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Revolutionising Precision Control With Bosch Rexroth Servo Valves

Over the last few months, we’ve looked at several Bosch Rexroth products that are continuing to push the boundaries, for projects we’ve been working on. From the Cytropac and Sytronix Technology powering systems to Linear Actuators for Aerospace now Servo Valves for the Food industry.

In today’s fast-evolving industrial landscape, achieving precision, reliability, and responsiveness in hydraulic systems is not just a goal, it’s become a necessity. The game changing Bosch Rexroth 4WS.2EM 6 Servo Valve, is built to set new standards in closed-loop control applications for position, force, pressure, and velocity.

What makes it Stand Out?

  • A 2-stage servo valve that integrates a mechanical feedback system and a nozzle-flapper hydraulic amplifier. Designed for demanding environments.
  • Size 6 configuration with a maximum operating pressure of 315 bar and flow rates up to 48 l/min.
  • Optional integrated control electronics (OBE), providing seamless signal amplification inside the valve, or external control with modular or Euro-card format amplifiers.
  • Dry torque motor technology, eliminating contamination risks in solenoid gaps, which are critical for long-term performance.
  • Wear-free spool return element and gap-sealed control bush to minimise maintenance and extend service life.

Key Advantages for Industrial Applications

Outstanding Dynamics and Sensitivity: With features like ≤ 0.2% response sensitivity, and robust mechanical feedback, the 4WS.2EM 6 delivers exceptionally smooth and precise motion control, even under changing load conditions.

Flexible Installation: Conforming to the ISO 4401-03-02-0-05 porting pattern, it allows easy subplate mounting with diverse configuration possibilities.

Built for Harsh Environments: Capable of operating within a wide temperature range, it’s suited for some of the toughest industrial tasks.

Designed for Seamless Integration

Available with options for:

±10 mA or ±10 V command value inputs,

Various nominal flows from 2 to 25 l/min, and

Integrated service tools for easy diagnostics, maintenance and analysis.

With tight production tolerances, integrated testing, and an emphasis on both dynamic performance and long-term durability, Bosch Rexroth’s 4WS.2EM 6 is tailored for industries demanding absolute precision—think aerospace, robotics, injection moulding, and advanced manufacturing.