MG-H79-31 Hollow-Shaft Motor
group nameHollow-Shaft Motor
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Min Order1 piece
brand nameSolismotor Custom Robot Joint Drives
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update timeFri, 28 Aug 2026 13:04:21 GMT
Paramtents
Model MG-H79-31
Rated Torque 1N·m
Peak Torque 2.5N·m
Rated Power 54W
Encoder 20-Bit, Dual Support
Communication CAN / TTL Configuration
Protection IP54
Weight ~420g
Repeatability ±0.004°
Packging & Delivery
Min Order1 piece
Briefing
Detailed
The MG-H79-31 is a high-precision hollow-shaft brushless servo motor designed for robot joints, precision rotary stages, optical equipment, and automated rotary mechanisms.It integrates a brushless motor, servo driver, 20-bit single-turn absolute encoder, and multiple communication interfaces into a compact housing. With dimensions of Ø79 × 32.6 mm and a weight of approximately 420 g, the motor delivers 1 N·m rated torque and up to 2.5 N·m peak torque, balancing torque density, positioning accuracy, and integration efficiency. The MG-H79-31 features a Ø31 mm hollow bore for routing power cables, signal wires, optical fibers, or pneumatic lines through the rotation axis. It supports CAN FD, PWM, and RS485 interfaces, together with position, speed, and current/torque closed-loop control. The MG-H79-31 has an outer diameter of 79 mm and an axial thickness of only 32.6 mm. Its flat hollow-shaft structure is easy to integrate into robot joints, precision rotary stages, and space-constrained equipment.The motor, driver, encoder, and communication interfaces are integrated into a single unit, reducing external control boards, mounting brackets, and connecting cables. The motor provides a minimum Ø31 mm hollow bore for routing power cables, communication wires, optical fibers, pneumatic lines, or mechanical components through the rotation axis.The large hollow passage simplifies internal cable routing and reduces interference from external wiring, making it suitable for robot joints, optical stages, laser scanners, and continuous rotary mechanisms. The MG-H79-31 delivers 1 N·m rated torque and up to 2.5 N·m peak torque, supporting continuous rotation, position holding, rapid starts and stops, and short-duration high-load operation.Continuous current is below 1.5 A, while peak current can reach 10 A. Rated power is 54 W, with instantaneous power of up to 360 W for dynamic acceleration. The specified repeatability and absolute positioning accuracy are both ±0.004°, making the motor suitable for precision positioning and angle-control applications.Its speed variation rate is below ±0.5%, while the specified speed resolution is 0.0001 Hz, supporting smooth and stable low-speed operation. The motor integrates a 20-bit single-turn absolute encoder, providing detailed angular feedback for position, speed, and torque control.The absolute encoder allows the controller to identify the single-turn rotor position at startup, reducing the need for conventional homing procedures. The specified operating noise is below 50 dB, making the motor suitable for laboratory equipment, optical instruments, service robots, and other noise-sensitive systems. Joint actuation for bipedal and full-body humanoid platforms Safe, precise motion for cobot arms and grippers Power assist and rehabilitation exoskeleton systems Robotics labs, university projects, and prototyping Surgical robots and rehabilitation equipment Automated guided vehicles and smart manufacturingMG-H79-31 Hollow-Shaft Motor
Product Advantages
Compact Ø79 mm Integrated Design
Ø31 mm Large Hollow Bore
2.5 N·m Peak Torque
±0.004° Positioning Accuracy
20-Bit Absolute Encoder
Low-Noise, Low-Maintenance Operation
Technical Specifications
Key Applications
Humanoid Robots
Collaborative Robots
Exoskeletons
Education & Research
Medical Assistants
Smart Automation
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