Bosch Rexroth | 4WRZE10W6B85-7X6EG24N9EK31A1D3V
4WRZE10W6B85-7X/6EG24N9EK31/A1D3V
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The 4WRZE10W6B85-7X/6EG24N9EK31/A1D3V proportional directional valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and modulates flow and pressure in automated hydraulic circuits. A nominal size of 10 establishes the gallery dimensions suitable for medium-capacity actuators, while a nominal flow of 85 l/min at a 10 bar differential provides predictable volume control for cylinders and motors. The valve tolerates a main line pressure of 315 bar, and the same 315 bar limit applies at port T when an external drain is used, so system designers can route tank lines without separate relief devices. Port Y is limited to 30 bar, which protects the pilot stage from overloading. An ISO 4401-05-05-0-94 mounting interface aligns the ports with standard subplates for quick replacement. Electronic control requires a 24 V DC supply, and the ±10 V command signal permits symmetrical spool positioning for bidirectional flow regulation.
The valve draws a maximum of 1.8 A, enabling drive cards to size their power stages without excessive headroom. A DIN EN 175201-804 (K31) connector simplifies electrical hookup and offers keyed alignment to prevent wiring errors. Pilot oil is supplied internally, reducing external plumbing, while the drain is routed externally through port Y so back pressure does not influence the pilot spool. An integrated D3 pressure-reducing valve stabilizes pilot pressure when the main line fluctuates, maintaining consistent control accuracy. The IP65 protection class guards the enclosure against dust ingress and low-pressure water jets, making the unit suitable for machine frames exposed to splash. FKM seals withstand common hydraulic oils and elevated temperatures, extending service intervals. The assembly weighs 8.0 kg, allowing one person to mount it onto a manifold without lifting equipment.
Technical Specifications
Command Signal
±10 V (A1)
Current Consumption (max)
1.8 A
Electrical Connection
DIN EN 175201-804 (K31)
Max Main Pressure
315 bar
Mounting Interface
ISO 4401-05-05-0-94
Nominal Flow
85 l/min (Δp 10 bar)
Nominal Size
10
Pilot Drain
External (Port Y)
Pilot Supply
Internal
Port T Max Pressure (ext. Drain)
315 bar
Port Y Max Pressure
30 bar
Pressure Reducing Valve
D3
Protection Class
IP65
Seal Material
FKM
Supply Voltage
24 VDC
Weight
8.0 kg
1620 Old Apex Road
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