Unitree N7520-22.5 joint motor
Unitree's biggest G1 joint motor, used in the hip-roll and knee joints; the 22.5 is its gear ratio.
In-houseMade by the robot's own company for its robots. Not sold to anyone else.
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Why this price
Unitree makes this joint motor itself and does not sell it, so this is not its price. It is the price of comparable robot joint actuators a builder can buy today that also pack a brushless motor, planetary gearing and encoders into one unit and reach about 120 Nm of peak torque, like the G1's hip roll and knee motors. A robot maker building its own motors in volume would likely pay much less per joint.
Our own figure, not a price from any company.
Based on: CubeMars, AK80-64 KV80 Robotic Actuator (cubemars.com)
How to get it
In-houseIt cannot be bought on its own. To get one, you would buy a robot that has it, from the list below. Comparable parts you can buy, with their prices, are listed further down.
- Unitree Robotics STAR Market IPO prospectus, hearing draft, May 2026dataclouds.cninfo.com.cn
Comparable parts you can buyNot the confirmed part
4 products, scroll sideways
Products on public sale that do the same job, with why each is similar and where to buy it. None is confirmed to be the part inside these robots.
A fuller write-up of this part, with its numbers, price and trade-offs, has not been written yet. How we verify
