June 02, 2026

4WREE6V16-2X/G24K31/A1V Rexroth Servo Proportional Valve Product Description

The 4WREE6V16-2X/G24K31/A1V is a high-performance direct-operated proportional directional servo valve developed and manufactured by Bosch Rexroth, belonging to the 4WREE series with size 6 and component series 2X. As a core control component for industrial hydraulic systems, it integrates precision proportional solenoids, electrical spool position feedback unit and on-board integrated electronics (OBE) into an integrated structure, achieving continuous and proportional control over hydraulic oil flow direction and flow rate. This servo valve adopts spring-centered spool design and subplate mounting mode with standard porting layout complying with ISO 4401 international standards, featuring compact structure, quick response and outstanding control accuracy. It is designed for closed-loop hydraulic motion control scenarios, effectively eliminating flow force interference and load fluctuation impact through real-time position feedback and internal closed-loop correction, ensuring stable and repeatable movement of hydraulic actuatorsBosch Rexroth. Manufactured in Germany with strict European industrial production standards and full-process quality inspection, this original imported valve has excellent durability, anti-interference ability and environmental adaptability, and is widely used in high-precision industrial equipment requiring accurate speed, position and force control.

Description

4WREE6V16-2X/G24K31/A1V Rexroth Servo Proportional Valve Product Description

Product Overview

Basic Information

This servo proportional valve is a genuine original product from Bosch Rexroth, with the corresponding material number R900907440. The whole valve adopts a metal housing with high-strength alloy materials and surface anti-rust and anti-corrosion treatment, featuring firm structure and long service life. The overall dimension is designed for standard hydraulic subplate installation, and the whole machine has a reasonable weight, facilitating on-site assembly, disassembly and routine maintenance. The internal core components include precision control spool, matching valve sleeve, double proportional solenoids with central thread and detachable coils, high-sensitivity position sensor and integrated drive electronic circuit. The detachable coil design enables convenient individual replacement and maintenance without disassembling the whole valve, reducing equipment downtime and maintenance costs.

The valve is a three-position four-way directional valve with spring-centered spool. When the solenoid is de-energized, the built-in reset spring automatically centers the spool, cutting off the main oil circuit and keeping the actuator in a static state. The hydraulic control symbol is V type, with stable flow distribution characteristics during operation. The maximum rated operating pressure reaches 315 bar, and the rated flow is 16 L/min, which can meet the flow and pressure demands of most medium and small hydraulic power units. It is compatible with multiple types of hydraulic fluids including HL, HLP, HLPD and synthetic hydraulic oil, and the internal sealing elements adopt FKM fluororubber material, which is resistant to oil, high temperature and wear.

In terms of electrical configuration, the valve is equipped with integrated on-board electronics (OBE) supporting A1 type analog signal input, with a standard control signal of ±10 VDC. The rated working voltage is 24 VDC, with a wide voltage tolerance range to adapt to industrial power supply fluctuations. The electrical connection adopts a 7-pole connector (6 signal poles plus PE protective earth pole) conforming to EN 175201-804 standard, ensuring safe and reliable electrical connection and convenient wiring operation. The built-in position sensor can real-time collect the displacement signal of the control spool and feed it back to the integrated electronic unit to form an internal closed-loop control system, realizing automatic correction of spool position and greatly improving control precisionBosch Rexroth. Before leaving the factory, each valve undergoes strict performance calibration, pressure test, flow test, response test and 100-hour continuous aging test to ensure consistent and stable performance of each finished product.

The standard delivery package contains the main body of the servo valve only. Auxiliary accessories such as mounting subplates, hydraulic pipelines, sealing gaskets and electrical cables need to be purchased separately. The supporting subplates are produced in accordance with ISO and DIN standards, with good interchangeability.

Function and Positioning

Positioned as a medium-sized high-precision direct-operated proportional servo valve, the 4WREE6V16-2X/G24K31/A1V serves as a key control unit in hydraulic servo systems and proportional control systems. It is mainly used to convert electrical control signals into continuous mechanical displacement of the spool, so as to adjust the direction and magnitude of hydraulic oil flow steplessly, and then precisely control the movement direction, running speed, positioning accuracy and output force of hydraulic cylinders, hydraulic motors and other actuators. It can work independently as a single-axis control valve, and can also form a multi-axis linkage control system with multiple valves, which is suitable for both open-loop and closed-loop control working conditions.

