Bosch Rexroth | 4WRZE10W6-85-7X6EG24N9ETK31A1D3V
4WRZE10W6-85-7X/6EG24N9ETK31/A1D3V
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The 4WRZE10W6-85-7X/6EG24N9ETK31/A1D3V valve is manufactured by Bosch Rexroth and belongs to the WRZ Proportional Directional Valves series. It regulates flow and direction in hydraulic automation circuits by adjusting spool position in response to an analog command. A nominal flow of 85 l/min at a 10 bar pressure drop allows the main stage to feed actuators with moderate volume while maintaining control accuracy. The main valve withstands operating pressures up to 315 bar so it can be installed in high-pressure systems without external pressure reducers. Its porting pattern follows ISO 4401-05-05-0-94, enabling direct mounting on standardized subplates. The pilot stage is designated size 6, which matches common pilot manifolds and reduces response time. Internal pilot supply and drain lines remove the need for external pilot piping, simplifying installation. The spool driver accepts a ±10 V command signal, allowing direct interface with motion controllers or PLC analog outputs. Electronic sections run from a 24 V DC supply and draw a continuous 1.8 A, indicating the steady power requirement for normal operation. A 3 A power pulse current is tolerated during rapid spool shifts, preventing voltage sag when dynamic changes are requested.
Tank return pressure may reach 30 bar at port T, so back-pressure accumulators must be sized accordingly. The coil winding is rated for temperatures up to 150 °C, protecting insulation during prolonged duty cycles. Electrical connection is made with a DIN EN 175201-804 plug, giving quick interchangeability with other field devices. The hydraulic section is designed for mineral oil fluids of type HL or HLP per DIN 51524, supporting common industrial oils. FKM seals are fitted to resist heat and oil additives and maintain leakage control. The required cleanliness for the main stage is ISO 4406 20/18/15, whereas the pilot stage needs cleaner fluid at ISO 4406 18/16/13, ensuring precise operation of the smaller orifices. The assembled valve weighs 8.0 kg in size 10, a factor to consider when selecting mounting brackets or robotics for installation.
Technical Specifications
Cleanliness Class (main Valve)
ISO 4406 20/18/15
Cleanliness Class (pilot Valve)
ISO 4406 18/16/13
Command Input (voltage)
+/- 10 V
Current Consumption (obe Imax)
1.8 A
Electrical Connector
DIN EN 175201-804
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Max Coil Temperature
150 C
Max Operating Pressure (main Valve)
315 bar
Max Return Pressure (port T Internal)
30 bar
Nominal Flow (10 Bar Delta P)
85 l/min
Pilot Supply/drain
Internal/Internal
Pilot Valve Size
6
Porting Pattern
ISO 4401-05-05-0-94
Power Pulse Current
3 A
Seal Material
FKM
Supply Voltage
24 V DC
Weight (size 10)
8.0 kg
1620 Old Apex Road
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