Bosch Rexroth | 4WEH16R7X6EW110N9ETS2K410B10
4WEH16R7X/6EW110N9ETS2K4/10B10
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The 4WEH16R7X/6EW110N9ETS2K4/10B10 valve is built by Bosch Rexroth as part of the WEH Directional Spool Valves series and directs hydraulic flow in automated machinery. It uses a subplate mounting type to simplify replacement, and its ISO 4401-07-07-0-05 interface matches common NG16 manifolds. The nominal size NG16 sets passage dimensions appropriate for medium-capacity circuits, while internal pilot oil supply and return (ET) remove the need for external pilot lines. A DIN EN 175301-803 K4 connector links the solenoids to the control system, and a concealed manual override (N9) allows local actuation without exposing the push rod. The unit handles up to 300 l/min through symbol R, and a maximum operating pressure of 280 bar across ports p, A, and B supports heavy-duty service. Reliable performance is maintained with hydraulic oils between 2.8 and 500 mm²/s.
The allowable fluid temperature range of −20 to +80 °C with NBR sealing keeps the valve functional in cold starts and warm reservoirs. Pilot circuitry can receive up to 250 bar to assure rapid spool movement, whereas spring-centered three-spool versions require at least 14 bar to shift. A 1.0 mm throttle insert marked B10 restricts pilot flow to damp pressure spikes during switching. With two solenoids and spring centering the assembly weighs 8.9 kg, a factor to consider when specifying manifold support and handling equipment.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Hydraulic Fluid Temperature Range
−20 to +80 °C (NBR)
Manual Override
Concealed (N9)
Maximum Flow (symbol R)
300 l/min
Maximum Operating Pressure (p, A, B)
280 bar
Maximum Pilot Pressure
250 bar
Minimum Pilot Pressure (3-spool, Spring-centered)
14 bar
Mounting Interface
ISO 4401-07-07-0-05
Mounting Type
Subplate Mounting
Nominal Size
NG16
Pilot Oil Return
Internal (ET)
Pilot Oil Supply
Internal (ET)
Throttle Insert
Ø 1.0 mm (B10)
Viscosity Range
2.8 to 500 mm²/s
Weight (two Solenoids, Spring-centered)
8.9 kg
1620 Old Apex Road
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