The Rexroth 4WRA / 4WRAE series are direct-operated proportional directional valves, mainly used for flow direction control and stepless flow adjustment in hydraulic systems. They are typical four-way proportional directional valves. The series drives proportional solenoids via electrical signals to achieve continuous control of hydraulic oil flow direction and flow rate, thereby precisely controlling the speed and direction of hydraulic cylinders or motors, making starts, stops, and speed changes smoother.

The 4WRAE type integrates an on-board electronics amplifier (OBE) and spool position feedback device, enabling closed-loop control at the spool level, significantly improving control accuracy and system stability. The valves comply with ISO mounting standards for easy integration into hydraulic systems and can be combined with Rexroth amplifiers or controllers to meet high-performance servo control applications.

Rexroth Valve 4WRAE Features

Direct operated proportional directional valve without electrical position feedback and integrated electronics (OBE) for type 4WRAE.
Control the direction and magnitude of a flow.
Actuation by means of proportional solenoids with central thread and removable coil.
For subplate mounting:
Connection position to ISO 4401.
Subplates to catalogue sheets RE 45052 (NS6) or RE 45054 (NS10) separate order, see page 12 to 15.
Spring centred control spool.
Control electronics: - 4WRAE: integrated electronics (OBE) with voltage input or current input (A1 resp. F1); - 4WRA: digital or analogue amplifier in Eurocard format (separate order); analogue module amplifier.

Advantages of the Rexroth 4WRAE:

Bosch Rexroth 4WRA and 4WRAE proportional directional valves are high-performance electro-hydraulic proportional control components, widely used in hydraulic systems requiring high precision and dynamic response. Main advantages include:

1. High-precision control

Spool displacement is proportional to input signal, achieving continuous, precise flow and directional adjustment.
4WRAE type with integrated feedback and OBE forms closed-loop control with high repeatability, low hysteresis, and stable performance.

2. Fast response and excellent dynamics

Optimized proportional solenoids and spool design ensure fast response, adapting sensitively to dynamic load changes.
Especially suitable for injection molding machines, presses, and test benches requiring high frequency and quick response.

3. Smooth stepless adjustment

Flow can be continuously adjusted proportional to input signal, ensuring soft start/stop and smooth transitions, reducing shocks, noise, and equipment wear.

4. Multiple specifications and versatility

Available in NG6 and NG10 sizes with multiple spool options, meeting different flow demands.
Conforms to ISO 4401 standards for easy integration and replacement in various systems.

5. High reliability and durability

Designed for pressures up to 315 bar, built with high-quality materials and advanced processes.
Strong contamination resistance and long service life, proven in industrial, energy, and construction machinery applications

6. Energy saving and efficiency

Low internal leakage reduces energy loss.
Can be combined with variable pumps for on-demand supply, significantly improving system efficiency and reducing energy consumption.

Applications of Rexroth 4WRA

1. Industrial automation

Machine tools & forming equipment: presses, bending machines, shears for precise positioning and smooth pressure control.
Injection molding machines: control injection speed and holding pressure for high-quality molding.
Test benches: fatigue, vibration, or dynamic loading rigs with high repeatability and dynamic response.

2. Construction machinery

Excavators, cranes, rollers: precise speed and directional control of actuators for higher efficiency and safety.
Hydraulic supports or platforms: smooth movement and load holding.

3. Renewable energy

Wind turbine pitch systems: precise blade angle control for synchronization and load balancing.

4. Metal processing & rolling

Rolling mill hydraulic systems: precise flow/pressure control ensures uniform thickness and quality.
Presses/bending machines: smooth pressing and high-precision positioning, reducing impact and wear.

5. Marine and heavy industry

Hydraulic steering gear and power transmission systems: stable rudder control for accurate navigation.
Heavy-duty hydraulic systems: withstand high pressure, resist contamination, adaptable to harsh environments.

Replacement Models – Rexroth 4WRA / 4WRAE vs Parker, Eaton Vickers, Atos

The table below shows common functional equivalent models of Rexroth 4WRA and 4WRAE proportional directional valves in the Parker, Eaton Vickers, and Atos brands, which can be used as a reference for equipment maintenance, spare parts replacement, and system upgrades.

Rexroth Model	Parker Equivalent	Eaton Vickers Equivalent	Atos Equivalent
4WRA	D1FB/D3FB	KDG4V	DHZOA0/DKZORA1
4WRAE	D1FB/D3FB	KBDG4V	DHZOAE0/DKZORAE1

FAQ

Q1: What is the difference between 4WRA and 4WRAE?

