Rexroth MHD071B-035-PP0-UN Synchronous Servo Motor: Next-Gen Precision for Industrial Automation

Overview

The Rexroth MHD071B-035-PP0-UN (Order Code: R911282844) redefines synchronous servo motor performance with its advanced electronic commutation technology and robust engineering. Designed for high-dynamic applications, this motor combines industry-leading torque density, energy efficiency, and operational reliability. It is tailored for CNC machining, robotics, and packaging systems where precision and durability are non-negotiable.

Technical Specifications

Key Features

1. Electronic Commutation: Enables wide speed range utilization (0–6,000 rpm) and high repeatability in start-stop cycles.
2. High Torque Density: Delivers 28.6 Nm continuous torque in a compact 8.8 kg frame, outperforming conventional servo designs.
3. Thermal Management: Integrated and lifetime-lubricated bearings ensure maintenance-free operation.
4. Precision Feedback: Absolute encoder with >4,096 revolutions resolution for nanoscale positioning accuracy.
5. Cabling Efficiency: PP0 connector system supports 270° turnable power connection for flexible installation.

Competitive Comparison

Why Choose MHD071B-035-PP0-UN?

• Superior Torque Reserve: 15% higher continuous torque than Siemens 1FK7 in the same class.
• Environmental Resilience: IP65 rating ensures reliable operation in washdown environments, unlike Panasonic A5’s IP54.
• Dynamic Performance: 180% overload capacity supports demanding acceleration profiles.
• Energy Efficiency: 93% efficiency rating reduces operational costs compared to competitors’ 88–90%.

Application Areas

• CNC Machining: Spindle drives for high-speed milling and turning.
• Robotics: Joint actuators in collaborative robots (Cobots).
• Packaging: Continuous motion systems with frequent start-stop cycles.
• Material Handling: Conveyor systems requiring precise tension control.
• Food & Beverage: Hygenic environments with occasional washdown.

Selection Guide for Buyers

1. Torque & Speed Prioritization

• High-Torque Applications: Select MHD071B-035-PP0-UN for continuous loads exceeding 25 Nm (e.g., robotic arms).
• High-Speed Needs: Utilize the 6,000 rpm peak speed for spindle applications.

2. Environmental Adaptability

• Wet/Dusty Environments: IP65 rating makes it ideal for packaging or food processing.
• Temperature Extremes: Derate torque by 5% if ambient temperatures exceed 40°C.

3. Integration Compatibility

• Drive Matching: Pair with Rexroth IndraDrive controllers for synchronized multi-axis control.
• Mounting Flexibility: 115 mm flange and keyed shaft simplify retrofitting.

4. Cost-Benefit Analysis

• Maintenance Savings: Brushless design eliminates replacement costs.
• Energy Savings: 5% higher efficiency than Panasonic A5 reduces long-term expenses.

Ordering Information

• Model: MHD071B-035-PP0-UN
• Order Code: R911282844
• Accessories:
  • Encoder cables (e.g., R911278901)
  • Mounting kits (Flange 115 mm adapters)
  • Forced-air cooling kits (Part No. R911301234)

Conclusion

The Rexroth MHD071B-035-PP0-UN sets a new benchmark for servo motor performance, offering unmatched torque density, environmental resilience, and energy efficiency. Its electronic commutation technology and IP65 protection make it a superior choice for industries demanding precision and reliability.