REXROTH

4WE6D73-6X/EG24N9K4/A12 is a Bosch Rexroth direct-actuated directional spool valve identified by material number R900546257. It is a size 6 industrial hydraulic valve with Symbol D73, 24 VDC solenoid actuation and subplate mounting. This page combines the product nameplate shown in the supplied photographs with specifications verified against the official Bosch Rexroth product page.

4WE6D73-6X/EG24N9K4/A12 Rexroth valve overview

The 4WE6D73-6X/EG24N9K4/A12 controls the direction of hydraulic oil flow by shifting a spool with an electrical solenoid. Bosch Rexroth describes this product as an industrial hydraulic valve from its high-performance range for reliable switching according to the hydraulic symbol. Its direct-actuated construction is intended for directional on/off control rather than proportional flow regulation.

This version uses a four-port, two-position arrangement with Symbol D73. The rated maximum operating pressure is 350 bar and the stated maximum flow is 60 L/min. The mounting interface follows ISO 4401-03-02-0-05, allowing the valve to be evaluated for compatible size 6 subplates and manifolds.

Verified technical specifications

Model identification and supplied product photos

The nameplate photograph shows the Rexroth branding and the complete product code. The remaining views document the valve body, solenoid, connector and mounting sides. These photographs are of the available product and are used instead of older website images.

Application and selection notes

This valve may be considered for industrial hydraulic circuits that require electrically commanded directional switching at up to the published pressure and flow limits. Typical selection checks include the hydraulic symbol, port function, number of positions, voltage, connector standard, mounting pattern, fluid type and seal compatibility.

Before installation, confirm that the machine circuit matches Symbol D73 and that the pressure and flow remain within the official limits. Check the coil supply, connector wiring and protective earth connection. Fluid cleanliness, viscosity, temperature and filtration requirements should be confirmed from the applicable Bosch Rexroth data sheet and the machine design. A matching footprint does not by itself prove interchangeability with another valve.

Inspection checklist before commissioning

Inspect the valve for shipping damage, contamination, corrosion and damage to the connector or coil. Compare the complete nameplate code with the purchase record. Verify that the subplate surface is clean, flat and free of burrs, and use the correct seals and fasteners. Confirm that every port is connected according to the machine schematic before pressure is applied.

During commissioning, start at controlled pressure and observe the valve in both commanded states. Confirm that the expected actuator direction matches Symbol D73, that the solenoid shifts consistently and that there is no external leakage. Monitor oil temperature, unusual noise and pressure spikes. If the response is slow or unstable, stop and check electrical supply, contamination, flow demand and circuit pressure rather than increasing pressure beyond the published limit.

Source-backed product information

Technical values on this page were checked against the official Bosch Rexroth R900546257 product page. The supplied photos provide visual identification, while the official page is the controlling source for published performance data. For other hydraulic components, visit our industrial hydraulics product catalog.

When requesting a quotation or technical confirmation, provide the complete model and material numbers shown on the nameplate. Also include required quantity, destination, application pressure, flow, voltage and fluid. Commercial availability, delivery, warranty and certification documents should be confirmed separately for the intended order.

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