Unitree - Go2: Body motor/Calf motor/Thigh motor
- Genuine Replacement Motor – Original replacement joint motor designed specifically for the Unitree Go2 quadruped robot.
- Compatible with Go2 Joint Positions – Available as a Body Motor, Calf Motor, or Thigh Motor to match your robot's repair requirements.
- OEM Fit & Performance – Manufactured to original equipment specifications for seamless compatibility and dependable operation.
- Designed for Repairs & Maintenance – Ideal for replacing damaged or worn joint motors to restore optimal robot performance.
- Precision Motion Control – Built to deliver smooth, accurate joint movement for reliable robotic operation.
- Easy Integration – Designed for direct replacement in compatible Go2 robotic systems with proper installation procedures.
- Durable Construction – Manufactured using high-quality components for long-term reliability in demanding environments.
- Suitable for Professional Applications – Ideal for robotics research, industrial inspection, security patrol, education, and autonomous robotics.
- Maintains Original Performance – Helps restore the robot's mobility, stability, and movement characteristics after maintenance.
- Unitree Go2 Compatible – Specifically engineered for the Unitree Go2 robotic platform. Select the correct motor type before ordering.
- Trusted dealerDirect manufacturer partnership
- Pan-India deliveryInsured shipping, all states
- Post-sale supportTraining + service included
What makes it work
Unitree Go2 Replacement Motor
The Unitree Go2 Replacement Motor is the genuine joint actuator for the Go2, available as a Body, Calf, or Thigh motor — select the correct type before ordering.
BLDC Outrunner Design
~6.2:1 Planetary Gearbox
Quick Field Replacement
Genuine Unitree Part
Full Specifications
| Specification | Details |
|---|---|
| Product | Unitree Go2 Replacement Motor — select Body, Calf, or Thigh when ordering |
| Motor Type | 3-phase BLDC outrunner, 36-slot / 42-pole, Delta winding configuration |
| Gearbox | Planetary reduction, approximately 6.2:1 ratio |
| Peak Joint Torque | Up to 45 N·m (the platform’s largest joint; actual torque varies by specific joint position) |
| Housing | Approximately 96mm diameter × 40mm deep |
| Output Interface | Custom pinion gear plate |
| Connectivity | Quick-connect wiring harness for direct installation |
| xBoom SKU | xboom-144863 |
| Specification | Details |
|---|---|
| Body (Hip) Motor | Controls hip abduction/adduction, with a movement range of approximately -48° to 48° |
| Thigh Motor | Controls the upper leg’s forward/backward swing, with a movement range of approximately -200° to 90° |
| Calf Motor | Controls the lower leg/knee joint, with a movement range of approximately -156° to -48° |
| Selection Note | Each Go2 leg uses one motor of each type. Confirm exactly which joint is damaged before ordering, since the three types aren’t interchangeable |
One Damaged Joint, One Part
Unitree Go2 Replacement Motor: Built Around a Shared Design, Sized for Each Joint
Every leg on the Go2 relies on three of these motors working together — one at the body/hip joint, one at the thigh, and one at the calf. Each is built around the same 36-slot, 42-pole BLDC outrunner design paired with a roughly 6.2:1 planetary gearbox, but each covers a different range of motion for its specific joint. When one motor fails or wears out, Unitree’s modular leg design means it can be replaced on its own, without swapping the whole leg.
That said, the three joint types genuinely aren’t interchangeable. The body, thigh, and calf motors each cover a different movement range built for their specific position, so confirm exactly which joint failed before ordering — sending the wrong type won’t fit correctly.
3 Joint-Specific Types
Body, thigh, and calf motors each built for their own range of motion.
BLDC Outrunner Design
A 36-slot, 42-pole configuration engineered for smooth, precise motion.
Up to 45 N·m Peak Torque
Enough drive force to move the Go2’s leg through demanding conditions.
Quick Field Replacement
Modular quick-connect wiring keeps a single-joint repair fast and simple.
See Every Detail
What’s Actually Inside
A real teardown view of this exact motor design — the outer housing, the internal circuit board handling motor control, and the pinion gear output shaft that drives the joint. This is genuine hardware, not a stock rendering.
Built for Precise, Reliable Joint Motion
The Unitree Go2 Replacement Motor is engineered to restore a damaged joint to full, factory-matched performance.
⚙️
3 Joint-Specific Motor Types
Body, thigh, and calf motors, each built for their own range of motion.
🔧
36-Slot, 42-Pole BLDC Design
A fractional-slot winding design built to reduce cogging and improve smoothness.
📐
~6.2:1 Planetary Gearbox
Converts motor speed into the torque each joint actually needs.
💪
High Peak Torque Output
Up to 45 N·m at the platform’s largest joint for demanding movement.
🔌
Quick-Connect Wiring
A modular harness keeps a single-motor swap fast and straightforward.
✅
Genuine OEM-Matched Fit
Built to restore the Go2’s original mobility and stability precisely.
Built for Teams Recovering a Go2 After Joint Failure
The Unitree Go2 Replacement Motor suits operators repairing a specific damaged or worn joint, rather than replacing a whole leg or robot.
Industrial Inspection Fleets
Get a damaged unit back in service without a long repair turnaround.
Research & Robotics Labs
A genuine, factory-matched motor keeps test platforms consistent after repairs.
Education & Training Programs
Keep shared classroom units running through normal wear and tear.
Field Repairs After Joint Failure
A single-part fix means less diagnosis time and a precise, matched repair.
Extending Fleet Service Life
Repair joint-level wear instead of retiring a whole unit early.
Genuine Spares Stocking
Keep one of each type on hand so a joint failure doesn’t mean downtime.
See Inside the Go2’s Joints
A real teardown and disassembly of the Go2’s leg joints, plus the platform these motors drive.
Frequently Asked Questions
What’s the difference between the Body, Calf, and Thigh motors?
How do I know which Unitree Go2 Replacement Motor to order?
What’s the motor’s technical design?
Can I replace just one motor, or do I need to replace the whole leg?
What’s the peak torque of this motor?
Is pricing listed online?
The full sheet
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