Unitree W4010-25 wrist motor
Small G1 wrist motor for the extra wrist pitch and yaw joints on the 29-joint EDU; 25:1 gearing.
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 wrist motor itself and does not sell it, so this is not its price. It is the price of comparable small joint actuators a builder can buy that give about 4 to 7 Nm of peak torque with built-in planetary gearing, like the G1's 5 Nm wrist units. Most cost US$120 to US$160; the top of the range is a model with a very similar 28:1 ratio.
Our own figure, not a price from any company.
Based on: CubeMars, AK45-10 V3.0 KV75 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
