Bosch Rexroth | 4WRBKE27E430SJ-1X6ZG24ETK31A1D3M
4WRBKE27E430SJ-1X/6ZG24ETK31/A1D3M
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The 4WRBKE27E430SJ-1X/6ZG24ETK31/A1D3M belongs to the 4WRBKE OBE Valves series from Bosch Rexroth and modulates flow and pressure in hydraulic automation circuits. It is sized NG27, giving adequate port area for high-capacity lines. A nominal flow of 430 l/min at a 5 bar differential is reached when the main stage spool travels its full ±10 mm stroke. Pilot operation needs a minimum control oil pressure of 15 bar, a control oil demand of 11.7 l/min at 100 bar, and a supply flow of 22 l/min at a 5 bar differential. Maximum line pressure is 280 bar at ports p, A, and B, while port T withstands up to 50 bar, protecting the return path against excessive back-pressure.
Integrated electronics let the unit receive a ±10 V command through a 100 kΩ input resistance while a 24 V DC supply powers the amplifiers and solenoids. Flow reaches the demanded value in less than 60 ms, and positioning accuracy stays within 0.5 percent with hysteresis kept below 0.3 percent for repeatable behavior. The housing carries an IP65 rating, allowing installation where dust and low-pressure water are present. Overall mass is 18.8 kg, providing sufficient rigidity for manifold mounting. These electrical characteristics align with the hydraulic stage to ensure proportional control throughout the valve’s operating range.
Technical Specifications
Control Oil Requirement (0-100%, X=100 Bar)
11.7 l/min
Degree Of Protection
IP65
Hysteresis
<0.3 %
Input Resistance
100 kΩ
Input Signal
+/-10 V
Max Pressure T (y=int)
50 bar
Max Working Pressure (p, A, B)
280 bar
Min Control Oil Pressure
15 bar
Nominal Flow (delta P=5 Bar)
430 l/min
Nominal Size
NG27
Pilot Valve Supply Flow (delta P=5 Bar)
22 l/min
Positioning Accuracy
<0.5 %
Power Supply
24 V DC
Response Time (0-100%)
<60 ms
Spool Stroke (main Stage)
+/-10 mm
Weight
18.8 kg
1620 Old Apex Road
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