Bosch Rexroth | 4WRZ10W8-85-7X6EG24N9K4D3V
4WRZ10W8-85-7X/6EG24N9K4/D3V
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The 4WRZ10W8-85-7X/6EG24N9K4/D3V proportional directional valve is part of the WRZ Proportional Directional Valves series from Bosch Rexroth. It directs and meters hydraulic flow in automation systems that require reproducible positioning and force. A nominal flow of 85 l/min at a 10 bar pressure drop defines the capacity of the main stage to feed actuators. The assembly tolerates up to 315 bar operating pressure so it can be installed in high-pressure circuits. A 3DREP 6 pilot valve moves the main spool, while 3.5 l/min pilot oil across the full command range provides smooth modulation. A ZDR6 DP0-4X/40YM-W80 pressure-reducing valve stabilizes the pilot supply to maintain consistent response. The ISO 4401-05-05-0-94 porting pattern simplifies stacking on standard subplates, and FKM seals contain mineral or synthetic fluids under elevated temperature. An IP65 protection rating guards the electrical section against dust ingress and low-pressure water jets encountered in industrial plants.
A coil resistance of 4.8 Ω at 20 °C determines the current drawn from the 24 V supply, and the design is intended for direct current, matching the type of voltage specified as DC. The magnetic assembly can accept up to 1.5 A so drive electronics can apply full stroke without overloading. Continuous energization is possible because the duty cycle is 100 %, and the coil insulation endures internal heating up to 150 °C to prevent thermal degradation. Connection is made through a DIN EN 175301-803 plug, allowing quick replacement during maintenance. The valve weighs 7.8 kg, enabling one-person handling during mounting yet providing enough mass to resist vibration on the manifold. These electrical and mechanical characteristics allow the valve to integrate with closed-loop motion control tasks.
Technical Specifications
Coil Resistance (20 °c)
4.8 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803
Max Coil Temperature
150 °C
Max Current
1.5 A
Max Operating Pressure
315 bar
Nominal Flow (10 Bar Δp)
85 l/min
Pilot Oil Flow (0–100%)
3.5 l/min
Pilot Valve Type
3DREP 6
Porting Pattern
ISO 4401-05-05-0-94
Pressure Reducing Valve
ZDR6 DP0-4X/40YM-W80
Seals
FKM
Supply Voltage
24 V DC
Type Of Protection
IP65
Type Of Voltage
DC
Weight
7.8 kg
1620 Old Apex Road
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