Bosch Rexroth 4WRPEH10 Controlled Directional Servo Valve

Rexroth 4WRPEH10 Servo Valve Front View
Bosch Rexroth 4WRPEH10 Proportional Servo Valve
Bosch Rexroth 4WRPEH10 Servo Valve Side Mounting
Rexroth 4WRPEH10 Servo Valve Internal Electronics Detail

Description:

The 4WRPEH10 is a high-performance proportional directional valve from Bosch Rexroth’s 4WRPEH series. It’s a direct-operated spool valve with integrated electronics (OBE) and electric position feedback, designed to provide precise control over hydraulic flow direction and magnitude.

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Key Features of Bosch Rexroth 4WRPEH10 Controlled Directional Servo Valve

Parameter Value / Description
Valve type / Size 4/4 controlled directional valve, Size 10 (NG10)
Actuation / Control Direct-operated proportional solenoid with position control & integrated electronics (OBE) + electric position feedback (LVDT)
Mounting / Connection Subplate / plate port, porting pattern per ISO 4401-05-04-0-05
Operating Pressure Ports P, A, B: up to 315 bar; Port T: up to 250 bar
Rated Flow 50 to 100 L/min (Δp = 35 bar per edge); depending on configuration.
Hydraulic Fluid / Viscosity Mineral hydraulic oils per DIN 51524 (HL, HLP, HLPD …). Recommended viscosity: 20–100 mm²/s, permissible range 10–800 mm²/s.
Fluid Temperature Range –20 °C to +70 °C (oil)
Ambient Temperature / Environment –20 °C to +50 °C; valve can be installed in any position; vibration resistance up to 25 g (3-axis, 24h test)
Electrical Interface Connector: 6-pole + PE (6P+PE), differential amplifier input. Command signal input either ±10 V (interface A1) or 4–20 mA (interface F1, R_sh = 200 Ω)
Fail-safe / Behaviour at Zero Signal In deactivated state (0V or no signal), valve returns to a defined “fail-safe” neutral position (spring-centered spool)