Rexroth directional valve 4WEH22JB7X/6EG24N9EK4/B10V

Rexroth directional valve 4WEH22JB7X/6EG24N9EK4/B10VREXROTH electro-hydraulic directional valve from Germany, in stock, Wuhan Baishi Automation Equipment Co., Ltd. specializes in selling products, with real photos and original factory packaging. Customers can buy with peace of mind and use with peace of mind. Common products in stock supply, welcome new and old customers to inquire and purchase!

Rexroth R901489565 (4WEH22JB7X/6EG24N9EK4/B10V) electro-hydraulic directional valve: the reliable control core of industrial hydraulic systems

In modern industrial hydraulic control systems, the electro-hydraulic directional valve serves as a key hub connecting electrical control signals and hydraulic power, and its performance directly determines the operational accuracy, stability, and efficiency of the entire equipment. As a global enterprise in the field of hydraulic control, Bosch Rexroth's 4WEH series electro-hydraulic directional valve has become the preferred solution for medium and high pressure, high flow conditions due to its quality and reliable performance. Among them, the R901489565 (4WEH22JB7X/6EG24N9EK4/B10V) model, with optimized structural design and precise control characteristics, is widely compatible with various heavy industrial equipment, providing efficient and stable directional control solutions for hydraulic systems.

1、 Product Overview

R901489565 belongs to the Rexroth 4WEH22 series pilot operated electro-hydraulic directional valve, which is a three position four-way structure. Its core function is to control the start, stop, and flow direction switching of oil in the hydraulic system, and then drive the hydraulic cylinder, hydraulic motor, and other actuating components to complete precise actions. This valve adopts the 7X series specification design, integrating high-performance DC electromagnet and pilot control structure, balancing high flow capacity and adaptability to high-pressure working conditions. It is an ideal component for heavy-duty hydraulic systems to achieve automation control.

Model Analysis

4WEH: Pilot operated directional spool valve with electro-hydraulic operation

22: nominal specification (diameter 22)

JB: Valve core function

7X: Component Series (7X Series, Performance Optimized Edition)

6E: High power valve

G24:24V DC electromagnet, wet structure

N9: With implicit emergency operation

E: Pilot control oil internal control, external control

K4: Electrical connection type

B10: Additional configuration (with drain port damping of 1.0mm)

V: Sealed FKM

core parameters

Maximum working pressure: 350 bar (main oil circuit)

Maximum flow rate: up to 800L/min

Applicable voltage: DC24V

Installation standard: ISO 4401-05-04-O-05

Applicable media: Mineral hydraulic oils such as HL, HLP, HVLP, etc

Medium temperature: -30 ℃ to+80 ℃

Sealing material: FKM fluororubber, corrosion-resistant, high temperature resistant, long service life

2、 Core design and performance advantages

1. Pilot operated electro-hydraulic drive, fast response and stable control

Adopting a three-level control structure of direct acting electromagnet, pilot valve, and main valve core: the electromagnet receives electrical signals to drive the pilot valve core, and drives the main valve core to change direction through pilot pressure, achieving high flow oil circuit switching. Compared to pure electromagnetic directional valves, this design has greater driving force and smoother directional control, effectively reducing hydraulic shock while ensuring millisecond response speed, meeting the requirements of high-speed and high-frequency directional control conditions.

2. High pressure and high flow adaptation, suitable for heavy-duty working conditions

The main valve adopts high-strength cast iron shell and precision machined valve core, with a maximum pressure of 350 bar, which can withstand the instantaneous impact pressure of heavy equipment; Designed with a large flow channel, it can achieve a maximum flow rate of 800L/min and is suitable for high flow hydraulic systems such as excavators, steel mills, and large injection molding machines. It can meet flow requirements without the need for parallel multi valves.

