Description
1. Product Overview
Rexroth MHD093C-035-NGO-BN is a high-performance permanent magnet synchronous servo motor of Bosch Rexroth MHD series. It is a core compact drive component for industrial high-precision and high-dynamic applications, designed for precision positioning, high-speed reciprocating motion and heavy-load precise servo control on automated production lines. Adopting mature permanent magnet synchronous drive technology from Rexroth, the motor integrates high-density NdFeB permanent magnets, high-precision grating feedback, low-inertia rotor structure and fully enclosed housing. It features fast response, high positioning accuracy, high torque density, low operating temperature rise, vibration-free low-speed operation and excellent high-speed stability.
This product strictly complies with German industrial DIN standards and Rexroth’s original stringent quality control system. It has passed a full set of industrial-grade tests including full-load durability, high-low temperature cycling, continuous high-speed operation, vibration and shock, dust & water resistance, and electromagnetic compatibility. It can operate stably for a long time under harsh industrial conditions such as 7×24-hour non-stop continuous operation, frequent start-stop, high-speed reversing, dynamic heavy load, dusty & humid environment and persistent equipment vibration. It is fully compatible with the full range of Rexroth IndraDrive servo drive systems in both hardware and software, and supports high-precision position loop, speed loop and torque loop closed-loop control. Widely applied in high-end automated equipment, precision machine tools, robot joints, printing & packaging machinery, laser processing equipment, logistics sorting automation and non-standard intelligent equipment, it effectively solves common industrial problems including positioning deviation, low-speed crawling, high-speed jitter, insufficient torque and frequent overload alarms, ensuring high-speed, high-precision, stable and long-term operation of automated equipment.
2. Functional Features
2.1 Compact Design with High Torque Density for Limited Installation Space
The MHD093C adopts a lightweight compact structure. Small in size yet high in torque, its torque density exceeds that of ordinary servo motors of the same specification. It can deliver stable continuous rated torque and instantaneous peak torque without occupying excessive installation space, perfectly meeting layout requirements of precision machine tools, small intelligent equipment and compact automated racks. It effectively simplifies equipment structure and optimizes overall space layout while balancing lightweight design and heavy-duty driving performance.
2.2 Low-inertia & High Dynamic Response with No Lag During High-speed Start-Stop and Reversing
Equipped with a precision lightweight low-inertia rotor structure, the rotor features ultra-high response sensitivity to realize ultra-fast start-stop, instantaneous acceleration/deceleration and high-frequency reversing. Its dynamic tracking performance is outstanding, accurately matching process requirements of high-speed reciprocation, high-frequency cycling and instant variable loads for high-end automated equipment. It eliminates drawbacks of traditional motors such as start-stop lag, reversing deviation and slow dynamic response, greatly improving equipment cycle time and production efficiency for high-speed precision automated manufacturing processes.
2.3 Smooth Low-speed Operation without Jitter for Zero-deviation High-precision Positioning
Optimized sine-wave winding technology and magnetic circuit design deliver uniform magnetic field and extremely low torque ripple. The motor runs without crawling, jitter or speed fluctuation at low speeds. Combined with the original high-precision encoder feedback system, it achieves micron-level precise positioning, speed regulation and torque output, perfectly suited for processes requiring ultra-high motion precision and smoothness such as precision machining, cutting, accurate alignment and micro feed, guaranteeing processing accuracy and consistent product quality.
2.4 Fully Enclosed Industrial Construction with Strong Adaptability to Harsh Conditions
The whole machine adopts an integrated fully enclosed cast aluminum housing with high-standard dustproof and waterproof protection. It effectively prevents damage caused by dust accumulation, moisture, light oil contamination and debris erosion in industrial sites. Reinforced housing structure provides excellent vibration and shock resistance, tolerating long-term high-frequency vibration, mechanical impact and alternating temperature changes. It is less prone to structural loosening, seal failure, water ingress and dust penetration, ensuring stable long-term motor operation.
2.5 Low Noise & Low Temperature Rise for Long Continuous Durable Operation
Optimized stator winding and heat dissipation channel structure together with high thermal conductivity housing ensure controllable and uniform temperature rise without local overheating under full-load, high-speed and frequent start-stop conditions. The motor produces low electromagnetic and mechanical noise for quiet operation, suitable for quiet workshops and precision equipment applications. Core components and permanent magnets are made of industrial high-temperature resistant and anti-aging materials, supporting 7×24-hour non-stop full-load operation all year round with no torque attenuation, precision drift or performance degradation, delivering outstanding durability and stability.
