Unitree A2

Unitree A2

Unitree

The Unitree A2 is an industrial-grade quadruped built to carry and to endure: standing payload is about 100 kg and continuous walking payload is 25 kg. On a single charge it walks more than 5 hours unloaded, covering about 20 km, and with 25 kg aboard still manages 3 hours and about 12.5 km, enough for a full inspection shift. Peak joint torque is about 180 N·m and speed ranges from 0 to 3.7 m/s (about 5 m/s at the limit), with slopes and steps handled routinely. IP56 protection means it is unfazed by outdoor dust and rain. An 8-core CPU and an Intel Core i7 development platform are standard, with LiDAR and HD camera fitted, making it capable of plant inspection and campus logistics alike.

Full-body DoF
16 DoF
Weight
~52 kg
Starting price · A2-W PRO
Configurable per industry solution
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Specifications

HardwareA2-W PROConfigurable per industry solution
Sensing
CamerasHD camera x 1
MicrophonesMicrophone array
GPSYes (extended)
Computing
Main processor
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Standard: 8-core high-performance CPU (platform functions) + Intel Core i7 (user development); optional: high-compute expansion dock

Actuation
Full-body degrees of freedom16
Joint motors
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Low-inertia, high-speed inner-rotor permanent magnet synchronous motor (faster response and better thermal performance)

Joint encodersDual encoders
Joint torqueapprox. 180 N.m
Motion
Max speed0-3 m/s (limit approx. 6 m/s)
Max slope angleapprox. 45°
Max step heightapprox. 0.5~1 m
Max stair heightMax. step height 30 cm
Max payloadapprox. 100 kg
Walking payloadApprox. 25 kg (up to approx. 35 kg under ideal conditions)
Static payloadapprox. 100 kg
Power
Battery capacity
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Single battery 9000 mAh (453.6 Wh), dual battery 18000 mAh (907.2 Wh)

Walking runtime
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Unloaded: over 3.5 h of continuous walking, about 35 km; with a 25 kg load: over 1.5 h, about 15 km

ChargingNot listed
Supply voltage50.4 V
Connectivity
WirelessWi-Fi 6, Bluetooth 5.2: yes
Expansion interfaces
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RS485 x 2, CAN x 2, gigabit Ethernet x 2, USB 3.0 Type-C (8-core high-performance CPU) x 2, USB 3.0 Type-C (Intel Core i7) x 2, power output: 12 V; 24 V; BAT

Structure
Body size625 mm
Weightapprox. 52 kg
Dimensions900 mm x 440 mm x 625 mm
Folded dimensions930 mm x 685 mm x 210 mm
Shell materialAluminium alloy + high-strength engineering plastic
CoolingLocalised air cooling
Tire sizeDiameter 190 mm; width 51 mm
Environment
IP ratingIP56-IP67 (core components rated IP67)
Operating temperature-20°C~55°C
Source: AI123Source updated

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