The Unitree B2 is an industrial-grade quadruped robot built for long-range inspections, autonomous patrols, emergency response, and heavy payload operations. It weighs approximately 60 kg, runs at over 6 m/s (the fastest industrial quadruped robot available), carries more than 40 kg while walking, and operates for 4–6 hours on a single battery charge. At roughly $100,000 for the base model, the B2 targets power utilities, petrochemical plants, mining operations, and smart factories that need a rugged, autonomous four-legged platform with IP67 dust and water protection.
Price Range
The B2 is available in legged-only and wheeled+legged (B2-W) configurations. Pricing varies substantially by sensor package, LiDAR configuration, and compute options.
| Model | Price (Low) | Price (Average) | Price (High) |
|---|---|---|---|
| B2 (standard, legged) | $100,000 | $110,000 | $130,000 |
| B2 (C32) with 32-channel LiDAR | $120,000 | $140,000 | $160,000 |
| B2-W (wheeled + legged) | $88,900 | $100,000 | $180,000 |
Based on publicly listed prices from Unitree's official store ($100,000 base MSRP), Top3DShop, Roboworks, RoboStore, and eVolt as of April 2026. Standard lead time is approximately 60 days after payment. Customs duties and shipping are additional.
Full Specifications
Chassis and Build
| Spec | Value |
|---|---|
| Dimensions (standing) | 1,098 × 450 × 645 mm |
| Dimensions (lying) | 880 × 460 × 330 mm |
| Weight (with battery) | ~60 kg (132 lbs) |
| IP rating | IP67 (dust-tight, short-term immersion) |
| Operating temperature | -20°C to 55°C (-4°F to 131°F) |
| Frame material | Industrial-grade aluminum alloy |
Performance
| Spec | Value |
|---|---|
| Top running speed | >6 m/s (13.4 mph / 21.6 km/h) |
| Long jump distance | >1.6 m |
| Max payload (standing) | 120 kg |
| Max payload (walking) | >40 kg |
| Max step height | 20–25 cm (continuous stair climbing) |
| Max stair height (forward) | 40 cm |
| Max climbing angle | >45° |
| Joint torque | 360 N·m (170% increase over previous generation) |
| Terrain handling | Slippery surfaces, uneven ground, gravel, mud, stairs, 40 cm obstacle clearance |
Battery and Endurance
| Spec | Value |
|---|---|
| Battery capacity | 45 Ah / 2,250 Wh |
| Battery type | Quick-change, supports autonomous charging (optional) |
| Endurance (no load) | >5 hours / >20 km range |
| Endurance (20 kg load) | >4 hours / >15 km range |
| Endurance improvement vs B1 | 200% increase in endurance, 100% increase in sustained load walking |
Sensors and Perception
| Feature | Standard B2 | B2 (C32) |
|---|---|---|
| 3D LiDAR | 1× (model varies by bundle) | 32-channel LiDAR |
| Depth cameras | 2× | 2× |
| Optical cameras | 2× | 2× |
| 3D mapping | Yes — real-time digital twin generation | Yes — enhanced resolution |
Computing
| Feature | Value |
|---|---|
| Platform CPU | Intel Core i5 |
| User development CPU | Intel Core i7 |
| Optional AI compute | Up to 3× NVIDIA Jetson Orin NX modules |
| Connectivity | 4× Gigabit Ethernet, 4× USB 3.0, 12V/24V auxiliary power output, battery output |
| SDK | Unitree B2 SDK with kinematics, coordinate frames, and control APIs |
B2-W (Wheeled + Legged Variant)
The B2-W adds four 12-inch pneumatic tires (225 mm diameter, 50 N·m wheel torque) that allow the robot to switch between legged and wheeled locomotion. In wheeled mode, it reaches up to 20 km/h and can travel 50 km with a 40 kg load. The B2-W starts at roughly $88,900 (Top3DShop pricing) and offers dramatically greater range on flat surfaces while retaining the B2's ability to climb stairs and traverse rough terrain on legs.
What Is the B2 Actually Used For?
Unlike Unitree's consumer robots (Go2, R1), the B2 is a working industrial tool. Here's where it is deployed today.