2.6 Original High-precision Encoder Feedback for Accurate and Reliable Closed-loop Control
Fitted with Rexroth exclusive high-precision incremental/absolute encoder (NGO configuration). The encoder features high signal acquisition resolution, strong anti-interference capability and ultra-low feedback delay. It collects real-time motor speed, rotation angle and position data to realize full closed-loop precise control together with the servo drive. It effectively prevents position loss, speed drift and feedback distortion, maintaining long-term repeat positioning accuracy and motion stability of equipment to satisfy high-precision automated closed-loop control requirements.
3. Technical Parameters
3.1 Core Adaptation Parameters
Model: MHD093C-035-NGO-BN Brand: Bosch Rexroth Series: MHD Series High-performance Permanent Magnet Synchronous Servo Motor Type: Industrial High-precision Closed-loop Servo Drive Motor Compatible Drives: Full series of Rexroth IndraDrive servo drives Application Scenarios: Precision machine tools, automated production lines, robots, laser equipment, packaging & printing, intelligent non-standard equipment Core Functions: High-precision positioning, high-speed dynamic drive, constant torque output, closed-loop servo control, high-frequency start-stop and reversing Application Purpose: Complete machine set for new equipment, technical renovation & replacement of old servo motors, equipment precision upgrade, core spare parts stock for production lines
3.2 Electrical Performance Parameters
Motor Type: Three-phase permanent magnet synchronous servo motor Rated Power: Suitable for medium & small power precision driving applications with stable and sufficient power output Rated Speed: Standard industrial servo rated speed for continuous high-speed operation Max Speed: High speed range to meet high-speed process cycle requirements Rated Torque: Continuous constant torque output without attenuation under heavy load Peak Torque: Instant high torque output to cope with startup impact and transient heavy loads Winding Characteristics: Optimized sine wave winding, low torque ripple, low heat generation and high efficiency Operating Voltage: Compatible with standard industrial servo drive voltage specification
3.3 Feedback Encoder Parameters
Encoder Configuration: NGO standard high-precision encoder Feedback Type: Real-time closed-loop feedback of high-precision position / speed Resolution: Ultra-high acquisition resolution to guarantee micron-level positioning accuracy Signal Characteristics: Anti-interference, low delay, no signal drift, adapted to complex industrial electromagnetic environments Functional Advantages: Power-off position memory, precise traceability and repeat positioning without deviation
3.4 Mechanical Structure Parameters
Frame Specification: 093 standard compact frame, lightweight and small size Rotor Structure: Low-inertia precision rotor with high dynamic response Output Shaft: Standard industrial output shaft, compatible with universal mounting of couplings, lead screws and pulleys Housing Material: High-strength cast aluminum housing, lightweight, corrosion-resistant and anti-aging Protection Class: High industrial standard dustproof and waterproof, suitable for complex workshop conditions Mounting Method: Standard flange mounting, compatible with general installation structure of automated equipment
3.5 Operating Condition Parameters
Operation Mode: Supports 7×24-hour non-stop full-load continuous operation and high-frequency start-stop cycling Control Modes: Compatible with position control, speed control and torque control Dynamic Characteristics: Rapid acceleration & deceleration response, no lag or jitter during reversing Operating Noise: Low electromagnetic and mechanical noise, stable and quiet operation Temperature Rise Characteristic: Low temperature rise under full load, uniform heat dissipation, no power derating due to overheating
3.6 Environmental Adaptation Parameters
Operating Temperature: 0℃～+40℃, standard industrial ambient temperature Storage Temperature: -20℃～+70℃ Operating Humidity: 5%～95%RH (non-condensing) Environmental Resistance: Tolerates dust, light oil contamination, humidity, equipment vibration and electromagnetic interference Anti-aging Property: High temperature resistance, anti-oxidation and anti-fatigue, stable performance during long-term operation
4. Hardware Configuration and Structural Advantages
4.1 Core Hardware Configuration
Rexroth MHD093C-035-NGO-BN servo motor adopts exclusive industrial-grade drive architecture for Rexroth MHD series. It is equipped with high-energy-product NdFeB permanent magnets, high-precision sine stator windings, low-inertia lightweight rotor, high-strength wear-resistant bearing set, NGO high-precision encoder feedback unit and integrated heat dissipation structure. The internal magnetic circuit is finely optimized by the manufacturer to form uniform and symmetrical magnetic field, fundamentally reducing torque ripple and operating jitter. The windings are precisely wound with high-temperature resistant enameled wire featuring high insulation grade, strong current resistance and low risk of aging breakdown, suitable for long-term high-frequency full-load operation. The encoder feedback unit adopts an independent shielding structure to effectively isolate industrial electromagnetic interference and ensure accurate, distortion-free and low-delay transmission of position and speed signals. All core components are strictly screened, tested under extreme conditions and verified for durability aging by the German original factory, featuring fast dynamic response, high positioning accuracy, stable operation, low failure rate and excellent long-term anti-aging performance.
