Bosch Rexroth | 4WRTE25V350L-4X6EG24K31A5M
4WRTE25V350L-4X/6EG24K31/A5M
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The 4WRTE25V350L-4X/6EG24K31/A5M valve belongs to the 4WRTE Directional Control Valves series from Bosch Rexroth and is intended for precise hydraulic automation where fast directional changes and stable flow are required. It is powered from a 24 V DC supply, with the electronics remaining functional between 18 V DC and 35 V DC so the unit tolerates common bus variations. Maximum current consumption is 1.6 A, and overall electrical draw is limited to 72 VA, allowing standard power supplies to feed the amplifier. During operation the valve passes a rated flow of 350 l/min when the differential pressure across a control edge is 5 bar, while a separate pilot oil path needs 20 l/min to drive the main spool. Hydraulic circuits can be run at working pressures up to 350 bar, matching heavy-duty cylinders and motors.
The electrical interface accepts a ±10 V command signal (A5), letting motion controllers set spool position directly. Control accuracy is supported by a response sensitivity no greater than 0.05 % and a hysteresis that stays below 0.1 %, minimizing position error during steady operation. An impulse current of 2.7 A is drawn briefly when the solenoid energizes, so the upstream supply must handle this peak. Return flow routed externally can withstand pressures up to 250 bar, giving designers freedom in tank-line layouts. The housing is sealed to IP65, permitting installation in wash-down or dusty areas, and a 4 A time-lag fuse is specified to protect the valve electronics against overcurrent. Command wiring should maintain a residual ripple under 2.5 Vpp to keep the internal amplifier within its linear range.
Technical Specifications
Current Consumption (max)
1.6 A
Electrical Interface
±10 V (A5)
Hysteresis
≤ 0.1%
Impulse Current
2.7 A
Max Return Flow Pressure (external)
250 bar
Maximum Operating Pressure
350 bar
Maximum Power Consumption
72 VA
Pilot Oil Flow
20 l/min
Protection Class
IP65
Rated Flow
350 l/min (Δp=5 bar/control edge)
Required Fuse
4 A (time-lag)
Residual Ripple (max)
2.5 Vpp
Response Sensitivity
≤ 0.05%
Supply Voltage
24 V DC
Supply Voltage Lower Limit
18 V DC
Supply Voltage Upper Limit
35 V DC
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