Bosch Rexroth | 4WRTE16E1-125L-4X6EG24K31F1M
4WRTE16E1-125L-4X/6EG24K31/F1M
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The 4WRTE16E1-125L-4X/6EG24K31/F1M valve is manufactured by Bosch Rexroth for the 4WRTE Directional Control Valves series. Designed to meter hydraulic flow in closed-loop automation circuits, it accepts a command input of 4–20 mA to shift the spool to proportional positions. The unit draws power from a 24 V DC supply and uses a K31 plug compliant with DIN EN 175201-804 for its electrical interface. An IP65 enclosure shields the electronics against dust and water jets during machine operation. Pilot oil is taken internally and returned externally, and a 0–100 % step requires 14 l/min of pilot flow. Spool position is monitored by an internal sensor for real-time feedback, and the valve mounts on manifolds that follow the ISO 4401-07-07-0-05 porting pattern.
The hydraulic section is rated for 350 bar on ports p, a, and b, while the external return port tolerates up to 250 bar. Flow paths are formed by 20 mm diameter ports that match common subplate channels. System oil must meet ISO 4406 cleanliness class 18/16/13 to avoid premature wear. The valve handles fluid temperatures from −20 °C to +80 °C without performance loss. A 4–20 mA measuring output transmits the actual spool position to the controller, supporting closed-loop regulation. The assembled unit weighs 11.2 kg, so the mounting surface must support this mass within the manifold block.
Technical Specifications
Command Input
4–20 mA
Electrical Connection
K31 (DIN EN 175201-804)
Fluid Cleanliness Class
ISO 4406 18/16/13
Max Fluid Temperature
+80 °C
Max Operating Pressure (p,a,b)
350 bar
Max Return Pressure (t, External)
250 bar
Measuring Output
4–20 mA
Min Fluid Temperature
−20 °C
Nominal Supply Voltage
24 V DC
Pilot Oil Configuration
Internal supply, external return
Pilot Oil Flow (0–100% Step)
14 l/min
Port Diameter (a/b/p/t)
Ø20 mm
Porting Pattern
ISO 4401-07-07-0-05
Protection Class
IP65
Spool Position Monitoring
Included
Weight
11.2 kg
1620 Old Apex Road
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