Bosch Rexroth | 4WRL16W4Z180S-3XG24Z4M
4WRL16W4Z180S-3X/G24Z4/M
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The 4WRL16W4Z180S-3X/G24Z4/M valve belongs to the 4WRL Solenoid Valves series from Bosch Rexroth and regulates hydraulic flow and pressure in automated circuits. It is supplied in nominal size NG16, a rating that fixes the passage dimensions for medium-flow systems. Installation follows the ISO 4401-07-06-0-94 mounting pattern so the body mates directly with standardized subplates. The solenoid windings operate on 24 V DC; at 20 °C each coil presents 2.5 Ω resistance, and the drive electronics must therefore limit current to the 2.7 A maximum allowed. Continuous service is possible because the relative duty cycle is 100 %, while electrical loading is capped at 40 VA to control heat rise. An IP65 housing protects internal parts against dust and low-pressure water jets during field use. All dynamic seals are formed from NBR to suit common mineral oils and maintain leakage integrity.
The valve uses an external pilot oil supply at port X and returns pilot oil externally through port Y, allowing separate pressure optimization without affecting main flow. Working ports P, A, and B tolerate pressures up to 350 bar, whereas the tank and pilot channels T, X, and Y are limited to 250 bar, so circuit designers must size relief devices accordingly. Electrical connection is made through an M16 x 1.5 connector with two power pins and a protective earth to simplify field wiring. Integrated position feedback delivers a 0 to +10 V transducer signal, and the electronics provide a dedicated +15 V source capable of 35 mA to energize the sensor. These interface features support closed-loop control architectures where spool position is read by the controller and coil current is adjusted to meet commanded flow profiles.
Technical Specifications
Coil Resistance (20°c)
2.5 Ω
Degree Of Protection
IP65
Max Power Consumption
40 VA
Max Pressure (p/a/b)
350 bar
Max Pressure (t/x/y)
250 bar
Max Solenoid Current
2.7 A
Mounting Pattern
ISO 4401-07-06-0-94
Nominal Size
NG16
Pilot Oil Return
External (Y)
Pilot Oil Supply
External (X)
Relative Duty Cycle
100%
Seal Material
NBR
Solenoid Connector
M16x1.5 (2P+PE)
Supply Voltage
24 V DC
Transducer Signal
0 to +10 V
Transducer Supply
+15 V/35 mA
1620 Old Apex Road
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