Power Grid and Utility Inspection
State Grid, China Southern Power Grid, and similar utilities use the B2 for autonomous substation patrols. The robot carries thermal cameras and multi-gas analyzers, walking set routes on a schedule and flagging anomalies in equipment temperature, gas levels, or switch positions. The IP67 rating means it operates in rain, dust, and temperature extremes that would shut down consumer robots.
Petrochemical Plant Monitoring
The B2 monitors pipelines, liquid levels, and emissions in environments too hazardous for regular human patrols. Its 40 kg payload capacity allows it to carry the full sensor suite needed for comprehensive environmental monitoring.
Mining and Infrastructure
Underground facilities, railway tracks, construction sites, and slopes are within the B2's operational envelope. Its 45° climbing angle and 40 cm step clearance handle industrial stairs and rough terrain.
Emergency Response
Unitree offers a B2 Fire Solution configuration with equipment for high-heat, high-risk zones. The robot can be first deployed into hazardous areas for assessment before human teams enter.
Smart Factory Automation
Digital twin generation, equipment monitoring, and autonomous security patrols in large industrial facilities.
Buyer's Guide: What to Know Before Buying a Unitree B2
The B2 is a significant industrial investment. Here's what procurement teams should understand.
Configuration matters enormously. The B2 is not a one-size-fits-all product. Sensor packages, LiDAR options, compute modules, and payload accessories all vary by deployment scenario. Work with Unitree or an authorized reseller to define your exact requirements before ordering. A power grid inspection deployment looks very different from a factory automation setup.
IP67 is a genuine differentiator. Full dust protection and short-term water immersion capability sets the B2 apart from most quadruped competitors. This matters for outdoor utilities, petrochemical plants, and any environment where weather or contamination is a factor.
Lead time is 60+ days. Unlike consumer Unitree products that ship from stock, the B2 is built to order. Plan procurement timelines accordingly, especially for large fleet deployments.
Autonomous charging is optional but recommended. For 24/7 patrol operations, the optional autonomous charging dock allows the B2 to return to base, swap or charge its battery, and resume patrol without human intervention. Budget for this if continuous operation is your use case.
The B2-W is not just a B2 with wheels. The wheeled variant fundamentally changes the operational profile. It trades some terrain agility for dramatically greater range (50 km with load) and speed (20 km/h). Choose the standard B2 for maximum terrain versatility. Choose the B2-W when your deployment involves long flat distances with occasional rough terrain.
Budget for payload accessories. The B2's real value comes from what you mount on it — thermal cameras, gas analyzers, pan-tilt modules, 5G/mesh relays. These are separate purchases from the base robot. Define your sensor stack early and ensure total payload stays under 40 kg for walking operations.
Support and service. The B2 is an industrial product with industrial support expectations. Unitree provides SDK documentation, technical support, and firmware updates. Authorized resellers like Weston Robot and RoboStore offer additional integration services. For mission-critical deployments, confirm your service level agreement before purchase.
Unitree B2 vs Similar Robots
- Unitree B2 vs Boston Dynamics Spot: Spot is the most well-known industrial quadruped, priced at approximately $74,500 for the base unit. The B2 runs faster (6 m/s vs 1.6 m/s), carries more payload (40 kg walking vs 14 kg), has better battery life (4–6 hours vs 90 minutes), and offers IP67 protection (vs IP54 on Spot). Spot has a more mature software ecosystem, fleet management tools, and a larger install base in Western markets. The B2 wins on raw performance; Spot wins on software maturity and enterprise support.
- Unitree B2 vs ANYbotics ANYmal: The ANYmal is a Swiss-made industrial quadruped targeting similar use cases. It is significantly more expensive (estimated $150,000+) with a smaller payload capacity. The ANYmal has strong European market presence and safety certifications. The B2 offers better price-to-performance.
- Unitree B2 vs Unitree Go2: Completely different products. The Go2 is a 15 kg consumer robot dog at $1,600–$13,250. The B2 is a 60 kg industrial workhorse at $100,000. The Go2 is for hobbyists, education, and content creation. The B2 is for power plants, mines, and factories.
- Unitree B2 vs Unitree B2-W: Same base platform, different locomotion. The B2-W adds pneumatic wheels for 20 km/h rolling speed and 50 km range on flat surfaces. Choose the standard B2 for maximum terrain versatility. Choose the B2-W when your deployment involves long distances on relatively flat ground with occasional stair or rough terrain segments.
