Rexroth MHD112D-027-PP0-BN Synchronous Servo Motor
Overview
The Rexroth MHD112D-027-PP0-BN is a high-performance synchronous servo motor designed for demanding industrial applications. Part of the MHD series by Bosch Rexroth, this motor combines robust construction, precise control, and high dynamic response, making it ideal for use in automation, machine tools, packaging, printing, and handling systems. With its advanced design and integration capabilities, the MHD112D-027-PP0-BN ensures reliable operation even under harsh environmental conditions.
Key Features
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High Torque Density: Delivers high continuous and peak torque in a compact design.
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IP65 Protection: Fully enclosed housing protects against dust and water jets, suitable for challenging environments.
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Permanent Magnet Technology: Brushless design ensures maintenance-free operation and long service life.
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Integrated Encoder: Provides high-resolution feedback for precise motion control.
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Multiple Cooling Options: Can be used with natural convection, surface cooling, or liquid cooling for optimized thermal performance.
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Holding Brake Option: Includes an electrically released brake for safe operation in vertical applications or emergency stops.
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Compliance with International Standards: Designed in accordance with DIN, EN, and IEC standards.
Technical Specifications
The MHD112D-027-PP0-BN is part of the MHD112 series, which is known for its high torque and versatility. Below is a summary of its key technical parameters:
| Parameter | Value | Unit |
| Continuous Torque (Standstill) | 48.0 (60K) / 52.0 (100K) | Nm |
| Peak Torque | ≈180 (theoretical max) | Nm |
| Rated Speed | Dependent on winding and cooling | min⁻¹ |
| Max Speed | 4500 | min⁻¹ |
| Rated Current | See winding-specific data | A (RMS) |
| Peak Current | See winding-specific data | A (crest) |
| Voltage Constant | ~110 V/1000 min⁻¹ | V/1000 min⁻¹ |
| Torque Constant | ~1.2 Nm/A | Nm/A |
| Rotor Inertia | ~220 x 10⁻⁴ | kg·m² |
| Motor Mass | ~65 (without brake and blower) | kg |
| Protection Class | IP65 | - |
| Insulation Class | F | - |
| Holding Brake Torque | 45 Nm (optional) | Nm |
| Shaft Option | Keyway per DIN 6885 | - |
| Encoder Type | Digital servo feedback (HSF) or multiturn absolute | - |
Design and Construction
The MHD112D motor features a rugged housing made of high-quality aluminum, providing excellent heat dissipation and mechanical stability. The flange and shaft are manufactured to DIN standards, ensuring compatibility with standard mechanical components. The motor is available with either a plain shaft or a keyed shaft (DIN 6885), and includes a shaft sealing ring for enhanced protection.
The integrated encoder system supports high-resolution position feedback, enabling precise speed and position control when used with compatible Rexroth drive controllers such as HDS, HVR, or DKC series.
Cooling and Thermal Management
The motor supports multiple cooling methods:
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Natural Convection: For standard applications.
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Surface Cooling: Via optional blower units for increased continuous torque.
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Liquid Cooling: For high-duty cycles and extreme environments.
The thermal data provided in the documentation includes both 60K (insulated mounting) and 100K (non-insulated mounting) curves, allowing accurate derating calculations based on installation conditions.
Application Areas
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Machine Tools: Milling, grinding, turning centers.
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Printing and Paper Processing: High-speed presses, roll handling.
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Packaging Machines: Filling, labeling, wrapping.
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Automation and Robotics: Pick-and-place, assembly, transfer systems.
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Material Handling: Conveyors, lifts, positioning tables.
Ordering Information
The type code breaks down as follows:
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MHD112: Motor series and frame size
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D: Motor length (D = long frame, high torque)
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027: Winding code
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P: Shaft with keyway
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P: Holding brake included
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0: Output direction (default)
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B: Housing type for natural convection
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N: Standard reference
Benefits
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High Dynamic Response: Excellent torque-to-inertia ratio enables rapid acceleration and deceleration.
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Overload Capability: Designed to handle peak loads without demagnetization.
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Easy Integration: Standard B5 flange and shaft dimensions simplify mechanical mounting.
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Flexible Connectivity: Connectors for power, encoder, and optional blower are designed for quick and secure installation.
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Global Compliance: Meets CE and UL standards, suitable for worldwide use.
Conclusion
The Rexroth MHD112D-027-PP0-BN synchronous servo motor is a robust, high-performance solution for industrial motion control applications. Its combination of high torque, durability, and flexibility makes it a preferred choice for engineers and system integrators seeking reliability and precision. Whether used in manufacturing, packaging, or automation, this motor delivers consistent performance under demanding conditions.
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Precision Control with Rexroth MHD112D-027-PP0-BN Synchronous Servo Motor for Industrial Applications Images
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