Description
1. Overview
Rexroth MKD071B-061-KG0-KN (Part No.: R911260467) is a high-performance permanent magnet synchronous servo motor of the Rexroth Indramat MKD series, serving as the core power component for high-precision industrial motion control. Adopting 071 frame size B extended body, 061 standard winding, non-brake structure, keyway shaft output and side wiring design, it is equipped with resolver absolute feedback system.
Featuring high torque density, fast dynamic response, high positioning accuracy, low operating noise and strong overload resistance, the motor achieves IP65 protection grade and adapts to complex industrial working conditions with dust, splash water and electromagnetic interference. Fully compatible with Rexroth IndraDrive servo drives, it is widely used in CNC machine tools, automated production lines, robot joints, precision cutting, packaging and printing equipment for new machine matching, old equipment replacement and technical upgrading projects.
2. Technical Features
1. High Dynamic Precision Motion Control
Built-in high-precision resolver absolute feedback system supports multi-turn absolute position detection over 4096 revolutions. It realizes accurate axis positioning without power-on homing and eliminates positioning deviation and repeated motion errors. Combined with full closed-loop control of servo drives, it ensures ultra-low speed fluctuation and high repeat positioning accuracy, meeting strict precision requirements of precision machining and accurate transmission scenarios.
2. High Torque Density & Stable Power Output
Optimized magnetic circuit structure with 071B extended frame and 061 dedicated winding delivers stable high torque output in a compact size, realizing jitter-free low-speed operation and no howling at high speed. It features excellent overload resistance and withstands frequent start-stop and fluctuating load conditions with linear power output, ensuring stable and accurate equipment operation.
3. Brake-Free Lightweight & Strong Versatility
As a basic non-brake servo motor, it features simplified structure, light weight and sensitive response without energy loss of braking mechanism. The standard keyway output shaft with shaft seal ensures stable torque transmission and dust/oil resistance. It is perfectly suitable for most horizontal transmission, low-inertia shutdown and conventional positioning scenarios with wide universal adaptability.
4. IP65 High Protection Grade for Wide Condition Adaptability
Integrated fully sealed industrial structure protects the stator, rotor and wiring cavity from dust, splash water and oil contamination. With strong electromagnetic interference resistance and mechanical vibration resistance, it supports long-term continuous stable operation in complex industrial workshops with low failure rate and long service life.
5. Natural Air Cooling for Sustained High-Performance Operation
Integrated heat dissipation rib structure realizes efficient natural air cooling with excellent temperature rise control. No torque attenuation occurs under long-term full-load and frequent start-stop working conditions. Without vulnerable cooling fans, it avoids fan blockage and dust accumulation failures, greatly reducing operation and maintenance costs and adapting to 24/7 continuous mass production lines.
6. Original Protocol Matching & Full Compatibility
Natively compatible with all Rexroth IndraDrive servo drive systems with fully matched feedback protocol, electrical parameters and control logic, realizing plug-and-play operation without complex parameter adaptation. It supports high-speed bus linkage and precise three-loop control of torque, speed and position, and is also compatible with most third-party servo control systems.
3. Technical Specifications
3.1 Basic Parameters
Model: MKD071B-061-KG0-KN; Part Number: R911260467; Brand: Rexroth (Indramat); Product Type: Permanent Magnet Synchronous Servo Motor; Frame Size: 071, B extended body; Winding Code: 061; Brake Configuration: Without Holding Brake; Feedback Type: Resolver Absolute Feedback; Output Shaft: Standard Keyway Shaft with Shaft Seal; Wiring Mode: Side Wiring; Protection Grade: IP65; Cooling Method: Natural Air Cooling; Core Applications: High-precision equipment driving, automated line transmission, old motor replacement, equipment precision upgrading.
3.2 Performance Parameters
Operating Characteristics: High dynamic response, low speed ripple, high positioning accuracy; Feedback Precision: Multi-turn absolute position detection (＞4096 revolutions), no homing required; Overload Capacity: Supports short-term impact overload and frequent start-stop operation; Operating Noise: Low-noise stable operation without low-speed jitter or high-speed howling; Control Adaptation: Precise three-loop control of position, speed and torque; Stability: No torque attenuation or abnormal temperature rise under long-term full-load operation.
