Bosch Rexroth | 4WRZE16W8-150-7X6EG24K31A1D3M
4WRZE16W8-150-7X/6EG24K31/A1D3M
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The 4WRZE16W8-150-7X/6EG24K31/A1D3M valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and is applied in hydraulic automation to meter flow based on an electrical reference. The unit operates on a supply voltage of 24 V DC and accepts a ±10 V command signal so that a controller can set the spool position. Coil resistance is 2 Ω at 20 °C, and the winding carries up to 2.5 A when full output is required. Power is brought in through a plug built to DIN EN 175201-804, and the housing meets IP65 so it can be installed in damp or dusty machinery spaces. NBR seals contain the working medium, which must be mineral oil of the HL or HLP type defined in DIN 51524. The assembled valve weighs 13.6 kg, providing a stable mounting base on a manifold block.
Hydraulic performance centers on a nominal flow rate of 150 l/min at a 10 bar pressure drop, enabling precise modulation of actuator speed. System pressure may reach 350 bar, while return lines with an external drain can run up to 250 bar without damaging the body. Port Y is limited to 30 bar to protect the pilot stage. Cleanliness levels are specified at 20/18/15 ISO 4406 for the main path and 18/16/13 ISO 4406 for the pilot stage to maintain spool precision. Total hysteresis does not exceed 6%, allowing repeatable positioning across the flow range. These parameters outline the operating window for dependable closed-loop control.
Technical Specifications
Coil Resistance (20 C)
2 Ω
Command Signal
±10 V (A1)
Electrical Connection
DIN EN 175201-804
Fluid Cleanliness (main)
20/18/15 ISO 4406
Fluid Cleanliness (pilot)
18/16/13 ISO 4406
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Max Coil Current
2.5 A
Max Hysteresis
6%
Max Operating Pressure
350 bar
Max Port Y Pressure
30 bar
Max Return Pressure (t, External Drain)
250 bar
Nominal Flow
150 l/min (Δp 10 bar)
Protection Class
IP65
Seals
NBR
Supply Voltage
24 V DC
Weight
13.6 kg
1620 Old Apex Road
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