Bosch Rexroth | 4WRKE16W8-125L-3X6EG24ETK31A1D3M
4WRKE16W8-125L-3X/6EG24ETK31/A1D3M
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The 4WRKE16W8-125L-3X/6EG24ETK31/A1D3M valve belongs to the 4WRKE Directional Valves series from Bosch Rexroth and is used for precise flow control in hydraulic automation circuits. Its nominal size 16 sets the port geometry for medium-frame manifolds, while a nominal flow of 125 L/min at a 10 bar differential defines the standard performance window for proportional control tasks. The main valve can pass up to 460 L/min to accommodate transient peak demands, and channels p, a, and b are designed for continuous operation at pressures up to 350 bar. Pilot actuation tolerates a supply pressure of 315 bar, and the pilot stage requires 8.5 L/min at that pressure step to shift the spool quickly. System fluid must meet a cleanliness level of 20/18/15 per ISO 4406 to avoid wear in the precision-matched lands and bores.
Electrical interfacing is handled with a 24 V DC supply, and the integrated electronics draw no more than 72 W during full-scale operation while limiting line current to 1.5 A. Command inputs use a ±10 V signal interface, and the electronics return an actual value output of ±10 V so the control system can monitor spool position. Connections are made through a plug built to DIN EN 175201-804, and the enclosure carries an IP65 rating to resist dust ingress and water jets when mounted outside a cabinet. The valve bolts to subplates that follow the ISO 4401-07-06-0-94 pattern, enabling quick replacement in standardized manifolds, and the assembled unit weighs 11.2 kg, a consideration for support brackets and panel layouts.
Technical Specifications
Actual Value Output
±10 V
Cleanliness Class (main Valve)
20/18/15 (ISO 4406)
Connector Standard
DIN EN 175201-804
Ingress Protection
IP65
Main Valve Max Flow
460 L/min
Max Pilot Oil Supply Pressure
315 bar
Max Supply Current
1.5 A
Mounting Pattern
ISO 4401-07-06-0-94
Nominal Flow (Δp 10 Bar)
125 L/min
Nominal Size
16
Operating Pressure (p/a/b Max)
350 bar
Pilot Oil Flow (315 Bar Step)
8.5 L/min
Power (max)
72 W
Signal Interface
±10 V
Supply Voltage
24 V DC
Weight
11.2 kg
1620 Old Apex Road
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