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Unitree A2

Unitree A2

Unitree A2 is an Industrial-Grade Legged Robot, Heavy Payload Standard

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Key Features

Agile & Swift Lightweight Extended Endurance
Weighs around 42kg, fully loaded can continuously walk 3h / 12.5km
Unloaded can continuously walk 5h / 20km.
Lighter, Faster, Tougher

Industrial-Grade Legged Robot Heavy Payload Standard
Premium mobile hardware platform, open for rapid development

Dual-Sided Perception
Zero Blind Spots Greater Accuracy

2 industrial LiDARs (front & rear) , HD camera + front light to detect the environment ahead

Dual Battery System
Hot-swappable dual batteries, unlimited runtime: Seamless battery swap, uninterrupted mission. Dual-battery parallel design: swap witout stopping, the external heart for extreme missions. Reliable triple power system guarantees from -20°C to 55°C

High Power,Smart Control, Multi-Scenario Ready
From logistics, industrial inspection, to emergency rescue — effortlessly navigating extreme and complex environments with confidence

Peak Joint Torque
Approx. 180N.m

Extreme Walking Ability
Max step height 30cm
Max slope angle 45°

Load Capacity
Continuous Walking Load 25kg
Standing Load 100kg

Material
Aluminum Alloy + High-strength Engineering Plastic

Max Running Speed
5m/s

Computing Module
Standard: 8-Core High-Performance CPU(Platform Functions) + Intel Core i7(User Devlopment)
Optional: High Computing Power Expansion Dock

Unitree A2

Parameter Unitree A2 Unitree A2-PRO
Price
Contact Sales Contact Sales
Size (Standing)
820 mm × 440 mm × 570 mm 820 mm × 440 mm × 570 mm
Size (Lying Prone)
720 mm × 550 mm × 220 mm 720 mm × 550 mm × 220 mm
Material
Aluminum Alloy + High-Strength Engineering Plastic Aluminum Alloy + High-Strength Engineering Plastic
Weight (without battery)
About 35 kg About 35 kg
Weight (with battery)
About 42 kg About 42 kg
Degrees of Freedom (Joint Motors)
12 12
Joint Bearings
Industrial-grade crossed roller bearings (high precision, high load capacity) Industrial-grade crossed roller bearings (high precision, high load capacity)
Joint Motors
Low-inertia, high-speed inner rotor PMSM (enhanced response & heat dissipation) Low-inertia, high-speed inner rotor PMSM (enhanced response & heat dissipation)
Max Joint Torque
About 180 N·m About 180 N·m
Body Range of Motion
-58°~58° -58°~58°
Thigh Range of Motion
-134°~180° / -89°~225° -134°~180° / -89°~225°
Shank Range of Motion
-158°~-30° -158°~-30°
Supply Voltage
50.4 V 50.4 V
Joint Encoder
Dual encoders Dual encoders
Cooling System
Local air cooling Local air cooling
Power Supply
Dual slots, dual batteries Dual slots, dual batteries
Single Battery Capacity
9000 mAh (453.6 Wh) 9000 mAh (453.6 Wh)
Dual Batteries Capacity
18000 mAh (907.2 Wh) 18000 mAh (907.2 Wh)
Wi-Fi 6, Bluetooth 5.2
YES YES
Speaker
YES YES
Microphone
Microphone array Microphone array
Front Light
YES YES
Wireless vector follow module
/ Optional Expand (Optional)
GPS
/ Optional Expand (Optional)
4G
/ Optional Expand (Optional)
Sensor
LiDAR × 1 + HD Camera × 1 LiDAR × 1 + HD Camera × 1
Control & Compute (Standard)
8-Core high-performance CPU (platform) + Intel Core i7 (user development) 8-Core high-performance CPU (platform) + Intel Core i7 (user development) Optional: high computing power expansion dock
External Interfaces
RS485 × 2, CAN × 2, Gigabit Ethernet × 2, USB3.0-TypeC (8-Core CPU) × 2, USB3.0-TypeC (Intel Core i7) × 2, Power Output: 12V / 24V / BAT RS485 × 2, CAN × 2, Gigabit Ethernet × 2, USB3.0-TypeC (8-Core CPU) × 2, USB3.0-TypeC (Intel Core i7) × 2, Power Output: 12V / 24V / BAT
Operating Temperature
-20°C ~ 55°C -20°C ~ 55°C
Battery Life (No Load)
>5 hours continuous walking, approx. 20 km >5 hours continuous walking, approx. 20 km
Battery Life (With 25kg Load)
With 25 kg load: >3 hours continuous walking, approx. 12.5 km With 25 kg load: >3 hours continuous walking, approx. 12.5 km
Max Standing Load
About 100 kg About 100 kg
Continuous Walking Load
About 25 kg About 25 kg
Slope Walking Capability
About 45° About 45°
Stair Climbing Capability (Max Step Height)
30 cm 30 cm
Max Climb Height
About 0.5 ~ 1 m About 0.5 ~ 1 m
Speed
0~3.7 m/s (up to ~5 m/s) 0~3.7 m/s (up to ~5 m/s)
Replace Wheel-leg
Optional Optional
Ingress Protection Rating
IP56 IP56-IP67 (Core Components Rated IP67)
Smart OTA Upgrade
Continuous Upgrades Continuous Upgrades
Secondary Development
Supported Supported
Warranty
12 months 12 months