3. J-type valve core function, precise application scenarios

J-shaped median functional design, with P port closed and A, B, and T ports connected during median:

System pressure maintenance: Maintain the main pump pressure in the neutral position, suitable for equipment that requires continuous pressure maintenance (such as hydraulic presses, fixtures)

Floating actuator: A and B ports are connected to the oil tank, and the hydraulic cylinder/motor can move freely, suitable for scenarios that require manual adjustment and no load floating

Reduce fever: no high pressure build-up in the middle position, reducing system energy consumption and fever

4. Durable structure, suitable for harsh working conditions

Wet electromagnetic coil: coil oil immersion cooling, vibration resistance, impact resistance, long service life, suitable for strong vibration scenarios such as engineering machinery and metallurgical equipment

Precision grinding of valve core and valve hole: minimal clearance, low internal leakage, long-term pressure maintenance without pressure relief, ensuring positional accuracy

Enhanced sealing system: K-type NBR seal, suitable for high and low temperature, multi type hydraulic oil, anti leakage, anti-aging, reducing maintenance frequency

Manual emergency operation: When the electromagnet is powered off, the valve core can be manually switched for easy debugging, maintenance, and emergency handling

5. Standardized design, easy to integrate and maintain

Compliant with international ISO installation standards, with strong universality, it can directly replace valves of the same specifications without changing the installation surface of the equipment

Modular structure: Electromagnets, pilot valves, and main valves can be independently disassembled and replaced, with simple maintenance and low cost

Equipped with LED indicator light: Real time display of electromagnetic iron power status, intuitive and efficient fault diagnosis

3、 Mainstream application areas

With its high pressure, large flow rate, and high reliability characteristics, the R901489565 electro-hydraulic directional valve is widely used in heavy industrial machinery, engineering machinery, metallurgical equipment, plastic machinery, and other fields that require strict hydraulic control requirements

Construction machinery: excavators, cranes, concrete pump trucks, loaders, controlling the movements of the boom, bucket, slewing mechanism, legs, etc., to ensure precise and smooth switching under heavy loads

Metallurgical equipment: rolling mill, continuous casting machine, heating furnace door, hydraulic shear, suitable for high temperature, high dust, high load conditions, stable control of rolling mill, cutting edge and other actuators

Plastic Machinery: Large injection molding machines, die-casting machines, controlling actions such as mold closing, injection molding, and ejection to meet the requirements of high-pressure, high-speed, and high-precision molding

Industrial machine tools: CNC presses, hydraulic presses, machining centers, achieving precise control of spindle tool changing, worktable movement, and workpiece clamping

Other fields: ship hydraulic systems, mining machinery, heavy-duty lifting platforms, material testing machines and other medium high pressure and high flow hydraulic systems

4、 Summary of Product Value

The Rexroth R901489565 (4WEH22JB7X/6EG24N9EK4/B10V) electro-hydraulic directional valve is an ideal choice for high-pressure, high flow, and high reliability hydraulic control requirements. It integrates the essence of Bosch Rexroth's century old hydraulic technology, with stable directional performance, strong adaptability to working conditions, and long service life, becoming a core component for improving equipment operating efficiency, reducing failure rates, and lowering maintenance costs. Whether it is heavy engineering machinery, precision metallurgical equipment, or automated industrial production lines, this valve component can provide stable, precise, and efficient directional control guarantee for hydraulic systems, helping equipment achieve efficient operation.

The Rexroth electro-hydraulic directional valve R901489565 (4WEH22JB7X/6EG24N9EK4/B10V) is a NG22 (CETOP 05) specification, electro-hydraulic pilot control, 4/3-way, J-type center position, 24V DC wet electromagnetic main valve, suitable for high flow hydraulic systems with a flow rate of * * ≤ 280 bar * * and a mainstream level of hundreds of liters/minute. Its core advantages include high flow rate, high reliability, center pressure holding, anti pollution, and wide temperature adaptability. The following are typical application scenarios and cases, covering heavy equipment and industrial production lines.

Typical application cases

1. Construction machinery: large hydraulic crane/truck mounted crane

Control object: Main arm extension, amplitude, rotation, hook lifting and balance control.

Key operating conditions: high load, frequent start stop, outdoor wide temperature, requiring precise positioning, neutral pressure holding, and impact resistance.

