Bosch Rexroth | 4WRKE25E350L-3X6EG24EK31A1D3M
4WRKE25E350L-3X/6EG24EK31/A1D3M
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The 4WRKE25E350L-3X/6EG24EK31/A1D3M is a directional valve produced by Bosch Rexroth for the 4WRKE Directional Valves series, intended to meter hydraulic flow and pressure in automated machinery. Its nominal size of 25 defines the port geometry for medium-capacity manifolds, while a nominal flow of 350 L/min at a 10 bar differential delivers sufficient volume for large cylinders. The unit tolerates up to 350 bar on ports P, A, and B so it can work in high-pressure circuits. Command signals enter through a ±10 V analogue interface, and the same ±10 V range is provided as an actual value output for feedback control. A linear characteristic curve, marked by code L, ensures proportional flow relative to spool position. A 24 V DC supply powers the onboard electronics, and spool symbol E indicates the internal flow paths that switch during operation.
An internal pilot oil supply eliminates extra hoses, whereas pilot oil is drained externally to avoid undesirable back-pressure. Electrical connection is made with a DIN EN 175201-804 connector that standardizes pin layout for fast installation. The signal type is analogue, allowing direct compatibility with common proportional amplifiers. NBR seals withstand typical hydraulic fluids and retain their properties over long service intervals. An IP65 protection rating shields the enclosure from dust and water jets, enabling use on exposed equipment. The valve admits a maximum flow of 870 L/min during transients such as rapid actuator movement. A weight of 16.8 kg must be supported by the manifold or mounting plate when integrating the valve into a system.
Technical Specifications
Actual Value Output
±10 V
Characteristic Curve
L (Linear)
Command/actual Interface
±10 V
Connector Standard
DIN EN 175201-804
Flow, Max Permissible
870 L/min
Max Operating Pressure (p, A, B)
350 bar
Nominal Flow
350 L/min (Δp 10 bar)
Nominal Size (ng)
25
Pilot Oil Drain
External
Pilot Oil Supply
Internal
Seals
NBR
Signal Type
Analogue
Spool Symbol
E
Supply Voltage
24 V DC
Valve Protection
IP65
Weight
16.8 kg
1620 Old Apex Road
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