Bosch 0811404120

The Bosch 0811404120 (Part Number: 0811404120) is a precision servo valve from Bosch, designed for high-performance electrohydraulic motion control applications. This valve is part of the Bosch Rexroth range of proportional and servo valves used across industrial automation worldwide.

Product Description

The Bosch Rexroth 0811404120 servo valve provides precise, proportional control of hydraulic flow in response to electrical command signals. It is engineered for use in closed-loop hydraulic systems where accuracy, repeatability, and fast response are essential. Typical installations include CNC machine tools, hydraulic presses, paper mills, rolling mills, and industrial test equipment.

This valve features a pilot-operated design with electrical position feedback, ensuring consistent performance across varying load conditions and temperatures. The spool is precision-ground and lapped to tight tolerances, minimising internal leakage while maintaining smooth, stable control characteristics throughout the operating range.

Technical Highlights

• Precision pilot-operated spool design for stable, proportional flow control
• Electrical position feedback for accurate closed-loop operation
• High frequency response suitable for dynamic servo applications
• Low hysteresis and excellent repeatability
• Industry-standard mounting pattern for straightforward installation

Common Applications

The 0811404120 is widely used in hydraulic position and force control systems, including metalworking machinery, plastics processing equipment, power generation turbine controls, and automated production lines requiring precise actuator control.

Repair and Reconditioning

At Automated Servo Dynamics, we specialise in the repair and restoration of Bosch Rexroth servo valves including the 0811404120. Each unit is professionally disassembled, cleaned, inspected, and rebuilt to meet original equipment specifications, followed by rigorous performance testing before dispatch.

We offer free initial evaluation, fast turnaround options including 24-hour rush service, and full warranty on all repairs. Request a quote today, or browse our catalogue for more Bosch Rexroth parts.