In terms of hydraulic control functions, the three-position four-way structure realizes forward, reverse and stop control of the actuator. The V-type spool has excellent flow linearity, and the output flow changes proportionally with the input electrical signal, achieving smooth speed regulation without impact and jitter during acceleration and decelerationBosch Rexroth. The spring-centered design ensures safe reset when power is off or the control signal is lost, effectively avoiding equipment misoperation and improving system safety. The internal pressure resistance structure can withstand instantaneous pressure impact in the hydraulic circuit, maintaining stable working state under variable load conditions.

In terms of electrical control and feedback functions, the integrated OBE electronic unit can directly receive standard analog voltage signals from PLC, motion controller or industrial computer, without additional external amplifier modules, simplifying system configuration and reducing wiring complexity. The high-precision spool position sensor monitors the actual displacement of the spool in real time and feeds back the signal to the control circuit. The internal closed-loop algorithm automatically compares and corrects the deviation between the command signal and the actual position, effectively suppressing the influence of hydraulic flow force, oil temperature change and load variation, and ensuring high repeatability and positioning accuracy of the control actionBosch Rexroth. The proportional solenoid with detachable coil has fast electromagnetic response speed, enabling the valve to complete rapid switching and adjustment actions, and meeting the dynamic response requirements of high-speed operating equipment.

In terms of installation and expansion performance, the standard subplate mounting mode is compatible with various standard hydraulic manifolds and valve blocks, supporting new equipment assembly and old hydraulic system renovation and upgrading. The standardized port layout ensures universal connectivity with hydraulic pipelines of different brands. The compact overall structure saves installation space and is suitable for equipment with limited cabinet and hydraulic station space. With strong compatibility, it can be perfectly matched with Rexroth hydraulic pumps, cylinders, sensors and other hydraulic components to form a complete and reliable hydraulic servo control solution.

Core Performance Parameters

In terms of hydraulic performance, the valve adopts three-position four-way spring-centered spool structure with V-type flow symbol. The maximum continuous operating pressure is 315 bar, and the peak pressure resistance meets industrial heavy-load standards. The rated flow under standard working conditions is 16 L/min, with good flow linearity and low flow hysteresis. It is applicable to various mineral oil-based and synthetic hydraulic fluids, and the operating oil temperature range is from -20°C to +60°C. The internal flow passage is precisely machined to reduce flow resistance and pressure loss, improving the overall operating efficiency of the hydraulic system.

In terms of electrical performance, the rated supply voltage is 24 VDC, supporting normal operation within the voltage range of 18 VDC to 30 VDC. The control signal is standard ±10 VDC analog voltage signal, with A1 type signal interface. The electrical connection uses a 7-pole industrial connector with PE protection, which is dustproof and waterproof. The built-in integrated electronic circuit has strong electromagnetic compatibility and anti-interference ability, and can work stably in industrial environments with complex electromagnetic fields. The proportional solenoid has low power consumption and fast response speed, and the detachable coil is easy to maintain and replace.

In terms of control and feedback performance, the built-in spool position sensor achieves high-precision real-time position detection, forming an internal closed-loop control system. The valve has small control hysteresis and high positioning accuracy, and the action repeatability fully meets the requirements of precision motion control. The overall response speed is fast, which can quickly follow the change of control signals and complete stepless regulation of flow and direction.

In terms of environmental adaptability, the valve housing and internal components have passed strict industrial vibration and impact tests, and can adapt to mechanical vibration and shock on industrial production sites. The external protection grade meets the general industrial standard, and the internal electronic components and circuits are protected by conformal coating, with good dustproof, moisture-proof and anti-corrosion performance. It can operate normally in the ambient temperature range of 0°C to +50°C and relative humidity of 10% to 90% non-condensing environment.

General Matching Accessories

The main matching accessories for this servo proportional valve include standard hydraulic mounting subplates, which are designed according to ISO 4401 standard port layout and divided into different specifications for selection according to system pressure and flow requirements. It is recommended to use original Rexroth subplates to ensure installation accuracy and sealing performance. Supporting hydraulic accessories include high-pressure oil pipes, flange joints and combined sealing gaskets. High-pressure seamless steel pipes or rubber hoses with pressure resistance higher than the system working pressure shall be selected for oil pipes to avoid pipeline rupture and oil leakage under high pressure.

