China Customized 4WRLE Manufacturers - Wholesale 4WRLE in Stock

BOKIN 4WRLE Series Proportional Directional Valves

Main Spool Position Feedback | High Precision | Integrated OBE

4WRLE series are pilot-operated two-stage proportional directional valves with electrical position feedback on the main spool and integrated on-board electronics (OBE). Designed for high-precision position, velocity and pressure control in industrial hydraulic systems, they match the mounting dimensions, electrical interfaces and control performance of equivalent Rexroth 4WRLE configurations, supporting straightforward drop-in installation.

Available in NG10 to NG35 nominal sizes, with ±10V voltage, 4-20mA current loop and optional IO-Link digital interface, ideal for injection molding machine supporting systems and other precision closed-loop hydraulic applications.

Core Specifications：

NG10 – NG35 Sizes | 350 Bar Max Pressure | Up to 1500 L/min Rated Flow | Hysteresis <0.1% | 12-Month Warranty

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4WRLE10 A1 Pilot‑Operated Directional Control Valve
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BOKIN 4WRLE10 A1 is a pilot‑operated two‑stage directional control valve with electrical position feedback and integrated on‑board electronics (OBE). Equipped with servo‑quality pilot spool & sleeve

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4WRLE16 A1 Pilot‑Operated Directional Control Valve
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BOKIN 4WRLE16 A1 is a pilot‑operated two‑stage directional control valve with electrical position feedback and integrated on‑board electronics (OBE). Equipped with servo‑quality pilot spool & sleeve

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4WRLE25 A1 Pilot‑Operated Directional Control Valve
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BOKIN 4WRLE25 A1 is a pilot‑operated two‑stage directional control valve with electrical position feedback and integrated on‑board electronics (OBE). Equipped with servo‑quality pilot spool & sleeve

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4WRLE27 A1 Pilot‑Operated Directional Control Valve
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BOKIN 4WRLE27 A1 is a pilot‑operated two‑stage directional control valve with electrical position feedback and integrated on‑board electronics (OBE). Equipped with servo‑quality pilot spool & sleeve

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4WRLE Series Pilot‑Operated Directional Control Valves
BOKIN 4WRLE series are pilot‑operated two‑stage directional control valves with electrical position feedback and integrated on‑board electronics (OBE). Equipped with servo‑quality matched spool &

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Featured Product Models

Select the exact configuration for your system, and click to view full details for each model.

Model	Control Type	Nominal Size	Max Flow	Key Feature	Quick Action
4WRLE10 A1	±10V Voltage	NG10	300 L/min	Main spool feedback, fast response	View Details
4WRLE16 A1	±10V Voltage	NG16	800 L/min	Medium flow, high closed-loop accuracy	View Details
4WRLE25 A1	±10V Voltage	NG25	1250 L/min	Medium-large flow, injection molding optimized	View Details
4WRLE27 A1	±10V Voltage	NG27	1500 L/min	Large flow, high precision regulation	View Details

Not sure which model fits? Send us your working pressure, flow rate and application, and our engineers will recommend the optimal configuration within 24 hours.

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Core Advantages of 4WRLE Series

1.Rexroth-Compatible Mounting & Interfaces

Manufactured strictly to ISO 4401 mounting standards, with fully matched port dimensions, electrical interfaces and main spool feedback design to original Rexroth 4WRLE series. It supports direct drop-in replacement into existing manifold blocks without any rework or modification, greatly reducing retrofit cost and downtime.

2. Main Spool Direct Position Feedback for Higher Accuracy

Direct electrical position detection on the main spool eliminates pilot stage deviation, delivering higher closed-loop control accuracy than pilot-feedback valves. It ensures stable and precise regulation for position, velocity and pressure control, perfectly matching the precision requirements of injection molding systems.

3. Two-Stage Pilot Structure with Fast Dynamic Response

The pilot-operated design supports up to 1500 L/min large flow capacity while maintaining fast dynamic response (minimum 25ms for NG10 size). It balances high flow performance and precise regulation, suitable for medium-to-large hydraulic systems with high precision demands.

4. Optimized for Injection Molding Supporting Systems

Specially calibrated flow characteristics and spool profiles match the clamping, injection and ejection processes of injection molding machines. It ensures stable mold closing force, precise injection speed and consistent product quality, effectively reducing production scrap rates.

Rexroth 4WRLE Cross-Reference Guide

Corresponding Rexroth Model	BOKIN Equivalent Model	Core Specifications
4WRLE 10 Q3-100M-4X/MPT/24A1	4WRLE 10 Q3-100M-4X/MPT/24A1	NG10, 300 L/min max, ±10V, main spool feedback, MPT pilot supply
4WRLE 16 Q3-250M-4X/MXY/24A1	4WRLE 16 Q3-250M-4X/MXY/24A1	NG16, 800 L/min max, ±10V, main spool feedback, MXY pilot supply
4WRLE 25 Q3-400M-4X/MXY/24A1	4WRLE 25 Q3-400M-4X/MXY/24A1	NG25, 1250 L/min max, ±10V, main spool feedback, MXY pilot supply
4WRLE 27 Q3-600M-4X/MXY/24A1	4WRLE 27 Q3-600M-4X/MXY/24A1	NG27, 1500 L/min max, ±10V, main spool feedback, MXY pilot supply

Note: This cross-reference table is for configuration reference only. BOKIN valves are independently developed and manufactured products. Please confirm full model specifications with our team before installation to ensure compatibility.