4WRA: Without integrated OBE, requires external amplifier (e.g., Rexroth VT series).
4WRAE: With integrated OBE, directly accepts standard signals (±10V, 4–20mA), simpler wiring, more precise control.

Q2: What is the weight of 4WRA and 4WRAE valves?

Series	Size	4WRA Weight	4WRAE Weight
2X	NG6	2.0 kg	2.2 kg
	NG10	6.6 kg	6.8 kg
3X	NG6	2.0 kg	2.5 kg

Q3：Is maintenance complicated?

No. Simple maintenance, high-quality materials, low leakage design, strong contamination resistance, long service life. Suitable for industrial, construction, and energy fields.

Q4: Can you provide Certificate of Origin (COO)?

Yes, COO can be provided upon request, subject to actual conditions and additional costs.

Q5: Can you provide Test Report?

Yes, certain test reports/certificates are available upon request at quotation or order stage, with extra cost.

Q6: Can you provide EUR.1 Certificate?

Yes. Applicable for imports from countries with EU trade agreements (mainly Central/Eastern Europe & Middle East). Fee: €160 per certificate. 1

Q7：Can you provide CAN Certificate?

This is an EU–Korea FTA certificate. For goods under €6000 originating in EU, entry into Korea usually does not require CAN certificate. We generally do not provide this certificate.

New and original Rexroth valves 4WRAE supply by Heash Technique B.V. with competitive prices. welcome to ask for 4WRA 6, 4WRA 10, 4WRAE 6, 4WRAE 10. some of Rexroth 4WRAE valves are stock in our warehouse.

Rexroth Valve 4WRAE model types as R900929318 4WRAE10E60-2X/G24N9K31/F1V, R900949757 4WRAE10W1-60-2X/G24N9K31/F1V, R900954088 4WRAE10W60-2X/G24K31/A1V, R900581367 4WRAP 6W7-07-2X/24K4/M, R900558356 4WRAE10E60-2X/G24N9K31/A1V, R900954087 4WRAE10W30-2X/G24K31/A1V, R900936137 4WRAEB6W15-2X/G24N9K31/A1V, R900954077 4WRAE6W15-2X/G24K31/A1V, R900953168 4WRAE6E03-2X/G24N9K31/A1V, R900954407 4WRA6W30-2X/G24K4/V, R900900987 4WRAE6W30-2X/G24N9K31/A1V, R900936935 4WRA6EA30-2X/G24N9K4/V, R900925687 4WRAE10W1-30-2X/G24N9K31/F1V, R900732536 4WRAE10W1-60-2X/G24K31/F1V, R900972654 4WRAP 6 W7-04-30=G24K4/M=00, R961004961 4WRAP 6 W7-07-3X/G24K4/M, R901054483 4WRA10EA00-2X/G24K4/V-828, R900911679 4WRA6E15-2X/G24N9K4/V-589, R901016752 4WRA6V30-2X/G24N9K4/V, R900906262 4WRA 6 E07-2X/G24N9K4/V, R900953654 4WRA-6V30-23/G24N9K4/V-589, R900954070 4WRAE 6 E15-23/G24K31/A1V, R900953093 4WRA6W30-2X/G24K4/V-589, R900920055 4WRAE10W60-2X/G24N9K31/F1V, R900711868 4WRAE 10 W30-2X/G24K31/F1V, R900710530 4WRAE10W60-2X/G24K31/F1V, R900954071 4WRAE6E30-2X/G24K31/A1V, R900922439 4WRAE 10 W30-2X/G24N9K31/F1V, R900762072 4WRAE6W30-2X/G24K31/F1V, R900972658 4WRAP6W7-07-30-G24K4/M=00, R900558355 4WRAE 6 E30-23/G24N9K31/A1V, R978879310 4WRAEB6E12-1X/G24N9DK26/MR, R900900988 4WRAE10W60-2X/G24N9K31/A1V, R900902940 4WRA6E30-2X/G24N9K4/V, R900925006 4WRAE6E07-2X/G24N9K31/A1V, R900909389 4WRAE6E15-2X/G24N9K31/A1V, R900925456 4WRAE6E07-2X/G24N9K31/F1V, R900921245 4WRA6E30-2X/G24N9K4/V-589, R900913443 4WRA6W15-2X/G24N9K4/V, R900954078 4WRAE 6W302X/G24K31A1/V, R900954080 4WRAE 6 W1-30-2X/G24K31/A1V, R900954064 4WRA 10 EA60-2X/G24K4V.

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Download:

Data Sheet of 4WRA series.pdf