Bosch Rexroth | 4WEH16G7X6EG24N9K4
4WEH16G7X/6EG24N9K4
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The 4WEH16G7X/6EG24N9K4 directional spool valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth for hydraulic automation where rapid flow reversal is required. This NG16 model carries a maximum flow capacity of 300 l/min and endures operating pressure up to 280 bar on ports P, A, and B. It mounts on subplates using the ISO 4401-07-07-0-05 interface, ensuring interchangeability within standardized manifolds. The solenoid operates from a 24 V DC supply, while electrical termination is made via a DIN EN 175301-803 K4 connector. System fluid should meet ISO 4406 class 20/18/15 cleanliness to avoid wear of precision surfaces. A concealed manual override permits spool shifting during setup or emergency conditions without disturbing the electrical circuit.
Pilot stage limits govern additional performance criteria: pilot pressure may rise to 250 bar, port T can also be exposed to 250 bar, and the external drain port Y withstands 210 bar. Spring-centered operation requires a minimum pilot pressure of 14 bar. Achieving the fastest switching response calls for 35 l/min of pilot flow, with each actuation displacing 5.72 cm³ of oil from the pilot chamber. The valve’s NBR sealing system allows continuous service with fluid temperatures up to 80 °C. Functional safety is reflected in a mean time to dangerous failure of 100 years, supporting long-term reliability in demanding power units.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed
Max Flow (ng16)
300 l/min
Max Fluid Temperature (nbr)
80 C
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Max Pressure Port T
250 bar
Max Pressure Port Y (external, Dc)
210 bar
Min Pilot Pressure (spring-centered)
14 bar
Mttfd (type Weh)
100 years
Pilot Flow For Fastest Switching
35 l/min
Pilot Volume (3-position, Spring-centered)
5.72 cm3
Porting Pattern
ISO 4401-07-07-0-05
Size
NG16
Supply Voltage
24 V DC
1620 Old Apex Road
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