Bokin Electro-Hydraulic Technology (Foshan) Co., Ltd. is one of the leading manufacturers and suppliers of 4WRLE10 A1 Pilot‑Operated Directional Control Valve
±10V Voltage Control | NG10 Size | Servo‑Grade Position Feedback in China. If you're going to wholesale bulk durable 4WRLE10 A1 Pilot‑Operated Directional Control Valve
±10V Voltage Control | NG10 Size | Servo‑Grade Position Feedback made in China, welcome to get pricelist from our factory. All customized products are with high quality and competitive price.
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, external pilot) | 350 bar |
| Max Operating Pressure (A/B/P ports, internal pilot) | 280 bar |
| Max Operating Pressure (T port, external pilot return) | 250 bar |
| Max Flow | 300 L/min |
| Rated Flow (Δp = 5 bar per control edge) | 60 / 100 L/min |
| Control Signal | A1 interface, ±10 VDC voltage input |
| Input Resistance | ＞100 kΩ |
| Step Response Time (0–100%) | 25 ms |
| Hysteresis | ＜0.1% |
| Response Sensitivity | ＜0.05% |
| Temperature Drift | ＜0.25% / 10°C |
| Pilot Oil Supply Modes | External supply & return (XY) / internal supply & external return (PY) / internal supply & return (PT) / external supply & internal return (XT) |
| Supply Voltage | 24 VDC (19 – 36 VDC range) |
| Protection Class | IP65 (correctly mounted connector) |
| Ambient Temperature | -20°C to +60°C |
| Weight | 9 kg |
| Optional Digital Interface | IO‑Link (L1 version), PL d / Category 3 per EN 13849‑1 |
| CE Compliance | MD 2006/42/EC, EN ISO 12100:2010, EMC Directive 2014/30/EU |
Available Configurations
Select the flow rating and spool type for your system:
|
Model Number |
Rated Flow |
Spool Type |
Quick Action |
| 4WRLE 10 Q3-100M-4X/MPT/24A1 |
100 L/min |
Q3 progressive (M characteristic) |
Need a custom spool profile or special configuration? Send us your requirements → Get Custom Solution
Product Key Advantages
1. Servo‑Grade High‑Precision Control
Servo‑quality matched pilot spool & sleeve delivers ultra‑low hysteresis (＜0.1%) and high response sensitivity (＜0.05%). Integrated OBE closed‑loop position control ensures spool positioning independent of flow forces, with stable performance across temperature variations.
2. Standardized Interchangeable Design
Manufactured strictly to ISO 4401‑05‑05‑0‑05 NG10 mounting dimensions with identical port layout and ±10V A1 electrical pin‑out matching Rexroth 4WRLE10 A1. Direct drop‑in installation without manifold re‑machining or rewiring, minimizing retrofit downtime.
3. Optional IO‑Link for Industry 4.0
Supports optional IO‑Link digital interface (L1 version) for remote parameter configuration, real‑time condition monitoring and safety shut‑off function up to PL d / Category 3 per EN 13849‑1, enabling smart factory integration.
4. Robust & Safe Industrial Reliability
IP65 ingress protection and wide temperature range withstand harsh industrial environments. Fail‑safe pilot spool position and spring‑centered main valve ensure safe system reset upon power loss. 75‑year MTTFd rating per EN ISO 13849 ensures long‑term reliability for critical precision applications.
Compatibility Reference
|
Corresponding Rexroth Model |
BOKIN Equivalent Model |
Core Match Points |
| 4WRLE 10 Q3-100M-4X/MPT/24A1 | 4WRLE 10 Q3-100M-4X/MPT/24A1 | Same mounting dimensions, electrical interface, hydraulic performance |
|
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
- Compact precision hydraulic presses & clamping mechanisms
- Micro‑positioning hydraulic cylinders & automation actuators
- Laboratory hydraulic test rigs & testing equipment
- Small material handling machinery & conveyor systems
- Medical device manufacturing & precision assembly lines
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.
- Ensure the tank line does not run empty. Install a preload valve (approx. 2 bar preload pressure) if required by installation conditions.
- Gradually ramp‑up system pressure during commissioning. Inspect for leakage and abnormal noise before switching to full‑load operation.
Safety Precautions
- Retain manual hydraulic override for backup safety during system retrofits.
- Fit pressure‑relief valves in the hydraulic circuit for overpressure protection.
- Implement emergency‑stop logic to de‑energize the proportional valve under fault conditions.
- Ensure hoses and hydraulic connections are rated for the system's maximum working pressure.
- Zero‑point adjustment shall only be performed by trained personnel.
FAQ
Q: What is the main difference between 4WRLE10 A1 and 4WRJE10 A1?
A: 4WRLE10 A1 features servo‑grade pilot spool & sleeve for higher precision (＜0.1% hysteresis) and supports optional IO‑Link digital interface. 4WRJE10 A1 is a cost‑effective standard pilot‑operated valve for general industrial systems. Both share the same NG10 mounting footprint.
Q: What pilot oil supply modes are available for 4WRLE10?
A: Four standard modes: external supply & return (XY), internal supply & external return (PY), internal supply & return (PT), external supply & internal return (XT). Select based on your system circuit design.
Q: Can this valve directly replace Rexroth 4WRLE10 series?
A: Yes. It follows the same ISO 4401 NG10 mounting standard, identical port geometry, ±10V A1 electrical interface and servo‑grade hydraulic performance. It supports drop‑in installation on compatible manifolds. Please send your full part number for final compatibility confirmation.
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 4WRLE10 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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