Bosch Rexroth | 4WRKE25W8-220L-3X6EG24EK31A1D3M
4WRKE25W8-220L-3X/6EG24EK31/A1D3M
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The 4WRKE25W8-220L-3X/6EG24EK31/A1D3M valve, produced by Bosch Rexroth for the 4WRKE Directional Valves series, modulates hydraulic flow and direction in automated actuator circuits. It accepts a 24 VDC supply voltage, and the electronics draw up to 1.5 A, allowing direct connection to common power modules. The maximum power requirement is 72 W, so thermal dissipation planning is straightforward. A DIN EN 175201-804 connector provides the electrical interface, and the command or feedback signals are handled through a ±10 V analog interface for proportional control. The unit is built to IP65, protecting the coils and electronics against dust and water jets, while a weight of 16.8 kg must be considered for manifold or sub-plate mounting. Hydraulic characteristics include a nominal size of 25, a nominal flow rating of 220 L/min for steady operation, and the main ports withstand operating pressures up to 350 bar for high-pressure systems.
Peak flow capability reaches 870 L/min, enabling rapid cylinder movement during large step changes. The pilot stage demands 11.7 L/min at 315 bar to shift the main spool fully, and an external pilot drain can tolerate pressures up to 250 bar, which simplifies circuit return routing. Dynamic behavior is aided by a maximum hysteresis of 1 %, limiting deviation between command and actual flow, and a response sensitivity not exceeding 0.5 % permits small signal adjustments. During fast reversals the coil may experience impulse currents up to 3 A without damage, supporting aggressive valve tuning. Together these characteristics let the valve execute precise, repeatable direction changes in high-pressure hydraulic automation.
Technical Specifications
Command/actual Interface
±10 V
Electrical Connection
DIN EN 175201-804
Hysteresis (max)
1%
Impulse Load (max)
3 A
Main Valve Flow (max)
870 L/min
Max Operating Pressure (p,a,b)
350 bar
Nominal Flow
220 L/min
Nominal Size
25
Pilot Drain Pressure (external, Max)
250 bar
Pilot Oil Flow (0–100% Step, 315 Bar)
11.7 L/min
Power (max)
72 W
Response Sensitivity (max)
0.5%
Supply Current (max)
1.5 A
Supply Voltage
24 VDC
Valve Protection
IP65
Weight
16.8 kg
1620 Old Apex Road
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