Bosch Rexroth | 4WRLE25V370M-3XG24ETK0A1M
4WRLE25V370M-3X/G24ETK0/A1M
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The 4WRLE25V370M-3X/G24ETK0/A1M is a proportional solenoid valve manufactured by Bosch Rexroth for the 4WRL Solenoid Valves series. It is applied in hydraulic automation to meter flow and regulate actuator speed in medium-to-high volume circuits. The NG25 size supports systems that need up to 1250 l/min, while a v-spool zero-lap design limits leakage to 2.8 l/min at neutral. Actuation from 0 to 100 percent stroke is completed in 80 ms when the pilot pressure is held at 100 bar, enabling rapid set-point changes. Electrical control is provided through a ±10 V command signal, and the electronics present an input impedance of 100 kΩ to avoid loading the motion controller output. Valve spool position is repeatable because hysteresis stays at or below 0.1 percent. The solenoids draw power from a 24 VDC supply that is common in mobile and stationary power units.
For pressure limits, the A, B, and P ports withstand 350 bar when an external pilot stage is used, and 280 bar when the pilot supply is internal, so the designer can choose the appropriate pilot scheme for the circuit. The T and Y return paths tolerate 250 bar, and the X pilot port itself is rated for 280 bar, preventing damage during high back-pressure events. Stable operation begins once at least 10 bar pilot pressure is available, establishing sufficient force on the control spool. Mounting follows the ISO 4401-08-08-0-05 porting pattern, which aligns with standard subplates in NG25 manifolds. An IP65 housing shields the coils and position transducer from dust and water jets, while NBR seals ensure compatibility with common mineral oils. These mechanical features combine to deliver consistent performance in closed-loop hydraulic axes.
Technical Specifications
Actuating Time (0–100%, X=100 Bar)
80 ms
Command Input
±10 V (A1)
Hysteresis
≤ 0.1%
Input Impedance
100 kΩ
Max Pressure A/b/p (ext. Pilot)
350 bar
Max Pressure A/b/p (int. Pilot)
280 bar
Max Pressure T/y
250 bar
Max Pressure X
280 bar
Max Zero Flow (v Spool)
2.8 l/min
Maximum Flow
1250 l/min
Minimum Pilot Pressure
10 bar
Porting Pattern
ISO 4401-08-08-0-05
Protection Class
IP65
Seal Material
NBR (M)
Size
NG25
Supply Voltage
24 VDC
1620 Old Apex Road
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