Bosch Rexroth | 4WRZ25E1-220-7X6EG24N9K4D3V
4WRZ25E1-220-7X/6EG24N9K4/D3V
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The 4WRZ25E1-220-7X/6EG24N9K4/D3V proportional directional valve is part of the WRZ Proportional Directional Valves series from Bosch Rexroth and is intended to meter flow and direct hydraulic actuation in automated machinery. A coil resistance of 4.8 Ω at 20 °C restricts inrush current for stable energizing, while the resistance rising to 7.2 Ω at maximum temperature helps limit heat buildup during prolonged duty. The solenoid is rated for a 100 % duty cycle so it can remain energized without mandatory cooling pauses, and it accepts direct-current power to simplify driver electronics. A maximum coil temperature of 150 °C allows placement near hot manifolds, and the 1.5 A maximum current defines the upper boundary for the control card. The DIN EN 175301-803 electrical connector provides a standardized plug interface, and an IP65 protection class seals the coil housing against dust and water jets encountered in industrial plant environments. Installation is completed on an ISO 4401-08-07-0-94 interface so the valve can be exchanged with other components using the same port pattern.
The hydraulic section is built for a main operating pressure of 350 bar, enabling the unit to drive large cylinders or motors, while the external drain port tolerates 250 bar to prevent back-pressure damage. A maximum flow capacity of 870 l/min supports high-speed movement of sizable actuators, and a nominal flow of 220 l/min at a 10 bar pressure drop sets a reference point for predictable throttling performance. Pilot control requires 7 l/min of oil when moving from 0 % to 100 % command, and a pilot volume of 10 cm³ establishes the fluid mass that dictates step response time. The subplate weight of 18.2 kg provides mechanical stability and dampens vibration once the valve is mounted.
Technical Specifications
Coil Resistance (20 °c)
4.8 Ω
Coil Resistance (max Hot)
7.2 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803
Max Coil Temperature
150 °C
Max Current
1.5 A
Max Operating Pressure (main)
350 bar
Max Port T Pressure (ext. Drain)
250 bar
Max Valve Flow
870 l/min
Mounting Interface
ISO 4401-08-07-0-94
Nominal Flow (Δp 10 Bar)
220 l/min
Pilot Oil Flow (0→100%)
7 l/min
Pilot Oil Volume (0→100%)
10 cm³
Protection Class
IP65
Type Of Voltage
DC
Weight (subplate)
18.2 kg
1620 Old Apex Road
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