Name: China 4WRAE6 A1 Direct‑Operated Proportional Directional Valve ±10V Voltage Control | NS6 Size | Integrated OBE Manufacturers - Bokin
Brand: Bokin
SKU: 296413958

Bokin Electro-Hydraulic Technology (Foshan) Co., Ltd. is one of the leading manufacturers and suppliers of 4WRAE6 A1 Direct‑Operated Proportional Directional Valve
±10V Voltage Control | NS6 Size | Integrated OBE in China. If you're going to wholesale bulk durable 4WRAE6 A1 Direct‑Operated Proportional Directional Valve
±10V Voltage Control | NS6 Size | Integrated OBE 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	NS6 (Component Series 2X)
Mounting Standard	ISO 4401‑03‑02‑0‑94
Max Operating Pressure (A/B/P ports)	315 bar
Max Operating Pressure (T port)	210 bar
Max Flow	42 L/min (80 L/min with dual flow path)
Rated Flow (Δp = 10 bar)	7 / 15 / 26 / 30 L/min
Control Signal	A1 interface, ±10 VDC voltage input
Hysteresis	≤ 5%
Reversal Error	≤ 1%
Response Sensitivity	≤ 0.5%
Supply Voltage	24 VDC (19 – 35 VDC range)
Protection Class	IP65 (correctly mounted connector)
Ambient Temperature	-20°C to +50°C
Weight	2.2 kg
Seal Material	FKM (suitable for mineral oils HL/HLP per DIN 51524)
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
4WRAE 6 W30-2X/G24K31/A1V	30 L/min	Overlap (W)	Inquire Now
4WRAE 6 E30-2X/G24K31/A1V	30 L/min	Standard zero overlap (E)	Inquire Now

Need a custom spool profile or special configuration? Send us your requirements → Get Custom Solution

Product Key Advantages

1. Direct‑Acting Precise Flow Control

Direct‑operated proportional solenoid actuation with spring‑centered spool delivers reliable flow and direction control for small hydraulic systems. ≤ 5% hysteresis and ≤ 1% reversal error ensure consistent response to command signals across repeated cycles.

2. Standardized Interchangeable Design

Manufactured strictly to ISO 4401‑03‑02‑0‑94 NS6 mounting dimensions with identical port layout and ±10V A1 electrical pin‑out matching Rexroth 4WRAE6 A1. Direct drop‑in installation without manifold re‑machining or rewiring, minimizing retrofit downtime.

3. Compact & Space‑Saving Design

Lightweight 2.2 kg compact footprint with subplate mounting fits tight machinery layouts. Removable solenoid coils with central thread design enable tool‑free replacement, reducing maintenance downtime.

4. Robust Industrial‑Grade Reliability

IP65 ingress protection with properly mounted connectors withstands dust and water ingress in industrial environments. FKM seals deliver long‑lasting durability with mineral hydraulic oils. Spring‑centered spool returns to neutral position upon de‑energization for safe system reset.

Compatibility Reference

Corresponding Rexroth Model	BOKIN Equivalent Model	Core Match Points
4WRAE 6 W30-2X/G24K31/A1V	4WRAE 6 W30-2X/G24K31/A1V	Same ISO 4401 NS6 mounting, ±10V A1 interface, integrated OBE, hydraulic performance
4WRAE 6 E30-2X/G24K31/A1V	4WRAE 6 E30-2X/G24K31/A1V
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

Automated assembly lines & precision positioning equipment
Small hydraulic clamping systems & fixtures
Laboratory test rigs & testing equipment
Miniature industrial machinery & micro‑hydraulic systems
Precision material handling & component positioning

Need current‑loop anti‑interference control?

View 4WRAE6 F1 (4‑20mA) →

Need larger flow capacity?

View 4WRAE10 A1 (NS10) →

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 (7–8.9 Nm for M5 screws) to avoid valve‑body deformation and internal leakage, complying with ISO 4401 NS6 mounting specifications.
Preferred horizontal installation. Ensure the tank line does not run empty; install a back‑pressure valve (approx. 2 bar preload) 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 4WRAE6 A1 and 4WRA6 A1?

A: 4WRAE6 A1 has integrated on‑board electronics (OBE) built into the valve body. 4WRA6 A1 requires a separate external amplifier for control. Both share the same NS6 mounting footprint and hydraulic performance.

Q: What is the tightening torque for 4WRAE6 mounting screws?

A: Recommended tightening torque is 7 Nm ± 10% for friction coefficient 0.09–0.14, or 8.9 Nm ± 10% for friction coefficient 0.12–0.17, using ISO 4762 M5 × 50 socket head cap screws.

Q: Can this valve directly replace Rexroth 4WRAE6 series?

A: Yes. It follows the same ISO 4401 NS6 mounting standard, identical port geometry, ±10V A1 electrical interface and 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 4WRAE6 A1 configurations ship within 2‑4 weeks after order confirmation.