Bosch Rexroth | 4WRTE16E125L-4X6EG24ETK31A1M
4WRTE16E125L-4X/6EG24ETK31/A1M
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The 4WRTE16E125L-4X/6EG24ETK31/A1M valve is manufactured by Bosch Rexroth for the 4WRTE Directional Control Valves series and directs fluid under closed-loop control in hydraulic automation. Its nominal size of NG16 sets the port geometry for mid-frame manifolds, while the ISO 4401-07-07-0-05 mounting interface matches standard sub-plates. The unit withstands a maximum operating pressure of 350 bar at ports P, A, and B, and it handles up to 460 l/min of flow without stability loss. Pilot oil is taken internally and returned internally, reducing external hosework, and a pilot oil flow of 14 l/min supports rapid spool shifts during a 0–100 % step. Fluid cleanliness must meet ISO 4406 18/16/13 to preserve metering edges and servo components. An IP65 protection class seals the housing against dust and low-pressure water jets, and an 11.2 kg mass allows single-person installation.
Electronic actuation is driven by a ±10 V command signal that sets spool position relative to the demanded flow rate, and a 24 V DC supply powers the on-board amplifier. Coil draw remains within 1.6 A so cabinet power supplies are not overstressed, and total electrical load is limited to 72 VA for thermal safety. The DIN EN 175201-804 (K31) connector provides a keyed interface for quick wiring in the field. Spool position is monitored continuously, enabling feedback to motion controllers for closed-loop accuracy. Return pressure at port T may reach 250 bar, allowing installation on circuits with elevated back-pressure without affecting metering precision.
Technical Specifications
Cleanliness Class
ISO 4406 18/16/13
Command Signal
+/-10 V (A1)
Current Consumption Max
1.6 A
Electrical Connection
DIN EN 175201-804 (K31)
Max Operating Pressure (p,a,b)
350 bar
Max Power Consumption
72 VA
Max Return Pressure (port T, External)
250 bar
Mounting Interface
ISO 4401-07-07-0-05
Nominal Size
NG16
Pilot Oil Flow (0-100% Step)
14 l/min
Pilot Oil Supply/return
Internal (ET)
Protection Class
IP65
Recommended Max Flow
460 l/min
Spool Position Monitoring
Yes
Supply Voltage
24 V DC
Weight
11.2 kg
1620 Old Apex Road
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