Bosch REXROTH R911259395 is a digital hydraulic axis controller from the Rexroth HNC100 series. It is designed for high-precision closed-loop control of hydraulic drives, providing programmable NC control for hydraulic axes in industrial automation applications.

The module is mainly used to control proportional and servo hydraulic valves, enabling accurate position, speed, pressure, and force regulation in hydraulic systems. The model version  R911259395 is configured for one hydraulic axis and includes 8 digital inputs/outputs.

Technical Description

Manufacturer: Bosch Rexroth
Product Series: HNC100 Digital Axis Controller
Model:  R911259395
Product Type: Programmable hydraulic motion controller
Control Function: Digital axis control / hydraulic NC control

Main Features

• Single-axis hydraulic motion control
• Closed-loop control for hydraulic drives
• Programmable NC functions
• High-speed real-time control processing
• Position, velocity, pressure, and force control capability
• Supports proportional and servo valve applications
• Integrated digital I/O interface
• Suitable for connection with industrial automation systems

Model Interpretation

• VT-HNC100 – HNC100 hydraulic numerical controller series
• -1 – Control of 1 hydraulic axis
• -22 – Hardware/component series version
• /W – Wall-mount housing version
• 08 – 8 digital inputs/outputs configuration
• 0-0 – Standard configuration options

Electrical / Hardware Characteristics

• Power supply: 18–36 VDC (typical HNC100 series range)
• Processor: 16/32-bit microcontroller architecture
• Digital I/O: 8 channels
• Mounting: Control cabinet installation
• Protection class: IP20
• Weight: approximately 1 kg

Application Range

The REXROTH R911259395 is widely applied in:

Hydraulic Machinery

• Hydraulic presses
• Injection molding machines
• Die casting equipment
• Forming and stamping systems

Industrial Automation

• Hydraulic positioning systems
• Test benches
• Material testing machines
• Special-purpose machinery

Motion Control Applications

• Hydraulic cylinder positioning
• Load force control
• Precision movement control
• Retrofit of traditional hydraulic control systems

Advantages

• High precision: Provides accurate closed-loop hydraulic axis control.
• Fast response: Designed for dynamic hydraulic applications requiring rapid correction.
• Flexible programming: Allows customized hydraulic motion sequences.
• Improved system stability: Replaces conventional analog hydraulic amplifiers with intelligent digital control.
• Easy integration: Can work with industrial PLC and automation environments.

Conclusion

The REXROTH R911259395 Digital Axis Controller is a reliable solution for advanced hydraulic motion control. With programmable NC functionality, single-axis closed-loop regulation, and integrated digital I/O, it is suitable for demanding applications requiring high accuracy, repeatability, and dynamic hydraulic performance. It is commonly used as a key control component in hydraulic presses, injection molding systems, test equipment, and industrial automation machinery.