Bosch Rexroth | 4WRL25W4-350S-3XG24Z4M
4WRL25W4-350S-3X/G24Z4/M
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The 4WRL25W4-350S-3X/G24Z4/M valve is built by Bosch Rexroth within the 4WRL Solenoid Valves series. It is designed to modulate hydraulic flow and pressure in automated motion circuits. The unit is supplied for subplate mounting and follows the ISO 4401-08-07-0-94 interface, simplifying replacement in standardized manifolds. With a nominal size of 25 it accommodates medium to large flows while maintaining predictable response. Electrical actuation is provided by a 24 V DC solenoid that connects through a DIN 43650/ISO 4400 plug with two power pins and protective earth. A Pg7 four-pin socket links the internal position transducer to external electronics for closed-loop control. NBR seals separate hydraulic and ambient environments, and reliable operation is maintained between −20 °C and +50 °C.
Hydraulic limits are defined by a maximum pressure of 350 bar at ports P, A, and B, and 250 bar at ports T, X, and Y. The pilot stage accepts control oil between 10 bar and 250 bar and consumes 24 l/min during normal regulation. The main stage passes up to 900 l/min, allowing the valve to serve large actuators without creating excessive pressure loss. Overall mass is 18 kg, so lifting aids may be needed when installing the assembly into machine frames. These characteristics establish the operating envelope for motion control loops that require high flow, stable pilot control, and robust pressure capability.
Technical Specifications
Ambient Temperature Max
+50 °C
Ambient Temperature Min
-20 °C
Control Oil Pressure Max
250 bar
Control Oil Pressure Min
10 bar
Max Flow (qmax)
900 l/min
Max Pressure (p, A, B)
350 bar
Max Pressure (t, X, Y)
250 bar
Mounting Interface
ISO 4401-08-07-0-94
Mounting Type
Subplate Mounting
Nominal Size (ng)
25
Pilot Oil Flow (qn)
24 l/min
Position Transducer Connector
Pg7 (4P)
Seal Material
NBR
Solenoid Connector
DIN 43650/ISO 4400 (2P+PE)
Supply Voltage
24 V DC
Weight
18 kg
1620 Old Apex Road
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