Bosch Rexroth | 4WRZ10W6-85-7X6EG24N9ETK4V
4WRZ10W6-85-7X/6EG24N9ETK4/V
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The 4WRZ10W6-85-7X/6EG24N9ETK4/V valve belongs to the WRZ Proportional Directional Valves series and is manufactured by Bosch Rexroth for closed-loop hydraulic automation where flow and direction are modulated electrically. It is built to nominal size 10, so its port pattern fits size-10 subplates, and it uses a W6 spool to generate the required metering edges for bidirectional cylinder control. At a differential pressure of 10 bar the main stage passes 85 l/min, while a maximum operating pressure of 315 bar permits use in high-pressure systems. The solenoid is energized with 24 V DC, and the drive electronics must limit current to 1.5 A. A cold coil resistance of 4.8 Ω establishes the initial electrical load, and wiring is completed through a DIN EN 175301-803 connector that provides quick coupling during service.
A fluid temperature window from −20 °C to +80 °C lets the valve operate in outdoor or heated installations, and acceptable viscosity from 20 to 380 mm²/s keeps spool clearance within design tolerances. Closed-loop accuracy is helped by hysteresis not exceeding 6 %, reducing position error across repeated commands. Both pilot oil supply and pilot oil drain are internal, and the pilot stage draws 3.5 l/min when moved from zero to full signal. The internal drain path may see up to 30 bar at port T without affecting performance, simplifying tank routing on compact manifolds. An IP65 protection rating shields the coil and connector against dust ingress and water jets, supporting installation on machines that face routine washdown or airborne contamination.
Technical Specifications
Coil Resistance (cold, 20 °c)
4.8 Ω
Electrical Connector
DIN EN 175301-803
Hydraulic Fluid Temperature Range
-20 to +80 °C
Hysteresis
≤ 6%
Max Current
1.5 A
Max Operating Pressure (main Valve)
315 bar
Nominal Flow (Δp = 10 Bar)
85 l/min
Nominal Size
10
Pilot Oil Drain
Internal
Pilot Oil Flow (0 To 100%)
3.5 l/min
Pilot Oil Supply
Internal
Port T Pressure (internal Drain)
30 bar
Spool Type
W6
Supply Voltage
24 V DC
Type Of Protection
IP65
Viscosity Range
20 to 380 mm²/s
1620 Old Apex Road
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