Bosch Rexroth | 4WRKE16E125L-3X6EG24ETK31A1D3M
4WRKE16E125L-3X/6EG24ETK31/A1D3M
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The 4WRKE16E125L-3X/6EG24ETK31/A1D3M valve is manufactured by Bosch Rexroth for the 4WRKE Directional Valves series and regulates flow and pressure in hydraulic automation systems. It is produced in nominal size 16 so it fits subplates that accept that cavity dimension. Its ISO 4401-07-06-0-94 porting pattern permits direct mounting to standardized manifolds while keeping plumbing compact. The integrated proportional solenoids are powered by a 24 V DC supply voltage that drives spool movement. A ±10 V command and actual value interface links the valve to analog controllers for closed-loop positioning. Response sensitivity of 0.5 % lets small voltage changes adjust flow with fine resolution, and maximum hysteresis is limited to 1 % to support repeatable motion cycles. At a 10 bar pressure drop the nominal flow reaches 125 L/min, giving a baseline for circuit sizing, and when fully opened the main stage can pass up to 460 L/min for peak demand.
The A and B work ports withstand operating pressures up to 350 bar, allowing installation in high-pressure power units. The pilot stage draws its supply internally, and pilot oil also drains internally to avoid external lines. The internal pilot channel tolerates pressures up to 315 bar, and during a full control step the pilot circuit consumes 8.5 L/min, which must be provided by the system pump. NBR seal material resists common mineral hydraulic fluids and maintains leak-tight performance. An IP65 housing prevents dust ingress and low-pressure water jets so the valve can sit in exposed machine areas. A mass of 11.2 kg allows handling with ordinary lifting tools during assembly and maintenance.
Technical Specifications
Command/actual Value
±10 V
Enclosure Protection
IP65
Hysteresis (max)
1%
Max Main Valve Flow
460 L/min
Max Operating Pressure (p, A, B)
350 bar
Nominal Flow (10 Bar Δp)
125 L/min
Nominal Size
16
Pilot Oil Drain
Internal
Pilot Oil Flow (step 0–100%, 315 Bar)
8.5 L/min
Pilot Oil Supply
Internal
Pilot Oil Supply (max)
315 bar
Porting Pattern
ISO 4401-07-06-0-94
Response Sensitivity
0.5%
Seal Material
NBR
Supply Voltage
24 VDC
Weight
11.2 kg
1620 Old Apex Road
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