Bosch Rexroth | 4WRZ10EA85-7X6EG24N9EK4D3M
4WRZ10EA85-7X/6EG24N9EK4/D3M
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The 4WRZ10EA85-7X/6EG24N9EK4/D3M belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and serves to meter flow and set direction in automated hydraulic circuits. It is built to nominal size 10 and uses spool symbol EA to define the flow paths selected by the control signal. A proportional, detachable coil solenoid shifts the spool, and the 24 V DC supply voltage enables fine position control across the travel range. Nominal flow is 85 l/min at a 10 bar pressure drop, giving designers a reference point for sizing pumps and actuators. A DIN EN 175301-803 plug provides the electrical connection, allowing straightforward field wiring, while a concealed manual override lets maintenance staff move the spool when power is unavailable.
The valve handles main-stage operating pressures up to 315 bar and accepts the same limit on the return port, so back-pressure in external drain layouts does not reduce capability. Port Y is limited to 30 bar to protect the pilot stage. Maximum flow through the main path reaches 170 l/min, allowing the unit to control larger cylinders or motors when needed. Internal or external pilot oil supply and drain can be selected to match circuit requirements, and an integrated pressure-reducing valve type ZDR 6 DP0-4X/40YM-W80 stabilizes pilot pressure. Mineral oil of the HL or HLP class per DIN 51524 is the approved fluid, and service temperature may reach 80 °C without derating. The assembly weighs 7.8 kg, which influences mounting bracket design and handling procedures.
Technical Specifications
Electrical Connection
DIN EN 175301-803 Plug
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Manual Override
Concealed
Max Flow (main Valve)
170 l/min
Max Fluid Temperature
80 °C
Max Operating Pressure (main)
315 bar
Max Port Y Pressure
30 bar
Max Return Port Pressure (t, Ext Drain)
315 bar
Nominal Flow (Δp=10 Bar)
85 l/min
Nominal Size
10
Pilot Oil Supply/drain
Internal/External
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Solenoid
Proportional, Detachable Coil
Spool Symbol
EA
Supply Voltage
24 V DC
Weight
7.8 kg
1620 Old Apex Road
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