Heash Technique B.V. supplies 100% new and original Rexroth 4WRZE proportional directional valves with competitive prices, official warranty and stable delivery.
The Rexroth 4WRZE is a pilot-operated 2-stage proportional directional valve with integrated on-board electronics (OBE). Available in 4/2, 4/3, 5/2 and 5/3 configurations, it controls the direction and volume of hydraulic flow for medium to large-scale hydraulic systems. The valve is actuated by proportional solenoids via a 3DREPE 3-way pressure reducing pilot stage, delivering stable flow performance under 350 bar operating pressure and variable load conditions.
Covering nominal sizes 10 to 52 with flow rates up to 2800 L/min, the 4WRZE series features a standard ISO 4401 mounting interface that enables direct drop-in replacement for existing proportional valves. Its integrated electronics eliminate the need for external amplifier cards, making it a cost-effective and space-saving solution for both new system designs and field retrofits.
Rexroth Proportional Valve 4WRZE Key Features
Pilot-operated 2-stage Design — This Rexroth 4WRZE proportional directional valve adopts a 3DREPE pilot-driven two-stage structure, delivering stable flow control at 350 bar operating pressure. Available in sizes 10 to 52 with maximum flow up to 2800 L/min, it effectively resists load-induced pressure fluctuations in heavy industrial circuits.
Integrated OBE Electronics — Built-in on-board electronics eliminate separate amplifier cards, reducing cabinet footprint, simplifying field wiring, and lowering overall system cost for both new setups and equipment retrofits.
ISO 4401 Standard Mounting — Porting pattern fully complies with ISO 4401 standard, enabling direct drop-in replacement of existing proportional valves without manifold or pipework modifications, cutting retrofit time and cost.
Spring-centred Fail-safe — Loss of power or control signal automatically returns the main spool to neutral position, providing a predictable safe default for presses, moulding machines and marine hydraulic circuits; optional concealed manual override supports emergency debugging.
Flexible Configuration Options — Supports internal/external pilot oil supply and return, with standard NBR seals and optional FKM seals for HFC fire-resistant fluid compatibility, adapting to metallurgical, offshore and other harsh working conditions.
The 4WRZE series is a reliable high-flow proportional valve solution for medium to heavy industrial hydraulic systems requiring stable direction and flow regulation. It is widely deployed across industries where consistent performance under variable loads and high operating pressure is essential.
Hydraulic Presses & Forming Machines — Delivers consistent flow control for stamping, deep-drawing and forging press systems. The pilot-operated structure maintains stable spool position as load pressure changes through the stroke, ensuring uniform forming quality and reduced equipment impact.
Steel & Metallurgical Equipment — Used in rolling mill auxiliary drives, continuous casting systems and blast furnace hydraulics. Rated for 350 bar continuous operation with excellent resistance to cyclic heavy loads and harsh production environments.
Injection Molding & Die Casting — Provides precise flow metering for clamping, injection and holding circuits. Fast response and repeatable performance support tight cycle time requirements in plastic and die casting production lines.
Marine & Offshore Deck Machinery — Applied in winch, crane and deck machinery drives where load-induced pressure spikes are common. Optional FKM seals offer compatibility with HFC fire-resistant fluids to meet offshore safety standards.
General Industrial Automation — Ideal for material testing rigs, automated production lines and general hydraulic power units. The standard ISO 4401 interface simplifies system integration and retrofitting of existing equipment.
Commonly Requested Material Numbers (MNR)
Below are frequently ordered 4WRZE models. If your part number is not listed, please contact us freely.
Rexroth 4WRZE hydraulic proportional directional valve is a high-performance control valve, with a pilot design and proportional solenoid operation ensuring fast response and high-precision control. The stability and wide applicability of the product make Rexroth 4WRZE valve widely used in various industrial and mechanical hydraulic equipment, meeting the demand for precise hydraulic control in industrial automation and mechanical equipment.
The characteristics of Bosch Rexroth 4WRZE valve are mainly reflected in its pilot design and integrated amplifier board. The following are the main features of Rexroth proportional valve 4WRZE:
1), Pilot operated design. Rexroth 4WRZE is a pilot operated directional valve activated by a proportional solenoid. This design enables efficient control of the direction of oil flow. The leading design also provides better stability and response performance, meeting the requirements of high-precision control.
2), Integrated amplifier board. An integrated amplifier board with voltage or current input for Rexroth valve 4WRZE. This integrated design simplifies the system structure, improves overall reliability, and is also easy to install and maintain.
3), High precision and stability. Rexroth 4WRZE prop.-valve is controlled through a proportional electromagnet, with a central thread and replaceable coil, which ensure its high precision and stability of control. Whether it is controlling the direction or size of flow, it can achieve very precise control.
4), Emergency manual operation function. Rexroth 4WRZE proportional valve with N9 has the function of emergency manual operation, which provides additional safety protection in case of power failure or other emergency situations.
The advantages of Rexroth 4WRZE include:
High precision control: This model adopts advanced control algorithms, which can achieve high-precision and high response control, meeting the needs of various complex applications.
Energy saving and environmental protection: The 4WRZE series adopts an efficient hydraulic system and energy-saving technology, which can significantly reduce energy consumption and reduce the impact on the environment.
High reliability: This model has undergone strict quality control and durability testing, and has high reliability and stability, ensuring long-term stable operation.
Bosch Rexroth 4WRZE also has drawbacks, such as high cost--compared to similar products, Rexroth 4WRZE has a higher price, which may increase the cost burden on users; High difficulty in maintenance--Due to its high precision and complexity, professional technical personnel and equipment may be required during maintenance, which increases the difficulty and cost of maintenance.
In terms of usage, Rexroth 4WRZE series proportional valves are widely used in various industrial fields that require high-precision and high response control due to their excellent performance, such as, Machine tool industry: Used for feed systems of CNC machine tools, machining centers, and other equipment to achieve high-precision position control; Plastic machinery: Used as a hydraulic system for equipment such as plastic injection molding machines and extruders, achieving precise control of pressure and flow; Metallurgical industry: Hydraulic systems used in metallurgical equipment, such as blast furnaces, continuous casting machines, etc., achieve high-precision and high response control.
The above are only some typical application fields. In fact, Bosch Rexroth 4WRZE servo valves have a very wide range of applications, covering almost all fields that require high-precision hydraulic control. Hydraulic systems applicable to the following industries or equipment: metallurgy, oil fields, power plants, cement plants, mining machinery, steel plants, ships, engineering machinery, petrochemical, maritime engineering, paper mills, wood processing machinery, rubber processing and manufacturing, grate coolers, thin oil stations, vertical mill hydraulic systems, rollers, bulldozers, cranes, loaders, concrete pump trucks, excavators, machine tools, injection molding machines, blow molding machines, presses, drilling machines.
Rexroth valve 4WRZE Features
- Pilot operated, 2-stage proportional directional valve with integrated electronics (OBE) with type 4WRZE
- Control of flow direction and size
- Operation by means of proportional solenoids with central thread and detachable coil
- For subplate mounting: Porting pattern according to ISO 4401
- Manual override, optional
- Spring-centered control spool
- Control electronics: Type .WRZE… Integrated electronics (OBE) with voltage or current input (A1 and/or F1); Type .WRZ… Digital or analog amplifier in Euro-card format; Analog amplifier in modular design