Technical Specifications Overview

Specification	4WRLE 10 (NG10)	4WRLE 16 (NG16)	4WRLE 25 (NG25)	4WRLE 27 (NG27)	4WRLE 35 (NG35)
Max Operating Pressure (A/B/P ports, external pilot)	350 bar	350 bar	270 bar	270 bar	350 bar
Max Flow	300 L/min	800 L/min	1250 L/min	1850 L/min	4700 L/min
Rated Flow (Δp = 5 bar per control edge)	60–100 L/min	200–250 L/min	350–400 L/min	430–600 L/min	1000–1500 L/min
Supply Voltage	24 VDC (18–36 VDC range)	24 VDC (18–36 VDC range)	24 VDC (18–36 VDC range)	24 VDC (18–36 VDC range)	24 VDC (18–36 VDC range)
Control Interface	±10 V (A1) / 4–20 mA (F1) / Optional IO-Link (L1)	±10 V (A1) / 4–20 mA (F1) / Optional IO-Link (L1)	±10 V (A1) / 4–20 mA (F1) / Optional IO-Link (L1)	±10 V (A1) / 4–20 mA (F1) / Optional IO-Link (L1)	±10 V (A1) / 4–20 mA (F1) / Optional IO-Link (L1)
Step Response Time (0–100%)	< 25 ms	< 37 ms	< 36 ms	< 36 ms	< 55 ms
Hysteresis	< 0.1%	< 0.1%	< 0.1%	< 0.1%	< 0.1%
Response Sensitivity	< 0.05%	< 0.05%	< 0.05%	< 0.05%	< 0.05%
Mounting Standard	ISO 4401-05-05-0-05	ISO 4401-07-07-0-05	ISO 4401-08-08-0-05	ISO 4401-08-08-0-05	ISO 4401-10-09-0-05
Protection Class	IP65 (correctly mounted connector)	IP65 (correctly mounted connector)	IP65 (correctly mounted connector)	IP65 (correctly mounted connector)	IP65 (correctly mounted connector)
Ambient Temperature	-20°C to +60°C	-20°C to +60°C	-20°C to +60°C	-20°C to +60°C	-20°C to +60°C
CE Compliance	MD 2006/42/EC, EN ISO 12100:2010	MD 2006/42/EC, EN ISO 12100:2010	MD 2006/42/EC, EN ISO 12100:2010	MD 2006/42/EC, EN ISO 12100:2010	MD 2006/42/EC, EN ISO 12100:2010

Typical Applications of 4WRLE Valves

Plastic Injection Molding

Die Casting Machine Control Systems

Metal Forming & Heavy Press Equipment

Hydraulic Test Rigs & Simulation Systems

Metallurgical & Steel Mill Equipment

Automated Industrial Hydraulic Stations

OEM & Customization Support

We provide flexible OEM and customization services for global distributors, system integrators and equipment manufacturers:

Custom spool flow characteristics and special circuit designs
Custom control interfaces and electrical connector types
Private label logo and nameplate printing
Custom packaging and product labeling

MOQ for custom branding is flexible. Contact our sales team for detailed OEM cooperation solutions.

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Quality & Certification

All BOKIN proportional valves are manufactured under strict process control and fully tested before shipment. Our products hold CE verification in compliance with relevant European directives and standards.

Certificate No.: ICR/VC/HM2601135
Standard: MD 2006/42/EC, EN ISO 12100:2010
Valid until: January 15, 2031

FAQ

Q: Are BOKIN 4WRLE valves compatible with Rexroth 4WRLE series installations?

A: Yes. BOKIN 4WRLE valves are independently developed products designed to match ISO 4401 mounting dimensions, port sizes, electrical interfaces and main spool feedback performance of equivalent Rexroth 4WRLE configurations. They support direct drop-in installation in compatible systems. We recommend sharing your full model code for suitability confirmation.

Q: What is the core difference between 4WRLE and 4WRKE valves?

A: 4WRLE adopts direct position feedback on the main spool for higher closed-loop control accuracy, ideal for precision injection molding and test rig systems. 4WRKE focuses on heavy-duty ultra-large flow for metallurgy and heavy forging equipment.

Q: What control interfaces are available for 4WRLE series?

A: Three interface options are available: A1 (±10V voltage input), F1 (4–20mA current loop input), and optional L1 (IO-Link digital interface). All versions come with integrated on-board electronics.

Q: What is the advantage of main spool position feedback?

A: Unlike pilot-stage feedback valves, 4WRLE directly detects the position of the main control spool, eliminating deviation caused by pilot stage wear or flow force interference. It delivers more accurate and stable closed-loop control for position, velocity and pressure regulation.

Q: Does 4WRLE series support IO-Link and safety shut-off function?

A: Yes. The optional IO-Link version supports real-time parameter configuration, condition monitoring and safety shut-off up to Category 3, PL d according to EN 13849-1, suitable for Industry 4.0 smart hydraulic systems.

Q: What is the cleanliness requirement for hydraulic oil?

A: The hydraulic fluid cleanliness shall meet ISO 4406 class 18/16/13. An effective filtration system is recommended to prevent spool jamming and extend the service life of the valve.

Need a Quote or Technical Support?

Send us your required model, quantity and application details, and our hydraulic specialists will get back to you within 24 hours with a formal quotation and professional recommendations.

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Bokin Electro-Hydraulic Technology (Foshan) Co., Ltd. is one of the most experienced 4wrle manufacturers and suppliers in China, featured by quality products and good price. Please rest assured to buy bulk advanced 4wrle in stock here from our factory. Contact us for pricelist and customized service.

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