you're going to wholesale bulk durable 4WRTE10 A1 Pilot‑Operated Directional Control Valve
±10V Voltage Control | NG10 Size | Integrated OBE | Electrical Position Feedback made in China, welcome to get pricelist from our factory. All customized products are with high quality and competitive price.
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Key Specifications At a Glance
| Parameter | Value |
|---|---|
| Nominal Size | NG10 (Component Series 4X) |
| Mounting Standard | ISO 4401‑05‑05‑0‑05 |
| Max Operating Pressure (A/B/P ports, main valve) | 350 bar |
| Max Operating Pressure (T port, external pilot return) | 315 bar |
| Max Operating Pressure (internal pilot supply) | 100 bar |
| Max Flow | 170 L/min |
| Rated Flow (Δp = 5 bar per control edge) | 25 / 50 / 100 L/min |
| Control Signal | A1 interface, ±10 VDC differential input/output |
| Input Resistance | 100 kΩ |
| Hysteresis | ≤ 0.1% |
| Response Sensitivity | ≤ 0.05% |
| Zero Point Calibration | ≤ 1% (ex works) |
| Temperature Drift | ＜ 0.3% / 10 °C |
| Supply Voltage | 24 VDC (18 – 35 VDC range) |
| Protection Class | IP65 (correctly mounted connector) |
| Ambient Temperature | -20°C to +50°C |
| Hydraulic Fluid Temperature | -20°C to +80°C |
| Weight | 8.7 kg |
| Optional Features | Spool position monitoring (M), electronics protection membrane (-967) |
| Flow Characteristics | L (linear) / P (linear with fine control range) |
| Seal Material | NBR (M) / FKM (V) |
| CE Compliance | MD 2006/42/EC, EMC Directive 2014/30/EU, RoHS 2011/65/EU |
Available Configurations
Select the flow rating and spool type for your system:
|
Model Number |
Rated Flow |
Spool Type |
Quick Action |
| 4WRTE 10 E-25L-4X/6EG24K31/A1M |
25 L/min |
Standard zero overlap (E) | |
| 4WRTE 10 E-25L-4X/6EG24EK31/A1M | 25 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-25L-4X/6EG24TK31/A1M | 25 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-25L-4X/6EG24ETK31/A1M | 25 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-50L-4X/6EG24K31/A1M | 50 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-50L-4X/6EG24EK31/A1M | 50 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-50L-4X/6EG24TK31/A1M | 50 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-50L-4X/6EG24ETK31/A1M | 50 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-100L-4X/6EG24K31/A1M | 100 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-100L-4X/6EG24EK31/A1M | 100 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-100L-4X/6EG24EK31/A1M | 100 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-100L-4X/6EG24TK31/A1M | 100 L/min | Standard zero overlap (E) | |
| 4WRTE 10 E-100L-4X/6EG24ETK31/A1M | 100 L/min | Standard zero overlap (E) |
Need a custom spool profile or special configuration? Send us your requirements → Get Custom Solution
Product Key Advantages
1. Closed‑Loop Ultra‑High Precision Control
Pilot‑operated two‑stage structure with dual inductive position transducers (pilot + main stage) delivers closed‑loop precision control. ≤ 0.1% hysteresis and ≤ 0.05% response sensitivity ensure micron‑level flow regulation. Linear (L) or fine‑control (P) flow characteristics adapt to diverse precision requirements for position, speed and pressure control.
2. Compact Standardized Integration
ISO 4401‑05‑05‑0‑05 porting pattern enables standardized subplate mounting with a lightweight 8.7 kg structure, ideal for space‑constrained installations. Integrated OBE electronics with wide‑range 24 VDC power supply (18–35 VDC) simplify system wiring. Multiple pilot oil supply modes and seal material options adapt to mineral, biodegradable and flame‑resistant fluids.
3. Robust Industrial‑Grade Durability
IP65 ingress protection with properly mounted connectors ensures stable operation across wide temperature and humidity ranges. Excellent vibration (10–2000 Hz, 10 g) and shock (15 g, 11 ms) resistance withstands harsh industrial environments. ISO 4406 Class 18/16/13 fluid cleanliness requirement extends component service life.
4. Safety‑Enhanced & Low‑Maintenance Design
Spring‑centered main spool with automatic pressure compensation resets to central position upon power failure to prevent uncontrolled movements. Integrated undervoltage detection, cable break detection and zero‑point calibration enhance operational safety. Detachable 6‑pole + PE mating connector and standardized M6 mounting screws simplify maintenance and reduce downtime.
