Bosch Rexroth 4WRLE-16 Proportional Directional Control Valve

Rexroth Directional Control Valve with Electrical Position Feedback and Integrated OBE Electronics
Bosch Rexroth 4WRL16 Hydraulic Control Valve

Description:

The 4WRLE-16 belongs to the 4WRLE series of high-performance, pilot-operated proportional directional control valves from Bosch Rexroth. It is designed for precise control of hydraulic fluid direction and flow in demanding industrial applications — including machine tools, plastic processing, mobile hydraulics, and general automation systems. The valve combines robust hydraulic mechanics with electronics: it features integrated electronics (on-board electronics, OBE) and internal position feedback, enabling accurate, repeatable control of spool position.

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Key Features of Bosch Rexroth 4WRLE-16 Proportional Directional Control Valve

Parameter Typical Value / Info
Valve type Pilot-operated proportional directional control valve with integrated electronics (OBE)
Size / Nominal size NG16 (Size “16”)
Mounting pattern Subplate, ISO 4401-07-07-0-05
Maximum operating pressure (P, A, B, external pilot) Up to ~ 270 bar for size 16 (depending on version)
Internal pilot supply pressure / Port X ~ 270 bar
Nominal flow (Δp = 5 bar) 200 / 250 L/min (depending on spool symbol/variant)
Maximum flow Around 800 L/min (for some variants)
Control / Actuation Electrically actuated via integrated electronics; command signal ±10 V (or 4–20 mA where configured)
Feedback / Monitoring Internal position feedback (main spool + pilot spool) for accurate and dynamic control
Fail-safe behavior If electronics/power off: pilot valve springs to fail-safe, main valve returns to spring-centered or defined “safe” position (depending on spool symbol)