Bosch Rexroth | 4WRZ10W8-50-7X6EG24N9ETK4D3M
4WRZ10W8-50-7X/6EG24N9ETK4/D3M
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The 4WRZ10W8-50-7X/6EG24N9ETK4/D3M valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and adjusts hydraulic flow in automated machinery. A coil resistance of 4.8 Ω at 20 °C provides predictable current at cold start, while the resistance rising to 7.2 Ω when hot limits power once steady-state is reached. The solenoid is designed for a 24 V DC supply and can draw up to 1.5 A, so standard drive cards can energize it directly. A 100 % duty cycle permits continuous actuation, and the coil may reach 150 °C without exceeding its thermal rating. IP65 protection keeps dust and low-pressure water jets away from internal parts, and wiring is made through a DIN EN 175301-803 connector for quick field service.
The valve fits manifolds that follow ISO 4401-05-05-0-94, ensuring interchangeability with other size 10 components. A nominal flow of 50 l/min at a 10 bar pressure drop defines capacity, and the main stage tolerates up to 315 bar while the T port is limited to 30 bar to safeguard the return line. A 1.8 mm pilot throttle insert moderates pilot oil, and hysteresis is held to 6 % for repeatable spool positioning. Fluid must meet cleanliness class 20/18/15 per ISO 4406 to minimize wear. The complete valve and subplate assembly weighs 7.8 kg, a consideration for mounting and handling in compact power units.
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
Fluid Cleanliness Class (main)
20/18/15 (ISO 4406)
Hysteresis (max)
6%
Max Coil Temperature
150 °C
Max Operating Pressure (main)
315 bar
Max Port T Pressure (internal)
30 bar
Max Solenoid Current
1.5 A
Mounting Pattern
ISO 4401-05-05-0-94
Nominal Flow @ Δp 10 Bar
50 l/min
Pilot Throttle Insert Diameter
1.8 mm
Protection Rating
IP65
Supply Voltage
24 V DC
Weight (subplate)
7.8 kg
1620 Old Apex Road
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