Bosch Rexroth | 4WRZE10W6-85-7X6EG24N9K31A1D3M
4WRZE10W6-85-7X/6EG24N9K31/A1D3M
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The 4WRZE10W6-85-7X/6EG24N9K31/A1D3M valve belongs to the WRZ Proportional Directional Valves series produced by Bosch Rexroth. It is designed to meter hydraulic flow and direct pressurized fluid in automated motion systems. Its ISO 4401 subplate mounting interface allows quick installation on common manifold blocks used in industrial power units. A nominal flow of 85 l/min at a 10 bar pressure drop establishes standard throughput for servo loop design, while a maximum operating pressure of 315 bar lets the unit work in high-pressure circuits. The integrated electronics accept a ±10 V command value input, and the amplifier is powered from a 24 VDC supply so it connects directly to typical machine controllers. Coil energization peaks at 1.8 A, and the coil resistance of 4.8 Ω at 20 °C defines the steady-state current relationship. Continuous duty is supported by a 100 % duty cycle rating, and a DIN EN 175201-804 electrical connector provides consistent plug-in wiring.
The hydraulic stage can pass up to 170 l/min through the main valve during full stroke, accommodating rapid actuator movement when the machine demands peak flow. Control precision is maintained with a maximum hysteresis of 6 %, limiting position deviation between increasing and decreasing command signals; this characteristic supports repeatable spool positioning during closed-loop control. The coil may reach 150 °C before derating, which sets the allowable ambient and fluid temperature envelope. Pilot functionality relies on an external supply and drain arrangement, ensuring that pilot pressures remain stable regardless of main line fluctuations; under a 0–100 % step the pilot oil flow is 3.5 l/min and the displaced pilot volume is 1.7 cm³. These values allow quick spool shifts without imposing excessive load on the pilot circuit. The assembled unit weighs 8.0 kg, a consideration for mounting brackets and service handling.
Technical Specifications
Coil Resistance (20 °c)
4.8 Ω
Command Value Input
±10 V
Duty Cycle
100%
Electrical Connection
DIN EN 175201-804
Electronics Current (max)
1.8 A
Electronics Supply Voltage
24 VDC
Hysteresis (max)
6%
Max Coil Temperature
150 °C
Max Flow (main Valve)
170 l/min
Max Operating Pressure (main)
315 bar
Mounting Interface
ISO 4401 Subplate
Nominal Flow (Δp=10 Bar)
85 l/min
Pilot Oil Flow (step 0–100%)
3.5 l/min
Pilot Oil Supply/drain
External/External
Pilot Oil Volume (0–100%)
1.7 cm³
Weight
8.0 kg
1620 Old Apex Road
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