Bosch Rexroth | 4WRZE25E220-7X6EG24N9ETK31A1D3M
4WRZE25E220-7X/6EG24N9ETK31/A1D3M
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The 4WRZE25E220-7X/6EG24N9ETK31/A1D3M proportional directional valve by Bosch Rexroth belongs to the WRZ Proportional Directional Valves series. It meters hydraulic flow to actuators and steers oil in automated systems. Nominal size 25 defines the port dimensions and allows the valve body to pass a nominal flow of 220 l/min at a 10 bar differential, matching medium-capacity circuits. Spool type E shapes the control edges to achieve linear flow gain. Ports P, a and b can be pressurized up to 350 bar, while the internal drain on port T is limited to 30 bar, ensuring safe return line operation. The port pattern follows ISO 4401-08-07-0-94 so the unit mounts on standardized sub-plates. A 3DREP 6 pilot valve provides the pilot stage and receives oil from the internal supply with an internal drain path, which simplifies plumbing and keeps external lines to a minimum.
The electronics use a 24 V DC supply voltage to energize the coils, and the command input accepts a ±10 V signal so servo amplifiers can issue symmetrical control commands. Current consumption peaks at 1.8 A, defining the required capacity of the drive card. A DIN EN 175201-804 connector delivers power and feedback through a widely available plug style. Coil insulation tolerates temperatures up to 150 °C, preventing damage during prolonged duty at elevated ambient temperatures. The integrated pressure reducing valve, model ZDR 6 DP0-4X/40YM-W80, stabilizes pilot pressure so spool position remains accurate under load changes. NBR seal material resists common hydraulic oils and maintains leak-tight joints. The assembly weighs 18.4 kg, a factor to consider for manifold support and service handling.
Technical Specifications
Command Input (voltage)
±10 V
Electrical Connector
DIN EN 175201-804
Max Coil Temperature
150 °C
Max Current Consumption
1.8 A
Max Operating Pressure (ports P,a,b)
350 bar
Max T Port Pressure (internal Drain)
30 bar
Nominal Flow (∆p 10 Bar)
220 l/min
Nominal Size
25
Pilot Oil Supply/drain
Internal/Internal
Pilot Valve Type
3DREP 6
Port Pattern
ISO 4401-08-07-0-94
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Seal Material
NBR
Spool Type
E
Supply Voltage
24 V DC
Weight
18.4 kg
1620 Old Apex Road
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