Bosch Rexroth | 4WRZ16W8-100-7X6EG24N9ETK4D3M
4WRZ16W8-100-7X/6EG24N9ETK4/D3M
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The 4WRZ16W8-100-7X/6EG24N9ETK4/D3M valve is part of the WRZ Proportional Directional Valves series produced by Bosch Rexroth, and it modulates flow direction and volume in automated hydraulic circuits. A nominal flow of 100 l/min at a 10 bar pressure drop lets the main stage drive medium-sized actuators at repeatable speeds. The mounting surface follows ISO 4401-07-06-0-94 so the unit bolts directly to common subplates without adapters. A 24 V DC supply energizes the solenoid, and the coil can draw up to 1.5 A to reach full spool travel. Wiring is completed through a DIN EN 175301-803 connector, giving quick exchange capability during service. Internal pilot supply and drain (ET) remove the need for external pilot lines, while pilot oil flow reaches 5.5 l/min when the command signal moves from 0 to 100 percent, ensuring consistent control forces. A concealed N9 manual override permits local actuation during setup without exposing moving parts, and the required fluid cleanliness class is ISO 4406 20/18/15 to protect precision clearances.
Operating limits include a maximum pressure of 350 bar on the main ports and a 30 bar cap on the internal return port T to keep dynamic loads within seal capacity. NBR sealing material resists standard mineral oils, and it retains flexibility across a viscosity window of 20 to 380 mm²/s for stable leakage control. The permissible hydraulic fluid temperature ranges from −20 to +80 °C, accommodating cold starts and high tank temperatures in industrial environments. When a matching cable socket is fitted, the assembly meets an IP65 rating, shielding the coil against dust ingress and low-pressure water jets. Subplate mounting weight is 13.4 kg, providing mass for vibration damping and stable alignment in manifold stacks. These characteristics round out the valve’s profile for precise proportional control in high-pressure hydraulic automation.
Technical Specifications
Cleanliness Class (main Valve)
ISO 4406 20/18/15
Electrical Connection
DIN EN 175301-803
Hydraulic Fluid Temp Range
-20 to +80 °C
Ip Rating
IP65 (with cable socket)
Manual Override
Concealed (N9)
Max Coil Current
1.5 A
Max Operating Pressure (main)
350 bar
Max Return Port T Pressure (internal)
30 bar
Mounting Interface
ISO 4401-07-06-0-94
Nominal Flow (Δp=10 Bar)
100 l/min
Pilot Oil Flow (x,y 0→100%)
5.5 l/min
Pilot Oil Supply/drain
Internal (ET)
Seal Material
NBR
Supply Voltage
24 V DC
Viscosity Range
20 to 380 mm2/s
Weight (subplate Mounting)
13.4 kg
1620 Old Apex Road
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