UNITREE A2 Pro

Unitree A2 Pro

The Unitree A2 Pro is an industrial quadruped robot designed for demanding environments. It combines precise environmental perception, a durable construction and high computing power. The robot weighs approximately 31 kg without batteries and 37 kg with batteries. It can reach speeds of up to 5 m/s, carry loads of up to 25 kg while moving and support up to 100 kg when stationary.

Mobility in demanding environments

The A2 Pro is designed to operate where standard mobile systems may be ineffective. It can climb steps up to 30 cm high and slopes of up to 45°, enabling movement on stairs, rubble, embankments and uneven rock formations. Advanced control algorithms support stable, smooth movement, including during sudden manoeuvres. The listed climbing ability is 0.5–1 m.

Drive and construction

Twelve low-inertia PMSM motors provide responsive drive and precise motion control. Industrial cross-roller bearings in the joints support durability and accuracy under prolonged loads. Maximum joint torque is approximately 180 N·m. The body is made from aluminium alloy and engineering plastics to protect key components.

Load handling

The A2 Pro can carry loads of up to 25 kg while moving and support up to 100 kg in a stationary position. It can transport tools, measuring equipment and rescue equipment to hard-to-reach locations.

Perception and positioning

The Pro configuration combines an HD camera with two LiDAR sensors to improve environmental perception and reduce blind spots. Built-in front lighting supports operation in low-visibility conditions, including night inspections and work inside industrial facilities. The system can present the environment as a point cloud and supports SLAM positioning and mapping, autonomous navigation and obstacle avoidance. GPS and a 4G communication module are built in, and a wireless vector positioning module is included as a companion module.

Power and operating time

The robot uses two hot-swappable batteries, each with a capacity of 9000 mAh, for a total capacity of 18,000 mAh. Without a load, operating time is approximately 5 hours, with a range of up to 20 km. With a 25 kg load, operating time is approximately 3 hours and range is up to 12.5 km. The hot-swap design allows battery replacement without interrupting operation. The stated operating temperature range is −20°C to 55°C.

Computing and control

The standard configuration includes an 8-core CPU for system functions and an Intel Core i7 user computer. An external high-performance computing dock is also specified, with three computing units in total. An optional higher-performance computing module is available for more demanding projects. The robot supports OTA software updates and offers SDK/API integration and Isaac Sim support.

Communication and voice

Interfaces include RS485, CAN, Ethernet and USB-C, with power outputs of 12 V, 24 V and BAT. Wireless connectivity includes Wi-Fi 6, Bluetooth 5.2, GPS and 4G. A microphone and speaker enable two-way voice communication for real-time warnings and information messages, supporting safety and coordination in industrial environments. HD image transmission is supported.

Applications

The A2 Pro is a mobile platform for infrastructure inspections, field logistics, industrial patrols, research and development projects, and rescue operations. Its perception systems, computing capability and open architecture provide a base for specialised, scalable solutions. Autonomous charging is available as an option.

Technical specifications

Dimensions and construction

• Dimensions in standing position: 820 × 440 × 570 mm
• Dimensions folded or lying down: 720 × 550 × 220 mm
• Construction: aluminium and engineering plastics
• Weight: approximately 31 kg without batteries; approximately 37 kg with batteries
• Degrees of freedom: 12 DoF

Drive, mobility and load

• Drive: high-performance, low-inertia PMSM motors
• Maximum joint torque: approximately 180 N·m
• Maximum speed: up to 5 m/s
• Maximum step or curb height: up to 30 cm
• Climbing ability: 0.5–1 m
• Maximum terrain slope: up to 45°
• Working load: up to 25 kg
• Static load: up to 100 kg

Power and autonomy

• Power system: dual hot-swappable battery system
• Capacity per battery: 9000 mAh
• Total battery capacity: 18,000 mAh
• Operating time without load: approximately 5 hours
• Range without load: approximately 20 km
• Operating time with a 25 kg load: approximately 3 hours
• Range with a 25 kg load: approximately 12.5 km

Perception and positioning (Pro)

• Laser scanners: two LiDAR sensors
• Positioning module: wireless vector positioning module (companion)
• GPS: built in
• 4G communication module: built in
• Camera: HD
• Work lighting: built in
• Environment presentation: point-cloud view

Computing and autonomous functions

• Base platform: 8-core CPU
• User computer: Intel Core i7
• External computing dock: high-performance computing dock
• Total built-in computing power: 3 units
• SLAM positioning and mapping: supported
• Autonomous navigation: supported
• Obstacle avoidance: supported
• Image transmission: HD
• Autonomous charging: optional

Connectivity and operating environment

• Wireless connectivity: Wi-Fi 6, Bluetooth 5.2, GPS and 4G
• Interfaces: RS485, CAN, Ethernet and USB-C
• Power outputs: 12 V / 24 V / BAT
• System integration: SDK/API and Isaac Sim support
• Protection rating: IP56–IP67
• Protection rating of key components: IP67
• Operating temperature: −20°C to 55°C