Bosch Rexroth MHD112D-027-PP0-AN Synchronous Servo Motor with Advanced Encoder System for Precision Motion Control

Bosch Rexroth MHD112D-027-PP0-AN Synchronous Servo Motor

The Bosch Rexroth MHD112D-027-PP0-AN is a high-performance synchronous servo motor designed for precision motion control applications requiring robust performance, reliability, and integration flexibility. As part of the MHD series, this motor combines advanced electromagnetic design, high dynamics, and excellent overload capability, making it suitable for a wide range of industrial automation tasks, including CNC machinery, robotics, packaging systems, and material handling equipment.

Overview

The MHD112D-027-PP0-AN is a member of the MHD112 family, which is known for its compact design, high torque density, and exceptional dynamic response. This particular model is engineered to deliver reliable operation under demanding conditions, with built-in features such as an advanced encoder system, optional holding brake, and compatibility with liquid or surface cooling options.

The motor is designed to work seamlessly with Rexroth’s range of digital drive controllers, ensuring optimized performance and simplified commissioning through automatic parameterization via the integrated encoder memory.

Key Features

1. High Torque and Power Density
   The MHD112D-027-PP0-AN offers a high torque-to-volume ratio, making it ideal for applications where space is limited but performance cannot be compromised.

2. Advanced Encoder System
   Equipped with a high-resolution digital encoder (HSF type), the motor provides precise feedback for accurate speed and position control. The encoder stores motor parameters, enabling quick and error-free setup with compatible Rexroth drives.

3. Robust Construction
   The motor housing is designed to meet protection class IP65 (standard), providing resistance against dust and water jets. Optional sealing air connections are available for enhanced protection in harsh environments.

4. Flexible Cooling Options
   Depending on the application requirements, the motor can be equipped with surface cooling (blower) or liquid cooling, ensuring optimal thermal management even under continuous operation or high cyclic loads.

5. Holding Brake Option
   An electrically released holding brake is available as an option, providing safe operation for vertical axes or applications requiring position holding during power-off.

6. Compliance and Certification
   The motor carries CE marking and is UL-listed (file number E163211), ensuring compliance with international safety and electromagnetic compatibility standards.

Technical Specifications

Design and Construction

The MHD112D-027-PP0-AN features a B05 flange design according to DIN 42950, allowing for flexible mounting positions (IM B5, V1, V3). The motor is balanced with a plain shaft as standard, ensuring smooth operation and compatibility with clamp-type couplings. An optional featherkey is available for applications requiring positive torque transmission.

The motor is equipped with a radial shaft sealing ring (DIN 3760, Type A) to protect against contaminants. The housing is finished with a black prime coat (RAL 9005) resistant to weathering, diluted acids, and lyes.

Application Areas

• Machine Tools: CNC milling, turning, and grinding machines

• Robotics: Articulated arms, gantry systems, and automated guided vehicles (AGVs)

• Packaging Machinery: High-speed filling, labeling, and wrapping systems

• Printing and Paper Processing: Web tension control and precision positioning

• Material Handling: Conveyors, lifts, and automated storage systems

Integration and Control

The MHD112D-027-PP0-AN is designed for use with Rexroth Indramat digital drive controllers (e.g., HDC, HDS series). The motor’s encoder system supports automatic identification and parameter loading, reducing commissioning time and minimizing errors.

The motor can be ordered with pre-assembled cable sets for power and feedback, available in various lengths and connector configurations to simplify installation.

Environmental and Operational Limits

• Ambient Temperature: 0°C to +45°C (derating required beyond this range)

• Altitude: Up to 1000 m above sea level (derating applied above)

• Vibration and Shock: Compliant with IEC 60721-3-3 for stationary use

• Cooling: Natural convection (standard), forced air, or liquid cooling options

Ordering and Support

The motor can be ordered with optional accessories such:

• Blower units for enhanced cooling

• Holding brake for safety compliance

• Sealing air connector for improved ingress protection

• Liquid cooling kit for high-duty cycles

Comprehensive documentation, including dimensional drawings, connection diagrams, and technical data, is available under document reference DOK-MOTOR-MHD*****-PRO5-EN-P.

Conclusion

The Bosch Rexroth MHD112D-027-PP0-AN synchronous servo motor represents a blend of high performance, durability, and ease of integration. Its robust design, advanced feedback system, and flexibility in cooling and protection make it a reliable choice for demanding motion control applications across various industries.

With its global certifications and support network, this motor ensures not only high operational performance but also long-term reliability and serviceability.