Description
High-Torque Robot Joint Actuator for Advanced Motion Control
The HAITAI HT8108 Series Robot Joint Actuator is a high-performance integrated servo actuator engineered for humanoid robots, quadruped robots, robotic arms, exoskeletons, and advanced automation systems. Combining a brushless DC servo motor, precision planetary gearbox, magnetic encoder, and CAN bus servo driver into one compact module, the HT8108 delivers high torque density, exceptional positioning accuracy, and reliable closed-loop motion control.
Available in HT8108-J6 (6:1) and HT8108-J9 (9:1) gear ratios, the actuator allows designers to select either higher speed or higher output torque according to different robotic joint requirements.
Supporting MIT-compatible CAN communication, torque control, velocity control, and position control, the HT8108 integrates easily into modern robotic platforms requiring responsive and precise motion.
Key Features
- Integrated Brushless Servo Motor
- Precision Planetary Gear Reducer
- Integrated CAN Servo Driver
- MIT-Compatible CAN Communication
- High Torque Density Design
- Compact Lightweight Construction
- Closed-Loop Servo Control
- 12-bit High Resolution Encoder
- Low Backlash Planetary Gearbox (<6 arcmin)
- Steel Planetary Gears
- Supports Independent External Encoder
- Designed for Humanoid Robot Joints
- Ideal for Robot Dogs, Robotic Arms & Exoskeletons
Specifications
HT8108-J6
| Parameter | Specification |
|---|---|
| Model | HT8108-J6 |
| Rated Voltage | 36V |
| Voltage Range | 24–48V |
| Rated Power | 170W |
| Rated Torque | 6.5 N·m |
| Stall Torque | 17 N·m |
| Rated Speed | 250 RPM |
| Maximum Speed | 650 RPM |
| Rated Current | 14.5A |
| Stall Current | 45A |
| Gear Ratio | 6:1 |
| Gear Type | Planetary |
| Gear Material | Steel |
| Gear Backlash | <6 arcmin |
| Pole Pairs | 21 |
| Torque Constant | 0.45 N·m/A |
| Speed Constant | 13.8 rpm/V |
| Weight (Motor) | 525 g |
| Weight (Driver Version) | 567 g |
| Size (Motor) | Ø96 × 34 mm |
| Size (Driver Version) | Ø96 × 41.5 mm |
| Max Axial Load | 800 N |
| Max Radial Load | 900 N |
| Protection | IP54 (Motor Only) |
| Communication | CAN |
| Baud Rate | 1 Mbps |
| Encoder Resolution | 12-bit |
| Control Modes | Torque / Speed / Position |
HT8108-J9
| Parameter | Specification |
|---|---|
| Model | HT8108-J9 |
| Rated Voltage | 36V |
| Voltage Range | 24–48V |
| Rated Power | 170W |
| Rated Torque | 9 N·m |
| Stall Torque | 22 N·m |
| Rated Speed | 180 RPM |
| Maximum Speed | 440 RPM |
| Rated Current | 15A |
| Stall Current | 45A |
| Gear Ratio | 9:1 |
| Gear Type | Planetary |
| Gear Material | Steel |
| Gear Backlash | <6 arcmin |
| Pole Pairs | 21 |
| Torque Constant | 0.60 N·m/A |
| Speed Constant | 9.357 rpm/V |
| Weight (Motor) | 525 g |
| Weight (Driver Version) | 567 g |
| Size (Motor) | Ø96 × 34 mm |
| Size (Driver Version) | Ø96 × 41.5 mm |
| Max Axial Load | 800 N |
| Max Radial Load | 900 N |
| Protection | IP54 (Motor Only) |
| Communication | CAN |
| Baud Rate | 1 Mbps |
| Encoder Resolution | 12-bit |
| Control Modes | Torque / Speed / Position |
Applications
- Humanoid Robot Joints
- Quadruped Robot Legs
- Robotic Arms
- Exoskeleton Systems
- Biped Robots
- Industrial Robot Joints
- Autonomous Mobile Robots (AMR)
- AGV Steering Systems
- Rehabilitation Robots
- Research Robotics Platforms
- Precision Motion Systems
- Automation Equipment
Package Includes
- 1 × HT8108 Robot Joint Actuator
- Integrated Planetary Gearbox
- Integrated Magnetic Encoder
- Driver Version (if selected)
FAQ
Does the HT8108 include a servo driver?
The actuator is available in both motor-only and motor with integrated CAN driver configurations.
Which communication protocol is supported?
MIT-compatible CAN communication with a default baud rate of 1 Mbps.
What is the difference between J6 and J9?
- HT8108-J6: Higher speed, lower reduction ratio (6:1).
- HT8108-J9: Higher output torque, lower output speed (9:1).
Can an external encoder be added?
Yes. The actuator supports an independent external encoder.
Is this suitable for humanoid robots?
Yes. The HT8108 Series is specifically designed for robotic joint applications including humanoid robots, quadrupeds, robotic arms, and exoskeleton systems.
