UNITREE A2

Industrial quadruped robot

Unitree A2 is an industrial-grade quadruped robot designed for demanding environments where conventional solutions may be unsuitable. Weighing approximately 37 kg with batteries, it combines a robust mechanical design with dynamic movement and long operating time. It reaches speeds of up to 5 m/s, carries loads of up to 25 kg while walking and supports a static load of up to 100 kg. The A2 is designed as a professional platform for intensive field use.

Mobility in challenging terrain

The A2 is built to operate in complex and unpredictable environments. It can climb steps up to 30 cm high and traverse slopes of up to 45°, supporting operation on stairs, rubble, rocks and steep terrain. Advanced stabilisation and precise motion control help maintain balance during sudden changes in direction or speed. These capabilities suit infrastructure inspections, field operations and work in hard-to-reach locations.

Drive system and construction

The robot uses 12 PMSM motors with low-inertia internal rotors for high power and responsive movement under load. Industrial cross-roller bearings in the joints support precise movement and stable long-term operation. Maximum joint torque is approximately 180 N·m, helping the robot move smoothly with heavy loads while maintaining control. The structure combines aluminium alloy and engineering plastics.

Transport capability

Designed for demanding logistics tasks, Unitree A2 carries loads of up to approximately 25 kg while walking and supports a static lifting load of approximately 100 kg. It can transport tools, measuring equipment and other supplies in locations where conventional transport methods are difficult, hazardous or impractical. This makes it suitable as a mobile transport platform in industrial facilities, on construction sites and in other work environments.

Perception and spatial awareness

The standard sensor system includes industrial LiDAR, a front-facing HD camera and front lighting. It supports environmental analysis, obstacle detection and terrain assessment for motion planning. The lighting improves visibility in low-light conditions, supporting patrols, inspections and other operations where visibility is limited. An optional perception configuration provides front-to-rear coverage with front and rear LiDAR.

Dual-battery power system

Unitree A2 uses two 9000 mAh batteries for a combined capacity of 18,000 mAh. With no load, it can operate while moving for up to approximately 5 hours and cover up to approximately 20 km. With a 25 kg load, operating time is approximately 3 hours, with a range of up to approximately 12.5 km. The hot-swap design allows batteries to be replaced without interrupting operation. The power system is specified for operation in temperatures from −20°C to 55°C.

Computing, connectivity and expansion

The A2 is equipped with an 8-core processor and supports an optional Intel Core i7 module for motion algorithms, environmental analysis and data processing. It supports remote OTA updates and provides interfaces for integration with additional systems. SDK/API support and the ability to install additional sensors and accessories allow the platform to be adapted to specific applications.

• Interfaces: 2 × RS485, 2 × CAN, 2 × Gigabit Ethernet and 4 × USB-C
• Power outputs: 12 V, 24 V and battery power
• Wireless connectivity: Wi-Fi 6 and Bluetooth 5.2
• Optional connectivity: GPS and 4G

Voice communication

A microphone and speaker support voice communication and real-time messaging. This can help signal the robot’s presence and communicate operational information to people nearby.

Applications

With its mobility, mechanical durability and perception systems, Unitree A2 is suited to inspections, field patrols, rescue operations and other tasks in locations that are difficult to access or hazardous for people. Its open architecture and range of interfaces provide options for expansion and adaptation to specific operational requirements.

Technical specifications

Dimensions and construction

• Dimensions when standing: 820 × 440 × 570 mm
• Dimensions when 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

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

Power and operating time

• Power system: dual batteries with hot-swap capability
• 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 connectivity

• Standard perception system: LiDAR, HD camera and front lighting
• Optional perception system: front-to-rear perception with front and rear LiDAR
• Connectivity: Wi-Fi 6, Bluetooth 5.2; optional GPS and 4G
• Interfaces: 2 × RS485, 2 × CAN, 2 × Ethernet, 4 × USB-C; 12 V, 24 V and battery power
• On-board computing: 8-core processor; optional Intel Core i7 module
• Integration and expansion: SDK/API support and provision for additional sensors and accessories

Operating environment

• Protection rating: IP56
• Operating temperature: −20°C to 55°C