Application value: Achieving zero drift positioning of boom and hook with J-shaped center position; Plate installation adapted to compact layout in vehicles; IP65 protection and wide temperature adaptability ensure stable operation in rain and snow, from -20 ℃ to+50 ℃.

2. Metallurgical continuous casting: crystallizer vibration/straightening system

Control objects: non sinusoidal vibration hydraulic cylinder of crystallizer, pressing/lifting of straightening machine, linkage of spray valve group in the secondary cooling zone.

Key operating conditions: high temperature, dust, oil pollution, requiring high-frequency commutation, low leakage, and long service life.

Application value: NG22 diameter meets the high flow and high pressure requirements of continuous casting machines; J-type neutral position ensures vibration and locking of the depressed position; The high-precision fit of the valve core (0.003-0.005 mm gap) ensures an internal leakage of ≤ 0.3 L/min at 210 bar, avoiding crystallizer shaking.

3. Heavy forging: hydraulic press/hot forging press

Control objects: main slider lifting, top material cylinder action, pressure holding and return control.

Key operating conditions: ultra-high pressure, large tonnage, long holding time, requiring impact resistance, zero leakage, and smooth operation.

Application value: The J-shaped middle position enables the slider to maintain pressure for a long time without any pressure drop; The electro-hydraulic pilot drives the high flow main valve with a small current to reduce control energy consumption; IP65 protection and F-class insulation coils are compatible with oil and vibration environments in forging workshops.

4. Injection molding: Large injection molding machine (≥ 500 tons locking force)

Control object: Lock the hydraulic cylinder to open and close the mold, push out the ejector pin, and switch between injection and holding pressure.

Key operating conditions: high-precision positioning, fast reversing, energy-saving and pressure maintenance.

Application value: J-shaped center position ensures precise alignment and pressure retention to prevent retreat of the locking mold; Millisecond level response improves the opening and closing cycle time; Cooperate with PLC to achieve remote control and adapt to 24-hour continuous production.

5. Port machinery: container gantry crane/gantry crane

Control objects: lifting mechanism, trolley walking, lifting equipment locking and amplitude adjustment.

Key operating conditions: Heavy load, outdoor, continuous operation, requiring safety redundancy and reliable positioning.

Application value: NG22 diameter meets high flow demand; Built in emergency manual operation ensures safe reset of lifting equipment in case of power outage; Wide temperature adaptation to port environments ranging from -20 ℃ to+40 ℃.

6. Industrial production line: large hydraulic fixtures/lifting platforms

Control objects: opening and closing of automotive welding line fixtures, lifting/lowering of heavy-duty lifting platforms, and workpiece positioning.

Key operating conditions: continuous start stop, precise positioning, and anti pollution.

Application value: J-shaped center position realizes fixture position locking, preventing workpiece displacement; Plate installation facilitates the integration of valve groups in the production line; IP65 protection is suitable for workshop oily environments.

Selection and configuration suggestions

Application scenariosKey points of core configurationReasons for selection

construction machineryExternal pilot oil supply, IP65 coil, emergency manualVehicle/outdoor protection and emergency needs

Metallurgical continuous castingInternal pilot oil supply, high anti pollution valve coreHigh temperature dust environment, high-frequency commutation

Forging/Injection MoldingJ-type center position, high sealing valve coreRequirements for pressure holding and positioning accuracy

港口 / 起重Redundant coils, wide temperature adaptationOverloading and Continuous Operations

summary

This model focuses on high flow, medium pressure holding, high reliability, and wide temperature adaptability, with a core focus on heavy equipment and industrial production lines in high flow, pressure holding, and high-frequency reversing scenarios. Prioritized for use in construction machinery, metallurgy, forging, injection molding, ports, and large tooling, it can significantly improve system positioning accuracy, stability, and lifespan.

The content of this article is based on publicly available products and network data. Please refer to the technical manual for actual selection and consider specific operating parameters.

Rexroth directional valve 4WEH22JB7X/6EG24N9EK4/B10V