Bosch Rexroth | 4WEH16Q7X6EW110N9ETK4N08V
4WEH16Q7X/6EW110N9ETK4/N08V
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The 4WEH16Q7X/6EW110N9ETK4/N08V is a directional spool valve in the WEH Directional Spool Valves series from Bosch Rexroth, built to route hydraulic flow in automated machinery. It is supplied in size NG16, giving it a port area matched to medium-frame actuators. A porting pattern of ISO 4401-07-07-0-05 lets the valve drop onto standardized subplates without adapter blocks. Flow capability is defined by a 32 mm² free cross-section between A–T and B–T when the spool is in the zero position, keeping pressure losses low during idle return. Operating ports p, a, and b withstand up to 280 bar, while the pilot stage tolerates as much as 250 bar so remote actuation can share the same supply. Spring-centered versions need at least 14 bar pilot pressure to shift reliably, and a 5.72 cm³ pilot volume in the three-spool core minimizes the oil displaced per command. Command energy comes from a Type 6E high-power pilot valve that drives the main spool with consistent force.
Subplate mounting streamlines manifold layout, and M10 × 60 ISO 4762 screws torqued to 58 Nm ±10 % secure the body against line shock. Internal pilot oil supply and return (ET) remove external jumper hoses, while a 35 l/min pilot flow achieves the shortest switching time for high-cycle applications. The internal return port may see up to 160 bar, allowing elevated tank back-pressure in compact power units. Electrical connection follows DIN EN 175301-803 K4, giving a detachable plug for coil replacement and field wiring. A concealed N9 manual override permits local shifting without leaving protruding levers that could be hit during servicing. These features combine to deliver a fast, tightly packaged valve that integrates easily into high-pressure hydraulic control loops.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Free Cross-section (zero, Q)
32 mm² (A–T; B–T)
Manual Override
Concealed (N9)
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Max Return Port Pressure (internal, Ac)
160 bar
Min Pilot Pressure (spring-centered)
14 bar
Mounting Screws
M10 x 60 (ISO 4762)
Mounting Style
Subplate Mounting
Pilot Control Valve
Type 6E (High-Power)
Pilot Flow (shortest Switching Time)
35 l/min
Pilot Oil Supply/return
Internal (ET)
Pilot Volume (3-spool, Ng16)
5.72 cm³
Porting Pattern
ISO 4401-07-07-0-05
Screw Tightening Torque
58 Nm (±10%)
Size
NG16
1620 Old Apex Road
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