Compatibility Reference
|
Corresponding Rexroth Model |
BOKIN Equivalent Model |
Core Match Points |
| 4WRTE 10 E-25L-4X/6EG24K31/A1M | 4WRTE 10 E-25L-4X/6EG24K31/A1M | Same ISO 4401 NG10 mounting, ±10V A1 interface, position feedback, hydraulic performance |
| 4WRTE 10 E-25L-4X/6EG24EK31/A1M | 4WRTE 10 E-25L-4X/6EG24EK31/A1M | |
| 4WRTE 10 E-25L-4X/6EG24TK31/A1M | 4WRTE 10 E-25L-4X/6EG24TK31/A1M | |
| 4WRTE 10 E-25L-4X/6EG24ETK31/A1M | 4WRTE 10 E-25L-4X/6EG24ETK31/A1M | |
| 4WRTE 10 E-50L-4X/6EG24K31/A1M | 4WRTE 10 E-50L-4X/6EG24K31/A1M | |
| 4WRTE 10 E-50L-4X/6EG24EK31/A1M | 4WRTE 10 E-50L-4X/6EG24EK31/A1M | |
| 4WRTE 10 E-50L-4X/6EG24TK31/A1M | 4WRTE 10 E-50L-4X/6EG24TK31/A1M | |
| 4WRTE 10 E-50L-4X/6EG24ETK31/A1M | 4WRTE 10 E-50L-4X/6EG24ETK31/A1M | |
| 4WRTE 10 E-100L-4X/6EG24K31/A1M | 4WRTE 10 E-100L-4X/6EG24K31/A1M | |
| 4WRTE 10 E-100L-4X/6EG24EK31/A1M | 4WRTE 10 E-100L-4X/6EG24EK31/A1M | |
| 4WRTE 10 E-100L-4X/6EG24EK31/A1M | 4WRTE 10 E-100L-4X/6EG24EK31/A1M | |
| 4WRTE 10 E-100L-4X/6EG24TK31/A1M | 4WRTE 10 E-100L-4X/6EG24TK31/A1M | |
| 4WRTE 10 E-100L-4X/6EG24ETK31/A1M | 4WRTE 10 E-100L-4X/6EG24ETK31/A1M | |
|
More models are available; please contact us for additional model options. |
||
Note: For system configuration reference only. BOKIN is an independent brand. Please verify specifications before installation.
Typical Applications
- Precision injection molding & die casting equipment
- Test rigs & material testing machines
- Precision machine tools & positioning systems
- Automated production lines & robotic actuation
- Pressure & speed control hydraulic circuits
Need larger flow capacity?
Installation & Commissioning Guidelines
Installation Notes
- Thoroughly clean all oil ports and connecting surfaces before installation to prevent contaminants from entering the valve body.
- Confirm the control signal type (±10V voltage) and power‑supply voltage match the valve nameplate specifications before wiring.
- Tighten 4 mounting bolts evenly to the recommended torque (13.5–15.5 Nm for M6 screws) to avoid valve‑body deformation and internal leakage, complying with ISO 4401‑05‑05‑0‑05 NG10 mounting specifications.
- Preferred horizontal installation. Ensure the tank line does not run empty; install a back‑pressure valve if required by installation conditions.
- Use shielded LiYCY cable (7×0.75 mm² up to 25 m / 7×1.0 mm² up to 50 m) with shield connected to PE only on the supply side for EMC compliance.
- Gradually ramp‑up system pressure during commissioning. Inspect for leakage and abnormal noise before switching to full‑load operation.
Safety Precautions
- When designing safety‑related controls, observe applicable industry‑specific standards and regulations.
- Fit pressure‑relief valves in the hydraulic circuit for overpressure protection.
- Implement emergency‑stop logic to de‑energize the valve under fault conditions.
- Valves with spool position monitoring must only be installed, adjusted and maintained by trained specialists.
- Zero‑point adjustment shall only be performed by instructed specialists.
FAQ
Q: What is the main difference between 4WRTE10 and 4WREE10?
A: 4WRTE10 features electrical position feedback on both pilot and main stages for closed‑loop ultra‑high precision control (≤ 0.1% hysteresis). 4WREE10 is a standard proportional valve with lower precision. Both share the same NG10 mounting footprint.
Q: What is the optional spool position monitoring function?
A: The optional "M" version adds an inductive position switch that detects main spool position and outputs switching signals for system monitoring and safety functions, compliant with EN 13849‑1 PL d / PL e safety categories.
Q: What pilot oil supply modes are available for 4WRTE10?
A: Four standard modes: external pilot & external return (standard), internal pilot & external return (E), internal pilot & internal return (ET), external pilot & internal return (T). Select based on your system circuit design.
Q: What about warranty and lead‑time?
A: All standard valves carry a 12‑month quality warranty from delivery date plus lifelong technical consultation. Standard 4WRTE10 A1 configurations ship within 2‑4 weeks after order confirmation.
Ready to Get a Quote?
Send us your required model, quantity and application details, and our team will reply within 24 hours with a formal quotation.
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