Bosch Rexroth | 4WRZ25E1-220-7X6EG24N9K4D3M
4WRZ25E1-220-7X/6EG24N9K4/D3M
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The 4WRZ25E1-220-7X/6EG24N9K4/D3M belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and modulates hydraulic flow for automated machine functions. It supports a nominal flow of 220 l/min at a 10 bar pressure drop to satisfy medium-capacity circuits, while the main stage tolerates up to 350 bar operating pressure for high-pressure lines. Installation is on a subplate with the ISO 4401-08-07-0-94 interface, and electrical power reaches the coil through a DIN EN 175301-803 plug. The enclosure achieves IP65 when the matching socket is fitted, so sprayed fluid and dust are excluded. A coil resistance of 4.8 Ω at 20 °C and a maximum control current of 1.5 A define the driver requirements, and continuous control is possible because the duty cycle is 100%. Oil supplied to the main stage must meet ISO 4406 cleanliness class 20/18/15 to prevent wear and sticking.
Flow accuracy is maintained with hysteresis of no more than 6 percent between increasing and decreasing commands. The pilot section moves the spool with 7 l/min of pilot oil from 0 to 100 percent input and displaces a total pilot volume of 10 cm³ during that stroke. Return pressure limits are 250 bar when an external drain is used and 30 bar when the drain is internal, so circuit design must choose the correct configuration. A ZDR 6 DP0-4X/40YM-W80 pressure-reducing valve is fitted to stabilize pilot pressure under varying load. The assembly weighs 18.2 kg, which influences manifold support and handling equipment during installation.
Technical Specifications
Cleanliness Class (main Valve)
ISO 4406 20/18/15
Coil Resistance (20 °c)
4.8 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803 Plug
Electrical Protection
IP65 (with socket)
Hysteresis
≤ 6%
Max Current
1.5 A
Max Operating Pressure (main)
350 bar
Max Port T Pressure (external Drain)
250 bar
Max Port T Pressure (internal Drain)
30 bar
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
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Weight
18.2 kg
1620 Old Apex Road
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