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The 4WRTE10V50L-4X/6EG24K31/A1M valve belongs to the 4WRTE Directional Control Valves series and is manufactured by Bosch Rexroth for closed-loop hydraulic automation where precise metering and rapid shifting are required. It is built in nominal size NG10 so it can be integrated in medium-frame manifolds while still handling a rated flow of 50 l/min. A linear flow characteristic allows the commanded spool position to translate proportionally into flow, improving cylinder speed control. The unit withstands operating pressures up to 350 bar, and it bolts directly to ISO 4401-05-05-0-05 sub-plates to standardize installation. Pilot oil can be sourced internally or returned externally, and the NG10 variant needs 7 l/min pilot flow to actuate the main stage. Electrical power is supplied at 24 V DC with an allowable window from 18 V DC to 35 V DC so common machine power supplies can be used.
Electronic positioning is driven by an A1 control interface that accepts a ±10 V command, and the integrated electronics generate a matching ±10 V measuring output for loop feedback to the motion controller. Response sensitivity is no greater than 0.05 %, enabling fine adjustments in small signal regions, while total hysteresis remains within 0.1 % to maintain consistent spool positioning after direction changes. The valve connects through a DIN EN 175201-804 plug coded K31, allowing quick service replacement without rewiring. An IP65 housing protects the coil and amplifier against dust ingress and low-pressure water jets, so panel placement is possible on open hydraulic power units. Together, these electrical features ensure tight flow regulation and reliable signaling when the valve integrates with pressure sensors, position transducers, and high-speed PLC outputs in industrial press, molding, or test bench circuits.
Control Interface
A1 (±10 V)
Electrical Connector
DIN EN 175201-804 (K31)
Flow Characteristic
Linear (L)
Hysteresis
≤ 0.1%
Max Operating Pressure
350 bar
Measuring Output
±10 V
Mounting Interface
ISO 4401-05-05-0-05
Nominal Size
NG10
Pilot Oil Flow (ng10)
7 l/min
Pilot Oil Supply/return
Internal/External (E)
Protection Class
IP65
Rated Flow
50 l/min
Response Sensitivity
≤ 0.05%
Supply Voltage
24 VDC
Supply Voltage Max
35 VDC
Supply Voltage Min
18 VDC
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