Bosch Rexroth | 4WRPH6C4B24L-2XG24K0M-750
4WRPH6C4B24L-2X/G24K0/M-750
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The 4WRPH6C4B24L-2X/G24K0/M-750 proportional solenoid valve is produced by Bosch Rexroth for the 4WRP Solenoid Valves series. Designed for hydraulic automation, it meters flow in response to an electrical command to control cylinder or motor speed. A nominal size of 6 matches NG6 subplate cavities, while a spool coded C4 defines its internal metering geometry. The valve exhibits a linear flow characteristic so the delivered flow increases proportionally with the drive signal. A nominal flow of 24 l/min at a pressure drop of 70 bar satisfies medium-capacity circuits. Spool position is monitored by an integrated DC/DC LVDT, enabling closed-loop operation from the controller. Electrical power is supplied at 24 V DC through a central seven-pin K0 plug that also carries the feedback signals. When the coil is de-energized the spool shifts to a 4/4 fail-safe position, isolating pressure lines and venting the actuator to maintain safety during power loss.
Installation follows mounting pattern ISO 4401-03-02-0-94 so the unit bolts directly to standard manifold plates. Mineral-oil types HL or HLP serve as the working fluid, and NBR seals resist these media for reliable leakage control. System cleanliness must reach ISO 4406 class 18/16/13 to limit particulate wear on the metering edges. The pressure rating is 315 bar on ports P, A, and B, giving adequate margin for high-pressure tasks, while the tank port withstands 250 bar to accommodate back-pressure conditions. Ruggedized construction tolerates 40 g vibration, allowing the valve to remain functional on mobile or dynamic machinery. A mass of 2.5 kg facilitates single-person handling during service. Together these characteristics support precise, repeatable flow control in demanding hydraulic installations.
Technical Specifications
Electrical Connection
Central Plug K0 (7-pin)
Fail-safe Position
4/4 (De-Energized)
Flow Characteristic
Linear
Fluid Cleanliness
ISO 4406 18/16/13
Hydraulic Fluid
Mineral Oil (HL, HLP)
Max Pressure (p,a,b)
315 bar
Max Pressure (t)
250 bar
Mounting Pattern
ISO 4401-03-02-0-94
Nominal Flow (Δp 70 Bar)
24 l/min
Nominal Size
6
Position Feedback
LVDT (DC/DC)
Seal Material
NBR
Spool Symbol
C4
Supply Voltage
24 V DC
Vibration Resistance (ruggedized)
40 g
Weight
2.5 kg
1620 Old Apex Road
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