Electrical matching accessories include 7-pole dedicated connecting cables conforming to EN standards, which have multi-layer shielding structure to isolate external electromagnetic interference and ensure stable transmission of control signals. Spare parts include replaceable solenoid coils, internal sealing kits and reset springs. The detachable solenoid coil can be replaced separately when damaged without removing the whole valve. The sealing kit adopts FKM fluororubber material, which is used for regular maintenance and replacement to prevent oil leakage.

Installation accessories include fixing bolts, positioning pins and insulating gaskets. High-strength alloy bolts are used for fixing the valve on the subplate to prevent loosening caused by long-term vibration. For daily maintenance, professional hydraulic oil filter elements and oil quality testing tools are supporting supplies. Regular replacement of filter elements can keep the hydraulic oil clean and prevent impurities from wearing the precision spool and valve sleeve. It is suggested to reserve the same model of servo valve and vulnerable accessories as spare parts for emergency replacement during equipment failure. All matching accessories comply with Rexroth unified industrial standards, with reliable compatibility and stable quality.

Applicable Equipment and Fields

The 4WREE6V16-2X/G24K31/A1V proportional servo valve is a universal high-precision hydraulic control component, widely applied in various industrial fields that require precise hydraulic motion control and stepless speed regulation.

Typical applicable equipment includes precision machine tools such as CNC machine tools, grinding machines and machining centers, which use this valve to control the feeding speed, spindle movement and positioning of machine tool actuators to ensure machining accuracy and surface finish. It is also widely used in metal forming equipment such as hydraulic presses, bending machines and shearing machines, realizing precise control of pressing force, stretching speed and stroke position. In the field of industrial automation, it is applied to automated assembly lines, material handling robots and hydraulic manipulators to complete accurate grabbing, moving and positioning actions.

In addition, this valve is suitable for plastic machinery such as injection molding machines and blow molding machines, controlling the mold clamping, injection and ejection actions with stable speed and pressure. It also covers light industry machinery, packaging equipment, textile machinery and test bench equipment. It is especially suitable for medium and small hydraulic systems with high requirements for control precision, smooth operation and dynamic response. It can be used for both new equipment manufacturing and old hydraulic system renovation and transformation. As an original imported high-performance servo proportional valve, it is also the preferred component for high-standard industrial projects and equipment export projects, and can adapt to workshop environments with moderate dust, normal humidity and slight mechanical vibration.

Certification and Quality Description

The 4WREE6V16-2X/G24K31/A1V servo proportional valve is manufactured by Bosch Rexroth in Germany, and the whole production process strictly complies with ISO 9001 quality management system and European industrial manufacturing standards. All raw materials and core components are supplied by certified high-quality suppliers, and each production link implements strict process control and quality inspection. Each finished valve undergoes multiple tests including hydraulic pressure test, flow characteristic test, electrical signal test, position feedback calibration and continuous operation aging test before leaving the factory, ensuring that each product meets the factory performance standards.

This product has obtained CE certification, UL certification and RoHS environmental protection certification, complying with EU electromagnetic compatibility (EMC) directives, electrical safety directives and environmental protection requirements, and can be legally used in most countries and regions around the world. With mature structural design and precise processing technology, the valve features low failure rate, long service life and stable long-term operation performance under rated working conditions. The original manufacturer provides comprehensive global after-sales technical services, including product technical consultation, installation guidance, wiring instruction, parameter debugging and fault diagnosis. With decades of field application verification worldwide, this series of valves have been recognized by numerous industrial users for their reliable performance, convenient use and easy maintenance, and are a stable and reliable choice for medium and high-precision hydraulic servo control systems.

Ordering and Delivery Instructions

The complete ordering model is 4WREE6V16-2X/G24K31/A1V, with the corresponding material number R900907440 for accurate ordering. All supplied products are brand-new original genuine imported products, with a standard 12-month manufacturer warranty starting from the date of delivery.

The standard package only includes the main body of the servo valve. Auxiliary accessories such as mounting subplates, hydraulic pipelines, electrical cables and sealing parts are not included in the package and need to be ordered separately according to actual project requirements, with the same delivery cycle as the main valve. All imported products go through complete import customs clearance procedures, with complete customs documents and traceable logistics information. A variety of international and domestic logistics channels are available to ensure safe, intact and fast transportation of goods. Customers are recommended to confirm the product model, pressure specification, flow parameter, electrical interface type and supporting accessory list through official authorized distributors before placing orders, so as to avoid model mismatch and unnecessary losses caused by parameter errors.

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