Unitree A2 – Industrial-Grade Quadruped Robot Dog
The Unitree A2 sets a new standard for industrial and research-grade quadruped robotics. Designed for rugged environments, autonomous inspection, logistics, and field research, it combines raw mechanical power, intelligent control, and open developer access — making it one of the most capable quadruped platforms available today.
Overview
Built from high-strength aluminum alloy and engineering plastics, the A2 is engineered for durability, flexibility, and precision. Weighing about 31 kg (no batteries) or 37 kg (with dual hot-swappable batteries), it achieves an optimal balance between payload capacity, runtime, and agility.
Why It’s a Game-Changer
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Superior Load & Endurance:
Carries up to 25 kg while walking and supports 100 kg when stationary. Achieves up to 20 km (~5 hours) range unloaded or 12–13 km (~3 hours) when fully loaded.
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Unmatched Agility:
Reaches speeds of up to 5 m/s (11 mph), climbs 45° slopes, steps over 30 cm obstacles, and clears 1 m heights with ease.
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360° Perception:
Equipped with front and rear 3D LiDAR, an HD camera with illumination, and AI-enhanced vision for terrain awareness and real-time navigation.
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Rugged & Weather-Ready:
IP56 chassis with IP67-sealed critical components ensures performance in −20 °C to +55 °C, rain, or dust.
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High-Power Actuation:
Twelve PMSM motors deliver up to 180 N·m torque, enabling high-speed, stable motion, jumps, and self-balancing maneuvers.
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Developer-Ready Platform:
Includes 8-core CPU, optional Intel i7 compute dock, full ROS / ROS 2 SDK, OTA updates, and multiple I/O ports — giving researchers and engineers total development freedom.
Perfect For
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Industrial and autonomous inspection & security patrols
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Logistics and payload transport in harsh environments
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Disaster response, emergency reconnaissance, and rescue missions
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Robotics research, AI development, and academic experimentation
Specifications
| Category |
Parameter |
A2 (Standard) |
A2-PRO |
| Mechanical |
Size (Standing) |
820 × 440 × 570 mm |
820 × 440 × 570 mm |
|
Size (Lying) |
720 × 550 × 220 mm |
720 × 550 × 220 mm |
|
Material |
Aluminum alloy + engineering plastic |
Same |
|
Weight (No Battery) |
≈ 31 kg |
≈ 31 kg |
|
Weight (With Battery) |
≈ 37 kg |
≈ 37 kg |
|
DoF (Motors) |
12 |
12 |
|
Joint Bearings |
Industrial crossed-roller |
Same |
|
Joint Motors |
Low-inertia, high-speed PMSM |
Same |
|
Max Joint Torque |
≈ 180 N·m |
≈ 180 N·m |
|
Motion Range |
Body −58° ~ 58°; Thigh −134° ~ 180° |
Same |
| Electrical |
Supply Voltage |
50.4 V |
50.4 V |
|
Encoders |
Dual encoders |
Dual encoders |
|
Cooling |
Local air cooling |
Local air cooling |
|
Power Slots |
Dual hot-swappable batteries |
Dual hot-swappable batteries |
|
Battery Capacity |
9 Ah × 2 (907 Wh total) |
Same |
| Connectivity / I/O |
Wireless |
Wi-Fi 6, Bluetooth 5.2 |
Same |
|
Audio |
Speaker + microphone array |
Same |
|
Lights |
Front headlight |
Front headlight |
|
Optional Modules |
Vector-follow, GPS, 4G |
Same |
|
Interfaces |
RS-485 × 2, CAN × 2, GbE × 2, USB-C × 2 (CPU) + 2 (CPU i7), Power 12V / 24V / BAT |
Same |
| Sensing |
Sensors |
1 × LiDAR + 1 × HD camera |
2 × LiDAR + 1 × HD camera |
| Compute |
Onboard Compute |
8-core CPU + optional Intel i7 module |
Same (High-compute dock optional) |
| Performance |
Operating Temp |
−20 °C ~ 55 °C |
−20 °C ~ 55 °C |
|
Endurance / Range |
> 5 h (~20 km) no-load |
> 5 h (~20 km) no-load |
|
|
> 3 h (~12.5 km) with 25 kg load |
> 3 h (~12.5 km) with 25 kg load |
|
Max Standing Load |
≈ 100 kg |
≈ 100 kg |
|
Continuous Walking Load |
≈ 25 kg |
≈ 25 kg |
|
Max Slope |
≈ 45° |
≈ 45° |
|
Stairs / Obstacle |
30 cm step / 0.5–1 m climb |
30 cm / 0.5–1 m |
|
Speed |
0 – 3.7 m/s (peak ~5 m/s) |
Same |
|
Wheel-Leg Kit |
Optional |
Optional |
| Protection & Support |
Ingress Rating |
IP56 |
IP56 (chassis) / IP67 (core components) |
|
Updates & SDK |
Smart OTA / ROS & ROS 2 development |
Same |
