Bosch Rexroth | 4WRZ10W8-85-7X6EG24N9ETK4M
4WRZ10W8-85-7X/6EG24N9ETK4/M
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The 4WRZ10W8-85-7X/6EG24N9ETK4/M is manufactured by Bosch Rexroth and belongs to the WRZ Proportional Directional Valves series, where it meters and routes hydraulic flow in automated machinery. The valve is built in size 10 and mounts on subplates matching ISO 4401-05-05-0-94, letting installers integrate it quickly. At a 10 bar differential it passes 85 l/min, and the main stage withstands 315 bar operating pressure. Pilot supply and drain are internal, with each 0→100 percent command step needing 3.5 l/min of pilot oil and displacing 1.7 cm³. Mineral oil of the HL or HLP types under DIN 51524 serves as the pressure medium, and NBR seals contain it. A concealed manual override (N9) provides direct spool movement when electrical power is unavailable.
The electromagnetic section works at a 100 percent duty cycle and is powered by 24 V DC through a DIN EN 175301-803 plug, while its winding tolerates temperatures up to 150 °C. Return flow at port T can be as high as 30 bar, allowing use in circuits with moderate back pressure. The complete assembly weighs 7.8 kg, so one person can position it during manifold service. These electrical and hydraulic limits support stable proportional control across the full command range.
Technical Specifications
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803 Plug
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Manual Override
Concealed (N9)
Max Coil Temperature
150 °C
Max Operating Pressure (main)
315 bar
Max Return Pressure (port T, Internal)
30 bar
Mounting Pattern
ISO 4401-05-05-0-94
Nominal Flow (Δp=10 Bar)
85 l/min
Pilot Oil Flow (0→100% Step)
3.5 l/min
Pilot Oil Volume (0→100% Step)
1.7 cm³
Pilot Supply/drain
Internal/Internal (ET)
Seal Material
NBR
Supply Voltage
24 V DC
Valve Size
10
Weight
7.8 kg
1620 Old Apex Road
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