Product Introduction: Rexroth Synchronous Servo Motor MHD041A-144-PG0-UN (Order Number R911276749)

Overview

The Bosch Rexroth MHD041A-144-PG0-UN is a high-performance synchronous servo motor designed for demanding automation and industrial applications. It belongs to the well-regarded Rexroth MHD series, which combines robust construction, long service life, and outstanding dynamic performance.

As a compact, brushless AC servo motor with integrated digital feedback, this unit delivers precise positioning, high torque-to-inertia ratios, and flexibility in mounting and integration. Its versatility makes it a preferred solution in applications such as machine tools, printing and paper machinery, packaging lines, food-processing equipment, and automated handling systems.

The MHD041A-144-PG0-UN offers cost-effective automation with reliable operation, simple installation, and compatibility with Rexroth’s intelligent drive controllers, ensuring seamless system integration.

Key Features and Benefits

1. High Reliability and Maintenance-Free Design

   • Brushless construction eliminates the need for carbon brush replacement.

   • Grease-lubricated bearings are designed for their entire service life.

   • Fully enclosed housing (IP65) protects against dust, oil mist, and splashing water.

2. Excellent Dynamic Characteristics

   • Low inertia rotor with permanent magnets ensures quick acceleration and deceleration.

   • Favorable torque-to-mass ratio allows precise and rapid response in start-stop operations.

   • Wide speed-torque range with sustained peak torque capability.

3. Flexible Application Use

   • Can be installed in any mounting position.

   • Robust shaft design allows direct overhung mounting of pulleys and gears.

   • Wide range of accessories including brakes, encoders, and cable sets.

4. Easy Installation and Commissioning

   • Standardized flange design (DIN 42948) for straightforward mechanical integration.

   • Data memory integrated in the motor encoder simplifies startup with Rexroth drives.

   • Multiple cable exit orientations available to suit machine design.

5. Safety and Protection

   • Integrated temperature sensors for overload protection.

   • Complies with insulation class F for thermal stability.

   • Designed according to strict international standards for industrial drives.

Technical Data (MHD041A-144-PG0-UN)

The following table summarizes the main specifications of the motor according to Rexroth’s project planning manual:

Application Areas

The MHD041A-144-PG0-UN is engineered for applications where precision, speed, and durability are critical. Some of its primary fields of use include:

• Machine Tools: High dynamic performance enables accurate machining operations with fast feed drives and spindle positioning.

• Printing and Paper Processing: Reliable speed control ensures smooth operation in high-speed printing lines and paper transport.

• Packaging Machinery: Handles repetitive start-stop cycles with precision for filling, sealing, and labeling processes.

• Food Processing Equipment: Robust IP65 housing withstands demanding environments while maintaining hygiene and reliability.

• Automation and Handling: Suitable for robotic arms, pick-and-place systems, and assembly lines requiring fast and accurate motion.

Design and Construction

The MHD041A-144-PG0-UN is a permanent-magnet synchronous motor with electronic commutation. Its design includes:

• Rotor with Permanent Magnets: Ensures compact size with strong torque density.

• Encoder System: Digital feedback provides precise position and speed data to the drive controller.

• Stator Windings: Optimized for high efficiency and reduced energy losses.

• Sealed Bearings: Lifetime-lubricated bearings minimize maintenance requirements.

• Robust Housing: Provides both mechanical strength and environmental protection.

The motor supports continuous start-stop operations at high frequencies, making it highly suitable for automation systems with repetitive motion tasks.

Advantages for End Users

• Lower Total Cost of Ownership: Maintenance-free design reduces downtime and service costs.

• Improved Productivity: High acceleration and fast positioning speed up machine cycles.

• Enhanced Safety: Integrated overload monitoring prevents damage to the motor and connected machinery.

• Flexible Integration: Standardized mounting and cabling options simplify design and reduce setup time.

• Longevity: Rugged construction ensures durability even under demanding industrial conditions.

Ordering Information

• Product Name: Rexroth Synchronous Servo Motor MHD041A-144-PG0-UN

• Order Number: R911276749

• Series: Rexroth MHD Synchronous Motors

For system planning, ensure compatibility with Rexroth drive controllers and accessories specified in the official documentation.

Conclusion

The Bosch Rexroth MHD041A-144-PG0-UN (R911276749) is a compact yet powerful synchronous servo motor designed for precision-driven industrial applications. Combining maintenance-free operation, excellent dynamics, and robust environmental protection, it provides a reliable and long-lasting solution for automation.

Its optimized design and technical performance make it an ideal choice for OEMs, system integrators, and end-users looking for high productivity and efficiency in machine tools, packaging, printing, and automation systems.

This motor exemplifies Rexroth’s engineering excellence—delivering quality, performance, and reliability in one package.