4.2 Structural Design Advantages
The motor adopts compact integrated fully enclosed housing design with small footprint, greatly saving equipment installation space and fitting compact layout of various precision automated equipment. The cast aluminum housing combines lightweight property and high mechanical strength with excellent thermal conductivity to rapidly dissipate operating heat and prevent power attenuation and high-temperature aging caused by heat accumulation. The output shaft is manufactured by precision grinding, featuring high coaxiality, wear resistance and impact resistance. It runs without eccentricity or wobble during long-time high-speed operation to guarantee stable transmission accuracy. Tight sealing structure delivers outstanding dustproof, waterproof and oil-proof performance to protect the motor from harsh workshop environments. Standard waterproof and dustproof design for wiring ports prevents short circuit and signal abnormality caused by dampness and dust ingress. The housing is fitted with standard flange mounting structure for easy assembly and firm fixation, complying with most installation specifications of automated equipment and simplifying commissioning, maintenance and replacement.
5. Working Principle
Rexroth MHD093C-035-NGO-BN permanent magnet synchronous servo motor adopts a fully closed-loop servo drive mechanism: three-phase inverter power supply from drive → stator magnetic field excitation → synchronous coupling of permanent magnet rotor → high-precision closed-loop feedback → dynamic torque speed regulation → precise position positioning, to realize high-precision, high-dynamic and highly stable motion control.
During operation, the matched IndraDrive servo drive converts industrial frequency AC power into three-phase controllable sine drive current with adjustable frequency and amplitude. The current is fed into the stator windings to generate a rotating magnetic field. The stator rotating magnetic field couples precisely with the constant magnetic field of rotor permanent magnets to drive synchronous rotation of the rotor, output stable torque and speed and drive the load to move accurately. Throughout operation, the built-in NGO high-precision encoder collects real-time rotor angle, speed, position and other operating data and feeds them back to the servo drive to form a closed control loop.
The drive compares and calculates feedback data against system set commands in real time, dynamically corrects output current, frequency and voltage, precisely regulates motor torque, speed and position, and quickly compensates load fluctuation, speed deviation and position error to realize high-speed start-stop, precise positioning, constant torque output and smooth reversing. For complex working conditions such as frequent start-stop, transient heavy load and high-speed reciprocation, relying on low-inertia rotor and optimized magnetic circuit structure, the motor rapidly responds to command changes without lag, jitter or precision drift, fully ensuring motion accuracy, dynamic performance and operational stability of automated equipment.
6. Application Scenarios
6.1 Precision Machine Tools and Laser Processing Equipment
Applied to CNC precision machine tools, laser cutting, laser engraving, precision cutting, grinding and polishing and other high-precision processing equipment as the core feed and positioning drive unit. Leveraging smooth low-speed operation, precise positioning and fast dynamic response, it guarantees processing accuracy, dimensional consistency and process stability of equipment, eliminating processing deviation, uneven texture and positioning offset to meet high-end precision manufacturing requirements.
6.2 High-speed Automated Production Line Equipment
Widely used in packaging & printing, logistics sorting, assembly lines, labeling machines, handling manipulators and other high-speed automated production lines for high-frequency start-stop, high-speed reciprocating and continuous cyclic operation. With high dynamic response, low failure rate and long-term stability, it greatly improves production line cycle time and efficiency, reduces equipment shutdown failure rate and ensures continuous mass production.
6.3 Intelligent Robots and High-end Non-standard Equipment
Suitable for small robot joint drive, precision displacement platforms, intelligent inspection equipment and high-end non-standard automated equipment. Benefiting from compact size, high torque and high-precision closed-loop control, it satisfies lightweight, precision and intelligent design requirements of equipment, realizing complex motion processes such as precise alignment, micro feed and flexible drive for R&D and mass production of high-end intelligent equipment.
6.4 Technical Renovation Replacement and Spare Parts Reserve
As a classic mainstream servo motor of Rexroth MHD series, it has strong universality and wide working condition adaptability with stable operation. It can replace old motors of the same series without modification to solve problems including degraded precision, jitter & abnormal noise, insufficient torque, frequent alarms and aging failure. Standardized mounting and drive compatibility require no mechanical modification or electric program adjustment, enabling low-cost equipment precision upgrade and system renovation. It serves as essential strategic spare parts for automation enterprises, quickly handling drive faults and securing continuous production of production lines.
