Bosch Rexroth MHD112C-058-PG3-AN Servo Motor Product Introduction

Overview

The Bosch Rexroth MHD112C-058-PG3-AN (Order Code: R911288241) is a high-precision synchronous servo motor designed for demanding industrial applications requiring superior dynamic performance and positional accuracy. Part of the advanced MHD C-series, this motor integrates cutting-edge encoder technology with robust mechanical design to deliver reliable operation in harsh environments. Its IP65-rated housing, high torque density, and adaptive cooling system make it ideal for motion control systems in automation, robotics, and renewable energy sectors.

Technical Specifications

Key Features

1. Advanced Encoder Technology:
   • Integrated multi-turn absolute encoder provides sub-arcsecond positioning accuracy.
   • 20-bit resolution enables precise trajectory tracking in CNC systems.
2. High Dynamic Performance:
   • Rated torque of 27.3 Nm and peak torque of 102 Nm support rapid acceleration/deceleration.
   • Electronic commutation ensures zero cogging torque for smooth motion.
3. Robust Thermal Design:
   • Natural/surface cooling options adapt to varying thermal loads.
   • Overtemperature monitoring with 60K thermal margin prevents motor damage.
4. Industrial Durability:
   • IP65-rated housing protects against dust and liquid ingress.
   • Keyed shaft with dual seals withstands harsh washdown environments.
5. Energy Efficiency:
   • High torque-to-current ratio (2.18 Nm/A) minimizes operational costs.
   • Low no-load current (<0.5 A) reduces standby power consumption.

Applications

The MHD112C-058-PG3-AN excels in:

• Robotics:
  • Powers industrial robot arms with 6-axis precision in automotive assembly lines.
  • Enables collaborative robots (cobots) to handle delicate tasks with sub-millimeter accuracy.
• Renewable Energy:
  • Controls hydraulic actuators in solar tracking systems.
  • Drives pitch mechanisms in wind turbines for optimal power generation.
• CNC Machining:
  • Provides spindle control in 5-axis milling machines for aerospace components.
  • Ensures synchronous motion in multi-spindle lathes.
• Packaging Systems:
  • Drives delta robots for high-speed pick-and-place operations.
  • Controls conveyor belts with variable frequency drives for flexible packaging lines.
• Material Handling:
  • Powers AGV steering systems in logistics warehouses.
  • Enables precise load positioning in crane lifting mechanisms.

Design Advantages

• Compact Integration:
  • Frame size 112 and length C allow installation in confined spaces.
  • Flange design compliant with DIN 42948 ensures compatibility with standard mounts.
• Connectivity:
  • Supports EtherCAT, SERCOS, and PROFINET protocols for seamless integration with PLCs.
  • Compatible with Bosch Rexroth’s IndraDrive ML controllers.
• Thermal Stability:
  • Operates reliably at altitudes up to 1000m MSL.
  • Maintains performance in 40°C ambient temperatures without derating.
• Serviceability:
  • Modular encoder design allows quick replacement without motor disassembly.
  • Diagnostic LEDs simplify fault detection.

Maintenance and Reliability

• Long Service Life:
  • Sealed bearings rated for 20,000 hours of continuous operation.
  • Corrosion-resistant housing withstands chemical exposure.
• Ease of Maintenance:
  • Predictive maintenance alerts via encoder feedback.
  • Tool-less access to cooling fins for debris removal.

Comparison with Previous Models

Unlike earlier MHD112B series motors, the MHD112C-058-PG3-AN features:

• Higher Torque Density: 27.3 Nm vs. 16.6 Nm in comparable models.
• Advanced Encoder: Multi-turn absolute encoder vs. single-turn incremental encoder.
• Enhanced Cooling: Surface cooling option for higher ambient temperatures.
• Extended Speed Range: 4000 max RPM vs. 3500 RPM in previous versions.

Conclusion

The Bosch Rexroth MHD112C-058-PG3-AN servo motor represents a pinnacle of precision engineering, combining high torque output, advanced encoder technology, and rugged industrial design. Its versatility makes it suitable for applications ranging from robotics to renewable energy, where accuracy and reliability are paramount. With proven performance in demanding environments, this motor exemplifies Bosch Rexroth’s leadership in motion control innovation.

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