Bosch Rexroth | 4WRBKE27E430SJ-1X6ZG24EK31A1D3M
4WRBKE27E430SJ-1X/6ZG24EK31/A1D3M
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The 4WRBKE27E430SJ-1X/6ZG24EK31/A1D3M valve belongs to the 4WRBKE OBE Valves series from Bosch Rexroth and is intended to regulate flow and pressure in automated hydraulic circuits. A nominal flow rate of 430 l/min establishes the standard throughput the main stage can deliver, while a maximum working pressure of 280 bar at ports p, a, and b permits use in high-pressure machines. The valve tolerates short-term peaks because its maximum flow capacity is 1200 l/min. Pilot control remains stable as long as a minimum control oil pressure of 15 bar is available, and a control oil volume of 11.3 cm³ at full command influences the dynamic response. A 10 mm spool stroke defines the maximum valve opening, and the pilot stage passes 22 l/min at a 5 bar differential to keep the main spool positioned.
The design supports a 100 % duty cycle so it can remain energized without cooling pauses, and the electronics draw up to 40 VA from a nominal 24 V DC supply, which suits common control cabinets. A 2.5 A F external fuse safeguards the power input against overcurrent. The enclosure meets IP65, preventing dust ingress and water jets from affecting internal parts, while fluid entering the unit must meet ISO 4406 18/16/13 cleanliness to protect metering edges. Installation follows the ISO 4401-08-07-0-94 mounting pattern, allowing direct manifold fastening, and the return port endures up to 250 bar so back-pressure lines can be routed without special relief devices. Finally, a weight of 18.8 kg influences handling procedures and the manifold’s structural support.
Technical Specifications
Control Oil Volume (100%)
11.3 cm3
Degree Of Protection
IP65
Duty Cycle
100%
External Fuse
2.5 AF
Fluid Cleanliness Class
ISO 4406 18/16/13
Max Flow Capacity (qmax)
1200 l/min
Max Pressure In T (y Ext.)
250 bar
Max Working Pressure (p,a,b)
280 bar
Min Control Oil Pressure (pilot)
15 bar
Mounting Pattern
ISO 4401-08-07-0-94
Nominal Flow Rate
430 l/min
Pilot Valve Flow (Δp=5 Bar)
22 l/min
Power Consumption (max)
40 VA
Power Supply (nominal)
24 V DC
Spool Stroke, Main Stage
10 mm
Weight
18.8 kg
1620 Old Apex Road
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