Bosch Rexroth | 4WRLEM25EZ350SJ-3XG24K0A1M
4WRLEM25EZ350SJ-3X/G24K0/A1M
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The 4WRLEM25EZ350SJ-3X/G24K0/A1M is produced by Bosch Rexroth for the 4WRL Solenoid Valves series to meter hydraulic flow in automated machinery; its nominal size is NG25 for medium-capacity circuits. It operates on a 24 VDC supply that energizes the integrated solenoid and electronics. A control reference of ±10 V drives the spool, and the associated input impedance is 100 kΩ to reduce loading on the command source. Maximum power consumption is limited to 40 VA, allowing the unit to share compact power supplies with other control hardware. A 2.5 A time-lag fuse protects the supply line from overcurrent. The enclosure carries an IP65 rating so dust and water jets do not compromise operation. An actuating time of 80 ms at 100 bar supports rapid flow changes required in closed-loop systems.
The hydraulic pilot stage needs at least 10 bar to shift the main spool, and it draws 7.5 l/min of pilot oil during operation. Combined main and pilot leakage is 0.42 l/min, which limits energy loss while maintaining lubrication. Port X withstands pressures up to 280 bar, whereas ports T and Y are rated for 250 bar. Hysteresis remains below 0.1 %, providing repeatable positioning even after multiple cycles. Response sensitivity is better than 0.05 %, so small command changes translate into proportional flow adjustments. Zero shift caused by temperature drift stays under 0.25 % per 10 °C, keeping calibration stable across typical machine room conditions.
Technical Specifications
Actuating Time (x=100 Bar)
80 ms
Command Input (a1)
±10 V
Fuse Protection
2.5 A (time-lag)
Hysteresis
< 0.1%
Input Impedance (a1)
100 kΩ
Leakage Flow (e, Main+pilot)
0.42 l/min
Max Power Consumption
40 VA
Max Pressure Port X
280 bar
Max Pressure Ports T,y
250 bar
Minimum Pilot Pressure
10 bar
Nominal Size
NG25
Pilot Oil Flow (e)
7.5 l/min
Protection Class
IP65
Response Sensitivity
< 0.05%
Supply Voltage
24 VDC
Temperature Drift Zero Shift
< 0.25%/10°C
1620 Old Apex Road
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