Bosch Rexroth | 4WRZ10EA85-7X6EG24N9EK4V
4WRZ10EA85-7X/6EG24N9EK4/V
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The 4WRZ10EA85-7X/6EG24N9EK4/V proportional directional valve belongs to the WRZ Proportional Directional Valves series and is manufactured by Bosch Rexroth. It modulates spool position to control flow direction and speed in hydraulic automation systems. The solenoid is powered by 24 V DC and accepts a peak current of 1.5 A to attain full stroke. Coil resistance of 4.8 Ω at 20 °C supports predictable current control by the drive electronics. A 100 % duty cycle allows the coil to remain energized continuously without enforced cooling intervals. Electrical connection is achieved through a DIN EN 175301-803 plug, simplifying field wiring. The coil can reach 150 °C without damage, which aids reliability in hot installations. An IP65 protection rating shields internal components from dust and low-pressure water jets.
The valve is produced in nominal size 10 and mounts on a manifold that conforms to ISO 4401-05-05-0-94, ensuring interchangeability with standardized subplates. At a 10-bar pressure drop the main stage delivers a nominal flow of 85 l/min, supporting medium-capacity circuits. Both the main and tank ports tolerate operating pressures up to 315 bar, so the unit suits high-pressure power packs. During a 0 to 100 % command step the pilot stage draws 3.5 l/min, giving responsive spool movement. Pilot oil can be supplied internally or externally, allowing designers to match system preferences. Mineral oil grades HL or HLP according to DIN 51524 serve as the working fluid, and FKM seals preserve leakage integrity with these oils and elevated temperatures. Together these characteristics define its role in precise hydraulic direction control.
Technical Specifications
Coil Resistance (20 °c)
4.8 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Max Coil Temperature
150 °C
Max Current
1.5 A
Max Operating Pressure (main)
315 bar
Max Tank Port Pressure
315 bar
Mounting Interface
ISO 4401-05-05-0-94
Nominal Flow (Δp=10 Bar)
85 l/min
Nominal Size
10
Pilot Oil Flow (0→100% Step)
3.5 l/min
Pilot Oil Supply/drain
Internal/External
Seals
FKM
Supply Voltage
24 V DC
Type Of Protection
IP65
1620 Old Apex Road
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