Bosch Rexroth | 4WRZ10W8-85-7X6EG24ETK4V
4WRZ10W8-85-7X/6EG24ETK4/V
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The 4WRZ10W8-85-7X/6EG24ETK4/V proportional directional valve is manufactured by Bosch Rexroth as part of the WRZ Proportional Directional Valves series. It meters hydraulic flow and changes actuator direction in automated machinery. Valve size 10 sets the mounting envelope for mid-range circuit blocks, while a nominal flow of 85 l/min at a pressure drop of 10 bar supports steady movement of cylinders or motors. The main stage tolerates operating pressures up to 315 bar, and the internal drain path in port T is restricted to 30 bar to avoid back-pressure damage. A porting pattern in accordance with ISO 4401 simplifies stacking on standard manifolds. FKM seals withstand aggressive oils and elevated temperatures, and the overall weight of 7.8 kg allows single-person installation.
Filtration requirements are defined by ISO 4406 cleanliness classes 20/18/15 for the main stage and 18/16/13 for the pilot stage to keep particulate interference low. The solenoid is energized by a 24 V DC supply, and its 4.8 Ω coil resistance at 20 °C sets the electrical load. A maximum current of 1.5 A produces full proportional stroke, and a 100 % duty cycle permits continuous service without cooling pauses. The winding can reach 150 °C without loss of insulation integrity, accommodating hot oil or ambient heat. Connection is made through a DIN EN 175301-803 plug that locks securely against vibration, and the assembled envelope achieves IP65 protection against dust ingress and low-pressure water.
Technical Specifications
Cleanliness Class (main Valve)
ISO 4406 20/18/15
Cleanliness Class (pilot Valve)
ISO 4406 18/16/13
Coil Max Current
1.5 A
Coil Resistance (20°c)
4.8 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803
Max Coil Temperature
150 °C
Max Operating Pressure (main)
315 bar
Max Port T Pressure (internal Drain)
30 bar
Nominal Flow (Δp 10 Bar)
85 l/min
Porting Pattern
ISO 4401
Seal Material
FKM
Supply Voltage
24 V DC
Type Of Protection
IP65
Valve Size
10
Weight
7.8 kg
1620 Old Apex Road
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