Name: Unitree A2
Brand: Unitree

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Unitree A2 price, specs and parts: chip, AI model, sensors | Teardex

Brain layer 3 of 5

Senses

How the robot sees and hears the world.

Not disclosedA2 and A2-PROThe A2 carries one industrial lidar, a laser scanner that measures distances to map its surroundings, and the A2-PRO adds a second one so it sees front and rear. Unitree does not name the lidar model or its company.

The A2 carries one industrial lidar, a laser scanner that measures distances to map its surroundings, and the A2-PRO adds a second one so it sees front and rear. Unitree does not name the lidar model or its company.

We looked at
Checked: 9 Nov 2026

3D lidarLikely

A laser scanner that measures distance in every direction. The lidar is described as an ultra-wide 3D lidar that gives 360-degree depth awareness.

Why not confirmed. Unitree's own pages say only industrial lidar; the 3D and 360-degree details come from press coverage.

Made by: Not named
Applies to: All versions
Sources
Checked: 9 Nov 2026

Every robot using 3D lidar

Single cameraConfirmed

One camera, like one eye. It sees well but cannot easily judge distance. One HD camera with a front light watches the ground ahead. Unitree's robot model file puts the camera at the front of the body.

Made by: Not named
Applies to: All versions
Sources
Checked: 9 Nov 2026

Every robot using Single camera

Microphone arrayConfirmed

Several microphones working together, so the robot can hear speech and tell where it comes from. The A2 has a microphone array and a speaker, and Unitree's programming kit includes an audio client for it.

Made by: Not named
Applies to: All versions
Sources
Checked: 9 Nov 2026

Every robot using Microphone array

GNSS satellite positioningA2-PROConfirmed

A receiver that uses GPS and other satellite systems to find where the robot is outdoors. Satellite positioning is optional on the A2 and standard on the A2-PRO, along with 4G and a module that lets the robot follow a person wirelessly.

Made by: Not named
Applies to: A2-PRO
Sources
Checked: 9 Nov 2026

Every robot using GNSS satellite positioning

IMU motion sensorConfirmed

A sensor, like the one in a phone, that feels tilt and movement so the robot can keep its balance. Unitree's simulator model of the A2 includes an IMU, a motion sensor that tracks tilt and acceleration, at the centre of the body. Unitree does not name the part.

Made by: Not named
Applies to: All versions
Sources
Checked: 9 Nov 2026

Every robot using IMU motion sensor

Not the brain

Body

The motors, gears, hands and battery that make it move.

Unitree joint motorsIn-houseOur estimateConfirmed

Unitree's own brushless joint motors, each with two position sensors and a hollow shaft so wires run through the joint. Twelve joints, three per leg, are driven by Unitree's low-inertia, high-speed inner-rotor permanent magnet motors, each with two encoders that report its position. Peak joint torque is about 180 N.m.

Part priceOur estimateUS$120 to US$900 each

Based on: Unitree makes these joint motors itself and does not sell them, so this is not their price. It is the price range of comparable joint actuators a builder can buy, from about US$120 for a 5 Nm wrist-size unit to about US$900 for a 120 Nm leg-size unit. A G1, for example, uses 23 to 43 of these, so buying comparables for one robot would cost several thousand dollars, far more than Unitree likely pays to make its own.

Price checked 20 Oct 2026

Made by: In-house
Applies to: All versions
Sources
Checked: 9 Nov 2026

Every robot using Unitree joint motors

Unitree joint motorsModel fileIn-houseOur estimateConfirmed

Unitree's own brushless joint motors, each with two position sensors and a hollow shaft so wires run through the joint. Unitree's robot model file caps the hip and thigh joints at 120 N.m and the knee joints at 180 N.m.

Part priceOur estimate

Crossed roller bearingsOur estimateConfirmed

Joint output bearings with rollers set at right angles, so one bearing carries loads from every direction. The joints use industrial-grade crossed roller bearings, which take loads from several directions at once.

Part priceOur estimateUS$130 to US$200

Based on: Robot companies do not sell the crossed roller bearings in their joints, and the one found in a G1 is a Luoyang Baina part with no public price, so this is not its price. It is the price of comparable branded crossed roller bearings a builder can buy one at a time, with a bore of 35 to 40 mm like the Baina CRBT355A. A crossed roller bearing has small rollers set at right angles to each other so one thin ring can carry loads from every direction; Chinese companies selling in bulk to robot companies likely charge much less.

Planetary gear reducerIn-houseOur estimateLikely

A compact gearbox where small gears circle a central gear, trading motor speed for more turning force. Unitree's prospectus says its joint modules pair its own motors with planetary gearboxes it designs and makes, with teeth shaped for the impacts of legged walking.

Part priceOur estimate

A2 battery, 9000mAh 453.6WhIn-houseConfirmed

Unitree's hot-swappable 50.4 V pack for the A2 robot dog, which runs two side by side. Two hot-swappable batteries, which can be changed without shutting down, each hold 9,000 mAh or 453.6 Wh on a 50.4 V supply. Unitree claims over 5 hours or about 20 km of walking unloaded, and over 3 hours or about 12.5 km carrying 25 kg.

Made by: In-house
Applies to: All versions
Sources
Checked: 9 Nov 2026

Every robot using A2 battery, 9000mAh 453.6Wh

Aluminium alloy frameConfirmed

The robot's skeleton made of light aluminium alloy, often mixed with engineering plastic. The body is aluminium alloy and high-strength engineering plastic and weighs about 42 kg with batteries. It carries about 25 kg while walking and holds about 100 kg standing.

Made by: Not named
Applies to: All versions
Sources
Checked: 9 Nov 2026

Every robot using Aluminium alloy frame

Unitree A2

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