Bosch Rexroth | 4WRBKE27W430SJ-1X6ZG24EK31A1D3M
4WRBKE27W430SJ-1X/6ZG24EK31/A1D3M
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The 4WRBKE27W430SJ-1X/6ZG24EK31/A1D3M belongs to the 4WRBKE OBE Valves series from Bosch Rexroth and is applied in hydraulic automation to meter oil flow under electronic control. With a nominal size of NG27, it delivers a nominal flow of 430 l/min at a 5 bar pressure drop per edge, letting actuators move at predictable speeds. For short bursts it can pass up to 1200 l/min, supporting rapid cylinder motion when needed. A minimum pilot control oil pressure of 15 bar keeps the main spool stable during fine adjustments. Hysteresis is limited to 0.3 %, so commanded positions repeat accurately. The housing carries an IP65 protection rating, allowing installation in dusty or wet production areas. Electrically, the unit runs from a 24 V DC supply, draws up to 40 VA, and tolerates supply levels as high as 40 V DC without damage.
The pressure limits of the main ports p, a, and b are 280 bar, enabling the product to control high-force hydraulic circuits. External drain ports t and y withstand 250 bar, while internal drainage is limited to 50 bar to prevent seal overload. The x pilot supply can be routed externally and is rated for 280 bar, matching the main stage capability. The integrated pilot valve passes 22 l/min at a 5 bar differential, ensuring the main spool shifts quickly. Command signals arrive through a ±10 V setpoint input, providing compatibility with common motion controllers. The assembly weighs 18.8 kg, so it mounts rigidly on manifolds without additional supports.
Technical Specifications
Degree Of Protection
IP65
Hysteresis
0.3% (max)
Max Pressure (t, Y=external)
250 bar
Max Pressure (t, Y=internal)
50 bar
Max Pressure (x, External)
280 bar
Max Working Pressure (p,a,b)
280 bar
Maximum Flow
1200 l/min
Min Control Oil Pressure (pilot)
15 bar
Nominal Flow (Δp 5 Bar/edge)
430 l/min
Nominal Size
NG27
Pilot Valve Flow (Δp 5 Bar)
22 l/min
Power Consumption
40 VA (max)
Power Supply
24 V DC
Setpoint Input
±10 V
Supply Voltage Max
40 V DC
Weight
18.8 kg
1620 Old Apex Road
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