Bosch Rexroth | 4WRKE27W6-500L-3X6EG24K31A5D3V
4WRKE27W6-500L-3X/6EG24K31/A5D3V
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The 4WRKE27W6-500L-3X/6EG24K31/A5D3V proportional directional valve is manufactured by Bosch Rexroth for the 4WRKE Directional Valves series and serves to regulate actuator motion in hydraulic automation. The unit is supplied in nominal size 27, giving a porting capacity suited to large flow circuits. Its W6 spool defines the internal flow paths, while a linear characteristic curve ensures the output flow rises proportionally with the command signal. A nominal flow of 500 L/min is provided for normal duty, and a permissible peak of 1000 L/min prevents cavitation during transient demands. Ports p, a, and b tolerate operating pressures up to 210 bar. Spool movement is produced by a 6E solenoid with a removable coil, which responds to a ±10 V analog input for precise metering. The coil is powered from a 24 V DC source and may draw as much as 72 W when driven to full stroke.
Repeatability is supported by hysteresis held at or below 1 percent, limiting positional error after successive cycles. Pilot oil is taken internally, removing the need for external pilot plumbing and easing manifold layout. A built-in ZDR 6 DP0-4X/40YM-W80 pressure reducing valve maintains a steady pilot pressure so the main spool behaves consistently under fluctuating supply conditions. Electrical power and feedback are routed through a DIN EN 175201-804 connector coded K31, giving a keyed interface that simplifies service. FKM seals protect against common hydraulic oils and elevated operating temperatures. The assembled valve weighs 17 kg, information that aids designers when sizing mounting plates and support brackets in industrial machinery.
Technical Specifications
Characteristic Curve
Linear (L)
Command Input
±10 V (A5)
Electrical Connection
DIN EN 175201-804 (K31)
Hysteresis
≤ 1%
Max Operating Pressure (p,a,b)
210 bar
Max Permissible Flow
1000 L/min
Nominal Flow
500 L/min
Nominal Size
27
Pilot Oil Supply
Internal (E)
Power Consumption, Max
72 W
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80 (D3)
Seal Material
FKM (V)
Solenoid Type
6E (removable coil)
Spool Symbol
W6
Supply Voltage
24 V DC
Weight
17 kg
1620 Old Apex Road
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