UNITREE A2-W Pro

Unitree A2-W Pro

The Unitree A2-W Pro is a mobile industrial platform designed to operate in highly complex environments. Weighing approximately 37 kg, including batteries, it combines a robust construction with high power reserves and dynamic movement. The robot reaches speeds of up to 5 m/s, carries working loads of approximately 20–25 kg and supports static loads of up to 100 kg. Its efficient wheel drive improves travel efficiency over longer distances.

Mobility in challenging environments

The A2-W Pro is designed for environments where conventional mobile platforms may be unreliable. It can climb continuous steps of at least 28 cm, negotiate a single step of at least 90 cm and travel on slopes of up to 45°. It maintains control and balance on stairs, debris and uneven surfaces. Advanced control algorithms support smooth transitions between manoeuvres and directions, while the wheeled-foot configuration improves speed and smoothness across varied terrain.

Drive system and construction

Mobility is provided by 12 low-inertia, high-speed internal-rotor PMSM motors. The system responds rapidly, including under heavy loads, and delivers maximum torque of approximately 180 N·m for stable operation in dynamic scenarios. Dual joint encoders support precise movement, while industrial cross bearings in the joints improve movement precision and mechanical service life. The structure combines aluminium alloy with damage-resistant plastic.

Transport and payload

The Unitree A2-W Pro can serve as a mobile work base for transporting equipment, tools and measuring instruments in locations that are difficult to access or hazardous for people. It carries a working load of approximately 20–25 kg while moving, and its structure supports a static load of up to 100 kg. Wheel drive improves transport efficiency over longer distances while retaining the ability to negotiate uneven and variable surfaces.

Environmental perception and positioning

The Pro model uses an HD camera and two LiDAR sensors to provide a wide field of view, reduce blind spots and support safer navigation. This configuration enables more accurate spatial mapping and stable operation in dynamic conditions. Built-in work lighting improves visibility after dark and in dim locations such as unlit halls, tunnels and industrial facilities. The system supports stable obstacle avoidance, point-cloud environment visualisation and HD image transmission. GPS and 4G are built in, and the Pro version supports a wireless vector positioning module.

Battery and operating time

The dual-battery system uses two 9000 mAh batteries, with a combined capacity of 18000 mAh (907.2 Wh). Each battery has a capacity of 453.6 Wh. Without a load, the robot operates for approximately 4–5 hours and can cover around 20 km. With a 25 kg load, operating time is approximately 2.5–3 hours, with a range of up to around 12.5 km. Hot-swappable batteries can be replaced without stopping the robot, supporting continuous operation. Charging one battery takes approximately 1 hour. The operating temperature range is –20°C to 55°C.

Computing, connectivity and development

The platform includes an 8-core CPU for system functions and an Intel Core i7 user development platform. The Pro version uses a high-power computing dock, providing a total of three computing units. OTA updates support software development without downtime, and the platform supports high- and low-level development, robot models and simulation interfaces, including Isaac Sim.

• Wireless connectivity: Wi-Fi 6 and Bluetooth 5.2
• External interfaces: 2 × RS485, 2 × CAN, 2 × Gigabit Ethernet, 2 × USB 3.0 Type-C for the 8-core CPU and 2 × USB 3.0 Type-C for the Intel Core i7
• Power outputs: 12 V, 24 V and BAT
• Audio: built-in speaker and microphone for voice communication and real-time messages, including operational status and safety announcements
• Autonomous charging: optional

Applications and environmental resistance

The Unitree A2-W Pro is a flexible platform for complex field tasks, including infrastructure inspections, logistics, patrols and rescue operations. Its mobility, environmental perception and computing capabilities provide a foundation for specialised implementations in demanding operating conditions. The stated protection rating is IP56–IP67, with key components rated IP67.

Specifications

• Chassis configuration: wheeled-foot
• Working payload: approximately 20–25 kg
• Static load capacity: up to 100 kg
• Maximum speed: up to 5 m/s
• Operating time without load: 4–5 hours
• Range without load: approximately 20 km
• Operating time with a 25 kg load: 2.5–3 hours
• Range with a 25 kg load: approximately 12.5 km
• Continuous stair-climbing ability: at least 28 cm
• Maximum single-step height: at least 90 cm
• Maximum terrain incline: 45°
• Battery configuration: two batteries, 9000 mAh (453.6 Wh) each; 18000 mAh (907.2 Wh) combined
• Charging time per battery: approximately 1 hour
• Motors: 12 low-inertia, high-speed internal-rotor PMSM motors
• Joint encoders: dual
• Base platform: 8-core CPU
• User development platform: Intel Core i7
• Pro computing configuration: high-power dock, three computing units in total
• Pro perception: 2 × LiDAR and HD camera
• Wireless vector positioning module: supported on Pro version
• Protection rating: IP56–IP67; key components IP67
• Operating temperature: –20°C to 55°C