3.3 Electrical Parameters
Compatible Drive System: Rexroth IndraDrive Series Servo Drives; Power Supply Standard: Industrial servo standard power supply; Winding Characteristics: 061 winding balances torque and speed performance for conventional speed range; Feedback Signal: Resolver analog signal with strong anti-interference and stable transmission; Electrical Stability: Resists industrial electromagnetic interference with zero signal drift and control lag.
3.4 Mechanical Parameters
Body Structure: 071B extended compact size with high torque density; Output Shaft: Standard keyway shaft, compatible with conventional couplings, reducers and transmission mechanisms; Sealing Structure: Full shaft and cavity sealing for dust, water and oil resistance; Mounting Method: Universal flange vertical/horizontal mounting for various equipment frames; Mechanical Performance: High rigidity, vibration resistance and small transmission backlash for precision transmission scenarios.
3.5 Environmental Parameters
Operating Temperature: -20℃～+60℃; Storage & Transport Temperature: -30℃～+80℃; Operating Humidity: 5%～95%RH (non-condensing, no corrosive gas); Environmental Resistance: Dust-proof, splash-proof, EMI-resistant, slight vibration-resistant; Operation Mode: 24/7 year-round unattended continuous operation; Applicable Scenarios: Industrial workshops, automated production lines, precision equipment rooms and other standard industrial environments.
4. Operating Principle
The Rexroth MKD071B-061-KG0-KN servo motor operates based on the closed-loop working mechanism: Drive Command Reception → Stator Excitation → Permanent Magnet Rotor Synchronous Rotation → Mechanical Torque Output → Resolver Real-Time Position Feedback → Closed-Loop Precision Correction. After receiving speed, position and torque commands from the upper PLC or motion controller, the servo drive outputs precise variable-frequency and variable-voltage excitation current to the motor stator to generate a rotating magnetic field, driving the permanent magnet rotor to rotate synchronously and convert electric energy into high-precision mechanical kinetic energy for equipment transmission.
The built-in resolver collects real-time rotor speed, angle and absolute position data and feeds back to the servo drive to form full closed-loop dynamic regulation. The drive compares the command value with the actual operating value, corrects excitation parameters in milliseconds, and accurately compensates speed fluctuation, position deviation and load disturbance to realize high-precision positioning, constant torque output and stable speed regulation. The brake-free design ensures sensitive start-stop response. Combined with IP65 sealing and efficient heat dissipation structure, it guarantees long-term high-speed, high-precision and high-stability continuous operation to meet strict industrial motion control requirements.
5. Application Scenarios
1. Core Driving for Precision CNC Machine Tools
Widely applied in CNC lathes, milling machines, machining centers and engraving machines as feed shaft and auxiliary shaft power units. It ensures high machining accuracy and workpiece consistency relying on high positioning precision and jitter-free operation, suitable for precision metal cutting and fine processing scenarios.
2. Complete Transmission for Automated Production Lines
Suitable for assembly line conveying, precision cutting, positioning transferring, sorting handling and automatic assembly equipment. Its high dynamic response and frequent start-stop resistance meet the requirements of high-speed and continuous production, improving operational efficiency and stability of automated lines.
3. Power System for Packaging & Printing Equipment
Applied in high-speed packaging machines, laminating machines, printing machines and die-cutting machines. It accurately matches high-speed synchronous transmission, precision positioning cutting and constant-speed feeding working conditions, eliminating traditional motor speed instability and positioning deviation to ensure product forming accuracy and production yield.
4. Technical Renovation & Replacement of Old Automation Equipment
Fully compatible with old Rexroth servo motors in electrical protocol and mechanical mounting size without frame, transmission or control system modification. It quickly repairs equipment faults such as inaccurate positioning, insufficient power, operating jitter and shutdown errors, realizing low-cost precision upgrading and production capacity recovery.
5. Supporting for Universal High-Precision Automation Equipment
Adapted to robot auxiliary joints, laser processing equipment, precision testing equipment and high-end automated transmission equipment. It meets various industrial high-precision, high-dynamic and high-stability motion control requirements with high torque density, accurate positioning and strong condition adaptability.
