Bosch Rexroth | 4WRLE25WZ-350SJ-3XG24TK0A1M
4WRLE25WZ-350SJ-3X/G24TK0/A1M
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The 4WRLE25WZ-350SJ-3X/G24TK0/A1M valve is a proportional directional control unit produced by Bosch Rexroth within the 4WRL Solenoid Valves series. It regulates hydraulic flow in automation circuits that need fast response and precise metering. The design follows the ISO 4401-08-08-0-05 mounting pattern so it seats on a standard NG25 manifold interface. Control electronics accept a ±10 V command signal, and the input impedance is 100 kΩ to avoid excessive load on the upstream controller. Coil supply is 24 V DC, drawing the reference power needed to drive the spool. At a rated flow of 350 l/min the valve maintains stable behavior, yet it can pass up to 1250 l/min when fully stroked. Spool geometry introduces a 5 % overlap jump to improve centering before modulation begins, and the step from 0 to 100 % opening at 100 bar occurs in 80 ms.
Reliable operation is sustained with a minimum pilot pressure of 10 bar, guaranteeing that the internal pilot stage remains functional under light system loads. Port X can be exposed to as much as 280 bar, while back-pressure at ports T and Y must not exceed 250 bar. Continuous cycling is allowed because the solenoid is rated for a 100 % relative duty cycle, and the maximum electrical power consumption is 40 VA. The enclosure carries an IP65 protection class, shielding the coil and connector against dust and low-pressure water jets when the mating plug is fitted. Overall mass is 19 kg, an important factor for manifold support structures. These specifications define a valve that balances high flow capability with tight response for automated presses, injection machines, and similar hydraulic equipment.
Technical Specifications
Actuating Time (0–100%, X=100 Bar)
80 ms
Command Input (a1)
±10 V
Input Impedance
100 kΩ
Max Power Consumption
40 VA
Max Pressure (port T, Y)
250 bar
Maximum Flow
1250 l/min
Minimum Pilot Pressure
10 bar
Mounting Pattern
ISO 4401-08-08-0-05
Nominal Size
NG25
Overlap Jump
5%
Port X Max Pressure
280 bar
Protection Class
IP65
Rated Flow
350 l/min
Relative Duty Cycle
100%
Supply Voltage
24 VDC
Weight
19 kg
1620 Old Apex Road
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