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Unitree A2-W quadruped robot with wheels
Unitree Robotics | A-000000-08016
From €31,000.00
incl. tax
The Unitree A2-W is a quadruped robot with wheels designed to move across uneven terrain, carry payloads, and integrate sensors for inspection, logistics, or research, indoors and outdoors.
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A wheeled quadruped combining obstacle negotiation and efficient mobility on rolling surfaces
The Unitree A2-W builds on the mechanical base of the A2 and adapts it to a mobility-oriented wheel-leg configuration. The goal is to provide a platform that can switch efficiently between progress on difficult terrain (steps, slopes, obstacles) and faster, more efficient travel on rolling surfaces.
Locomotion relies on 12 joint motors and an architecture designed for intensive use: dual encoders per joint and industrial crossed roller bearings for precision and load handling. The robot can support up to 100 kg as a standing load and around 20–25 kg during continuous walking, with a slope capability up to 45°.
For perception and navigation, the A2-W integrates 1 LiDAR and an HD camera. Interfaces and connectivity (Wi-Fi 6, Bluetooth 5.2, Ethernet, USB 3.0 Type-C, CAN/RS485) make it easier to integrate sensors, external modules, and control systems. OTA updates and support for secondary development help adapt the platform to specific scenarios.
Two variants are available: A2-W Standard and A2-W Pro. The A2-W Pro notably adds a second LiDAR, optional GPS/4G, SLAM capabilities (mapping and autonomous navigation), and enhanced environmental protection (up to IP56–IP67).
The dual-battery power system (hot-swappable) is intended for extended operation: up to about 5 hours and 20 km without load, and about 3 hours / 12.5 km with a 25 kg payload.
Use cases: mobile inspection, equipment transport, and data collection in mixed environments
The Unitree A2-W is intended for teams that need a stable mobile base for sensors and payloads, with a rolling mode useful on large sites and an obstacle negotiation mode for difficult areas.
- Industrial inspection: patrols, equipment monitoring, movement between areas (workshops, corridors, ramps) and step negotiation.
- Outdoor inspection: movement on rough terrain, slopes, obstacles, with visual and 3D acquisition via LiDAR + HD camera.
- Logistics and payload transport: moving equipment (up to 20–25 kg during continuous walking), support for on-site operations.
- Data collection: point cloud recording, HD video, repeatable routes over long distances.
- R&D and prototyping: a platform for locomotion testing (wheels/legs), perception, control, and integration via CAN/RS485/Ethernet.
- Module integration: adding GPS, 4G, or wireless vector follow (options) depending on field needs.
Technical specifications of the Unitree A2-W and A2-W Pro quadruped robots
| Feature | Unitree A2-W | Unitree A2-W Pro |
|---|---|---|
| Dimensions in standing position | 900 × 440 × 625 mm | 900 × 440 × 625 mm |
| Dimensions in lying position | 930 × 685 × 210 mm | 930 × 685 × 210 mm |
| Wheel dimensions | Diameter: 190 mm; width: 51 mm | Diameter: 190 mm; width: 51 mm |
| Materials | Aluminium alloy + high-strength engineering plastic | Aluminium alloy + high-strength engineering plastic |
| Weight without battery | Approx. 45 kg | Approx. 45 kg |
| Weight with battery | Approx. 52 kg | Approx. 52 kg |
| Degrees of freedom | 16 | 16 |
| Joint motors | Low-inertia, high-speed internal-rotor PMSM motors | Low-inertia, high-speed internal-rotor PMSM motors |
| Maximum joint torque | Approx. 180 N·m | Approx. 180 N·m |
| Power supply voltage | 50.4 V | 50.4 V |
| Battery system | Dual battery compartment, dual battery | Dual battery compartment, dual battery |
| Battery capacity | 1 battery: 9000 mAh / 453.6 Wh 2 batteries: 18000 mAh / 907.2 Wh | 1 battery: 9000 mAh / 453.6 Wh 2 batteries: 18000 mAh / 907.2 Wh |
| Connectivity | Wi-Fi 6, Bluetooth 5.2 | Wi-Fi 6, Bluetooth 5.2 |
| Speaker | Yes | Yes |
| Microphone | Microphone array | Microphone array |
| Front lighting | Yes | Yes |
| Wireless vector tracking module | Optional | Yes, extended version |
| GPS | Optional | Yes, extended version |
| 4G | Optional | Yes, extended version |
| Sensors | LiDAR ×1 + HD camera ×1 | LiDAR ×2 + HD camera ×1 |
| On-board computing | High-performance 8-core CPU + Intel Core i7 for user development | High-performance 8-core CPU + Intel Core i7 for user development |
| Computing extension | Optional high-power computing dock | Optional high-power computing dock |
| External interfaces | RS485 ×2, CAN ×2, Gigabit Ethernet ×2, USB 3.0 Type-C ×4, 12 V / 24 V / BAT power outputs | RS485 ×2, CAN ×2, Gigabit Ethernet ×2, USB 3.0 Type-C ×4, 12 V / 24 V / BAT power outputs |
| Operating temperature | -20 °C to 55 °C | -20 °C to 55 °C |
| Battery life without load | More than 3.5 h in continuous walking, approx. 35 km | More than 3.5 h in continuous walking, approx. 35 km |
| Battery life with 25 kg load | More than 1.5 h in continuous walking, approx. 15 km | More than 1.5 h in continuous walking, approx. 15 km |
| Maximum static load | Approx. 100 kg | Approx. 100 kg |
| Payload in continuous walking | Approx. 25 kg, up to approx. 35 kg under ideal conditions | Approx. 25 kg, up to approx. 35 kg under ideal conditions |
| Slope capability | Approx. 45° | Approx. 45° |
| Step-climbing ability | Up to 30 cm | Up to 30 cm |
| Maximum obstacle-crossing height | Approx. 0.5 to 1 m | Approx. 0.5 to 1 m |
| Speed | 0 to 3 m/s, up to approx. 6 m/s | 0 to 3 m/s, up to approx. 6 m/s |
| Protection rating | IP56 | IP56 to IP67, main components certified IP67 |
| OTA updates | Continuous updates | Continuous updates |
| Secondary development | Supported | Supported |
Performance may vary depending on the configuration, payload, terrain and operating conditions.
Unitree A2-W robotic dog resources
The Unitree A2-W is a quadruped robot with wheels designed to move across uneven terrain, carry payloads, and integrate sensors for inspection, logistics, or research, indoors and outdoors.
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