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The robotics industry is entering a period of rapid development. As a core component, the robot joint motor directly determines the robot’s motion capability and breadth of application.
Joint motors require an extremely lightweight design and high energy density output capacity. Ensure that the robot can overcome various complex environments and challenges during movement.
The core role of Robot Joint Motor
As a key component for the robot to achieve multi-degree-of-freedom motion, the joint drive connects the power and signal transmission of each module of the robot.
| Function | Importance |
|---|---|
| Drive | Powers every movement of a robot, determining its motion patterns and flexibility. |
| Load | Supports the robot’s weight and external loads, ensuring stability and reliability. |
| Control | Enables accurate positioning and dynamic adjustments for robotic actions. |
2024 Leading Robotics Companies
1.Unitree Robotics (宇树科技)
Main Products: Robot dog B2-W, Humanoid robot H1 series.
Core Competence: An industry-leading electric drive robot integration company, specializing in ultra-high degree of freedom integrated robot dogs.
2.Boston Dynamics
Main Products: Spot series robot dog and Atlas series robot.
Core Competence: Known for its world-leading dynamic control technology and environmental adaptability, supporting complex and dynamic robot movements.
3.Agibot (智元机器人)
Main Products: AgiBot A2-W.
Core Competence: Known for its world-leading dynamic control technology and environmental adaptability, supporting complex and dynamic robot movements.
4.Tesla Robot – Optimus
Main Products: Optimus.
Core Competence: Humanoid robots designed for repetitive tasks and human-machine interaction in industrial and home environments.
Robot Joint Motor Technological innovation
| Innovation | Impact |
| Lightweight Materials | Enhances motor density and reduces robot load with strong, light materials. |
| Intelligent Control Systems | Boosts precision and decision-making in robotic joints using AI algorithms. |
| Low-Noise High-Precision Gears | Ensures quiet operation with high accuracy and reliability. |
| High Energy Density Electric Drive | Provides sustained high-performance power with efficient energy use. |
SPC-Seires Robot Joint Motor from SGMADA
Structural design of SPC Robot Joint Motor
SPC-Series Robot Joint Motor Technical Features
1.Lightweight design
SPC-Series We use optimized materials to significantly reduce the weight of the motor while maintaining the motor’s high strength.
SPC-80: 320g
SPC-120: 1980g
2.Highly integrated dimensions
Our SPC series integrates the outer rotor motor and planetary gearbox into an integrated design. The space size of the motor module is greatly compressed, making it perfectly adapted to the space requirements of the robot joints.
3.High power density
The core design concept of the SPC series is to achieve higher power output in a compact size to adapt to the limited space requirements of robot joints.
4.Precision planetary gear system
Adopt high-precision gear design, high-precision gear backlash and low transmission error.
5.Dual encoder design
Built-in 14-bit motor encoder and flange encoder provide high-precision position feedback to ensure precise control.
6.High performance magnets
High-performance rare earth magnets are used to increase torque density and optimize dynamic response.
7.External planetary gear system
The SPC series can further reduce the motor speed and increase the motor torque through the external planetary gear structure. If customers need a joint motor with higher torque, they can consult SGMADA for detailed solutions.
SPC-80 Technical Data
| Parameter | Specification |
| Rated Voltage | 24V |
| Rated Speed | 240 rpm |
| Rated Angular Velocity | 25.1 rad/s |
| Rated Load Current | 5.5 Amp |
| Dual Absolute Encoder | 14 bit Motor – 14 bit Flange |
| Gear Type | Planet |
| Gear Ratio | 1:8 |
| Transmission Backlash | 25° |
| Driving Mode | FOC |
| Phase Resistance | 0.45Ω |
| Motor Inductance | 200 – 350 uH |
| Back EMF of Motor | 7.2 Vrms/Krpm |
| Insulation Class | Level B |
| Operating Temperature | -20℃ – 50℃ |
| Waterproof Protection Level | IP 51 |
Products: SPC-80 Robot Joint Motor
SPC-120 Technical Data
| Parameter | Specification |
| Rated Voltage | 48V DC |
| Rated Speed | 180 rpm |
| Rated Angular Velocity | 18.85 rad/s |
| Rated Load Current | 26 Amp |
| Dual Absolute Encoder | 14 bit Motor – 14 bit Flange |
| Gear Type | Planet |
| Gear Ratio | 1:8 |
| Transmission Backlash | 25′ |
| Driving Mode | FOC |
| Phase Resistance | 0.28Ω |
| Motor Inductance | 220 uH |
| Back EMF of Motor | 17 Vrms/rpm |
| Insulation Class | Level B |
| Operating Temperature | -20℃ – 50℃ |
| Waterproof Protection Level | IP 51 |
Products: SPC-120 Robot Joint Motor
