Bosch Rexroth | 4WRBKE27E1-430SJ-1X6ZG24K31A1D3M
4WRBKE27E1-430SJ-1X/6ZG24K31/A1D3M
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The 4WRBKE27E1-430SJ-1X/6ZG24K31/A1D3M valve is part of the 4WRBKE OBE Valves series produced by Bosch Rexroth for hydraulic automation where precise flow and pressure control are required. It operates on a 24 V DC supply voltage to energize its integrated electronics, and it draws 40 VA of power so panel transformers can be sized accordingly. A ±10 V setpoint input allows the controller to issue proportional commands without signal conversion. The electrical connection complies with EN 175201-804 K31, offering standardized plugs for quick wiring. Installation is simplified by the ISO 4401-08-07-0-94 mounting interface that matches common subplates. The housing weighs 18.8 kg, giving it sufficient mass for vibration damping on a manifold block. An IP65 degree of protection shields internal components from dust and water jets in factory settings.
The valve supports a maximum flow of 1200 l/min so it can service large cylinders and motors. Its nominal flow is 430 l/min at 5 bar per edge, ensuring linear response in most servo loops. Ports p, a, and b withstand working pressures up to 280 bar, and the external X pilot line carries the same 280 bar rating, while the external T drain line is limited to 250 bar to protect the return circuit. A minimum pilot pressure of 15 bar is required before the main stage starts to shift. Control oil demand reaches 11.7 l/min at 100 bar, supplying the pilot system for dynamic operation. Control oil volume is 11.3 cm³ for the full ±10 mm main spool stroke, defining the displacement the pilot stage must move during a complete modulation cycle.
Technical Specifications
Control Oil Requirement (x=100 Bar)
11.7 l/min
Control Oil Volume (100%)
11.3 cm3
Degree Of Protection
IP65
Electrical Connection
EN 175201-804 (K31)
Max Pressure T (y Ext.)
250 bar
Max Pressure X (ext.)
280 bar
Max Working Pressure (p,a,b)
280 bar
Maximum Flow
1200 l/min
Minimum Pilot Pressure
15 bar
Mounting Interface
ISO 4401-08-07-0-94
Nominal Flow (5 Bar/edge)
430 l/min
Power Consumption
40 VA
Setpoint Input
±10 V
Spool Stroke (main Stage)
±10 mm
Supply Voltage
24 V DC
Weight
18.8 kg
1620 Old Apex Road
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