Product Overview
The Rexroth 4WRZE 10 W8-85-73/6EG24N9EK31/F1D3M (Material Number R900750556) is a high-response, pilot-operated proportional directional valve from the Rexroth 4WRZE series. It is designed to control the direction and magnitude of flow in industrial hydraulic systems in proportion to an electrical input signal. The valve utilizes a two-stage design in which a proportional pilot valve with a wet-pin DC solenoid actuates the main spool of a high-flow second stage, delivering smooth, infinitely variable directional control with minimal hysteresis. With a nominal size of NG10 and a rated flow of 85 L/min at a 10 bar pressure drop per land, this valve is engineered for precise velocity, position, and force control in demanding closed-loop and open-loop applications. The integrated on-board electronics (OBE) with a central electrical connection simplify wiring and improve signal integrity, making this valve a direct-fit solution for modern industrial motion control systems.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (Pilot-Operated, Two-Stage) |
| Model Designation | 4WRZE 10 W8-85-73/6EG24N9EK31/F1D3M |
| Material Number | R900750556 |
| Nominal Size | NG10 (Size 10) |
| Spool Type / Flow Characteristic | W8 (progressive flow characteristic, symmetrical) |
| Rated Flow | 85 L/min per land at Δp = 10 bar |
| Operating Pressure | Up to 315 bar (main stage, standard industrial grade) |
| Pilot Pressure | Internal or external pilot supply (per configuration) |
| Actuation | Proportional solenoid, wet-pin DC design |
| Solenoid Voltage | 24 V DC (EG24) |
| Electrical Interface | Central connection with integrated on-board electronics (OBE) |
| Mounting & Connection | Subplate mounting |
Engineering Features & Advantages
- Precision Performance: The integrated proportional solenoid, wet-pin DC design ensures precise, repeatable control with low hysteresis and stable performance across the full working range.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth standards, allowing straightforward retrofit into existing hydraulic systems without rework.
- Rated Capability: Rated for pressure ratings up to 315 bar and flow rates up to 85 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
The integrated on-board electronics (OBE) with a central electrical connection simplify wiring and improve signal integrity, making this valve a direct-fit solution for modern industrial motion control systems.
PRODUCT IMAGES



Rexroth 4WRZE 10 W8-85-73/6EG24N9EK31/F1D3M / R900750556 Proportional Directional Valve
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Shop the genuine REXROTH 4WRZE 10 W8-85-73/6EG24N9EK31/F1D3M / R900750556 Solenoid Directional Valve. This Germany-made 24V DC hydraulic component features a high-performance spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.