Bosch Rexroth | 4WRLE25EZ350SJ-3XG24K0A1M
4WRLE25EZ350SJ-3X/G24K0/A1M
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The 4WRLE25EZ350SJ-3X/G24K0/A1M valve belongs to the 4WRL Solenoid Valves series from Bosch Rexroth and provides proportional control for hydraulic automation circuits. It uses a nominal size of NG25 to match manifolds that carry medium-volume process flows, while a supply voltage of 24 VDC energizes the integrated electronics. Maximum power consumption is limited to 40 VA so cabinet transformers can be sized modestly. A ±10 V command input lets the controller set spool position with standard analog signals. The actuator reaches 0 to 100 percent stroke in 80 ms, enabling responsive pressure or speed changes in the hydraulic load. Continuous operation is supported by a 100 percent relative duty cycle that prevents thermal derating. An IP65 protection class seals the enclosure against dust and low-pressure water jets for reliable service on machinery frames. Hysteresis is held below 0.1 percent, keeping positional error tight during repetitive command cycles.
The hydraulic limits start with a maximum operating pressure of 350 bar at ports a, b, and p, allowing the valve to work in high-pressure power units. Port X tolerates up to 280 bar so the pilot line can share the main supply in compact circuits. Return ports t and y are rated for 250 bar, which accommodates back-pressure in long return lines. A minimum pilot pressure of 10 bar guarantees stable spool shifting before proportional control begins. Pilot oil flow of 7.5 L/min feeds the control stage without overloading small auxiliary pumps. An overlap jump of 5 percent defines the transition band through the null zone, assisting designers in tuning loop gains. The porting pattern follows ISO 4401-08-08-0-05 for direct mounting to standardized subplates. External fuse protection of 2.5 A time-delay (T) guards the 24 V supply wiring against short-circuit faults.
Technical Specifications
Actuating Time 0–100%
80 ms
Command Input (a1)
±10 V
Fuse Protection (external)
2.5 A (T)
Hysteresis (max)
0.1%
Max Operating Pressure (a,b,p)
350 bar
Max Port X Pressure
280 bar
Max Pressure (t,y)
250 bar
Minimum Pilot Pressure
10 bar
Nominal Size
NG25
Overlap Jump
5%
Pilot Oil Flow (e/w)
7.5 l/min
Porting Pattern
ISO 4401-08-08-0-05
Power Consumption (max)
40 VA
Protection Class
IP65
Relative Duty Cycle
100%
Supply Voltage
24 VDC
1620 Old Apex Road
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