Bosch Rexroth | 4WRZ10E85-7X6EG24N9EK4D3V
4WRZ10E85-7X/6EG24N9EK4/D3V
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The 4WRZ10E85-7X/6EG24N9EK4/D3V valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and modulates flow and pressure in hydraulic automation systems. It is energized with a 24 V DC supply so the solenoids receive stable power for precise spool positioning, and the DIN EN 175301-803 connector provides a standardized electrical interface for field wiring. A nominal flow of 85 l/min at a 10 bar pressure drop suits medium-capacity actuators, while the main stage tolerates operating pressures up to 315 bar to serve high-pressure circuits. Subplate mounting is supported by the ISO 4401-05-05-0-94 interface, and the assembled unit weighs 7.8 kg, a consideration for manifold design and handling. A concealed manual override permits local actuation during commissioning or power loss, and FKM seals resist swelling in common hydraulic oils to maintain leak-free service under temperature changes.
The valve uses mineral oil classified as HL or HLP as its working fluid, and the internal pilot oil supply eliminates the need for an external feed line. Pilot oil is exhausted externally, limiting heat buildup in the main body; the pilot drain circuit must stay below 30 bar to protect the control stage. Flow through the pilot section reaches 3.5 l/min when the command signal rises from 0 to 100 percent, and the associated pilot oil volume is 1.7 cm³, factors that influence response time and stability. When fully shifted, the main ports pass up to 170 l/min to drive large cylinders, and the t port can accept return flow pressures as high as 315 bar without jeopardizing spool centering. Together, these characteristics allow the valve to regulate motion accurately in presses, plastic machinery, and other closed-loop hydraulic drives.
Technical Specifications
Electrical Connection
DIN EN 175301-803
Hydraulic Fluid
Mineral Oil (HL, HLP)
Manual Override
Concealed
Max Main Valve Flow
170 l/min
Max Operating Pressure (main)
315 bar
Max Pilot Drain Pressure (port Y)
30 bar
Max Return Flow Pressure (t Port)
315 bar
Mounting Interface
ISO 4401-05-05-0-94
Nominal Flow (10 Bar ∆p)
85 l/min
Pilot Oil Drain
External
Pilot Oil Flow (0→100%)
3.5 l/min
Pilot Oil Supply
Internal
Pilot Oil Volume (0→100%)
1.7 cm³
Seal Material
FKM
Supply Voltage
24 V DC
Weight (subplate Mounting)
7.8 kg
1620 Old Apex Road
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