Bosch Rexroth | 4WRZ10W6-85-7X6EG24N9EK4V
4WRZ10W6-85-7X/6EG24N9EK4/V
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The 4WRZ10W6-85-7X/6EG24N9EK4/V valve belongs to the WRZ Proportional Directional Valves series produced by Bosch Rexroth for hydraulic automation systems that require controlled flow and precise load regulation. It mounts on subplates prepared to the ISO 4401-05-05-0-94 pattern so integration with standardized manifolds is straightforward. When the pressure drop across the metering edges is 10 bar, the valve passes a nominal flow of 85 l/min, while the main stage can reach 170 l/min at wider openings. The unit withstands a main port pressure of 315 bar, and the external drain at port T is rated for the same 315 bar; port Y is limited to 30 bar to protect the pilot section. An IP65 enclosure guards the coil and electronics against dust and water jets, and the subplate-mounted assembly weighs 7.8 kg.
The electrical section operates from a DC supply and remains energized continuously thanks to a 100 percent duty cycle. Power enters through a DIN EN 175301-803 plug, where the solenoid may draw up to 1.5 A; at 20 °C the winding shows a resistance of 4.8 Ω, and it tolerates coil temperatures up to 150 °C before derating. Command accuracy is supported by hysteresis not exceeding 6 percent, and the center A/B-to-T flow deviation stays below 2 percent of nominal to keep neutral positioning stable. These electrical and mechanical limits provide proportional metering performance that fits servo-hydraulic circuits without additional cooling or duty restrictions.
Technical Specifications
Center A/b-to-t Connection
< 2% Nominal
Coil Resistance (20 °c)
4.8 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803 Plug
Hysteresis
≤ 6%
Max Coil Temperature
150 °C
Max Main Valve Flow
170 l/min
Max Operating Pressure (main)
315 bar
Max Solenoid Current
1.5 A
Mounting Pattern
ISO 4401-05-05-0-94
Nominal Flow (Δp 10 Bar)
85 l/min
Port T Pressure (external Drain)
315 bar
Port Y Pressure
30 bar
Type Of Protection
IP65
Voltage Type
DC
Weight (subplate Mounted)
7.8 kg
1620 Old Apex Road
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