Bosch Rexroth | 4WRZE32E520-7X6EG24N9K31A1D3V
4WRZE32E520-7X/6EG24N9K31/A1D3V
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The 4WRZE32E520-7X/6EG24N9K31/A1D3V valve is produced by Bosch Rexroth as part of the WRZ Proportional Directional Valves series. It regulates flow and direction in hydraulic automation circuits by converting an analog ±10 V command into a proportional spool position. Valve size 32 provides large flow sections, and the unit delivers 520 l/min when the pressure drop across the main stage is 10 bar. A maximum operating pressure of 350 bar lets the valve support high-pressure systems common in presses and injection machinery. Hysteresis is limited to 6 percent, helping maintain repeatable positioning of actuators. A detachable proportional solenoid serves as the pilot valve so the coil can be replaced without disturbing hydraulics. Electronics on the valve require a 24 V DC supply and receive control signals through a DIN EN 175201-804 plug for standardized wiring.
External pilot oil supply keeps control pressure independent of main line variations, while a 3 A power pulse briefly drives the spool during rapid shifts before settling to a continuous current of 1.8 A. Return flow at port T may rise to 150 bar, allowing back-pressure circuits without jeopardizing stability. The valve is designed for mineral oil to DIN 51524 (HL or HLP), and FKM seals tolerate the fluid’s temperature range and additives. A concealed manual override permits local movement of the spool during commissioning or power loss without exposing components, and its protected design reduces accidental actuation. The external pilot arrangement lets designers draw control oil from a conditioned source, improving response consistency. Subplate mounting brings the weight to 42.2 kg, a factor to consider when selecting lifting equipment for installation.
Technical Specifications
Command Input Signal
±10 V
Current Consumption (imax)
1.8 A
Electrical Connection
DIN EN 175201-804 Plug
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Hysteresis
6% max
Manual Override
Concealed
Max Operating Pressure (main)
350 bar
Nominal Flow @ Δp 10 Bar
520 l/min
Pilot Oil Supply
External
Pilot Valve Design
Proportional Solenoid (Detachable Coil)
Power Pulse Current
3 A
Return Flow Pressure (port T, Ext)
150 bar max
Seals
FKM
Supply Voltage (electronics)
24 V DC
Valve Size
32
Weight (subplate Mounting)
42.2 kg
1620 Old Apex Road
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