Unitree B2-W Price and Specs for the Wheeled Robot Dog

Unitree B2-W Price and Store Availability

The official Unitree store lists the Unitree B2-W at $100,000.00 US dollars (USD) at the time of writing. That same store lists the standard legged B2 for $100,000. Reseller prices vary. For example, Top 3D Shop lists a sale price of $88,900 against a regular price of $97,600. It lists a five to ten business day lead time. Another reseller, RoboStore, lists the B2-W at $96,599 and shows it as sold out at the time of writing.

At The Bot Scout, what we see readers get wrong most often is comparing a bare B2-W price with a fully equipped quote. You can see how other models scale in our Unitree robot price overview. Base listings often exclude sensors. For instance, RoboStore notes that a light detection and ranging (LiDAR) module is not included by default and requires an optional configuration. Adding sensors or compute modules changes the final invoice. Buyers should confirm exact hardware inclusions directly on the Top 3D Shop B2-W page before placing a deposit.

Top 3D Shop also offers purchase or lease terms, though it publishes no specific lease rates. Unitree publishes no direct delivery timeline for orders placed through its main store. Buyers should request firm delivery dates in writing. In addition, overseas shipping fees and import tariffs remain unlisted on public portals.

Industrial Roles and Wheeled-Leg Design

The Unitree B2-W serves industrial inspection, patrol, and payload work. It combines four articulated legs with driven motorized wheels at each foot. This hybrid design allows two distinct modes of travel. The B2-W rolls over smooth floors and steps over rough ground and obstacles where plain wheels get stuck. You can see other heavy models in our guide to industrial quadruped robots.

Each foot houses a 225 mm diameter wheel. Unitree states that the wheel motors produce 40 newton-metres (N·m) of torque and reach a wheel speed of 50 rad/s. On flat ground, the machine hits speeds up to 15 km/h. That is much faster than standard quadruped walking gaits. The chassis measures approximately 1098 by 550 by 758 mm when standing. It drops to 950 by 550 by 450 mm when lying prone.

This footprint helps the machine carry substantial equipment. The standing payload capacity reaches 120 kg. For active walking or rolling locomotion, Unitree rates the payload at greater than 40 kg. That capacity accommodates heavy sensors, cameras, or test gear. However, the machine does not suit lightweight desktop tasks or tight domestic spaces. For smaller research setups, compact machines fit better.

Published Physical and Mechanical Specs

Unitree's spec page lists detailed metrics for the Unitree B2-W chassis, battery, and motors. The robot weighs approximately 85 kg with its battery installed. The internal battery exceeds 2 kWh at 58 V. RoboStore lists the battery capacity as 45 Ah (2250 Wh) and cites a runtime of about 4 hours. Unitree publishes an operational endurance range of up to 25 km carrying a 40 kg load, or about 30 km unloaded.

RoboStore reports a maximum joint torque of 360 N·m across the 12 leg joints. The machine handles continuous stairs measuring 20 to 25 cm in riser height. It also tackles a forward climbing step of 40 cm. The published slope limit exceeds 45 degrees. Unitree rates the chassis at an ingress protection (IP) rating of IP67. The published operating temperature spans from -20 °C to 55 °C.

Computing relies on two separate onboard processors. Unitree includes an Intel Core i5 for platform functions and an Intel Core i7 for user development. Buyers can expand this setup. The spec sheet notes options for an extra Intel Core i7 or NVIDIA Orin NX modules, supporting up to three devices. You can read Unitree's full hardware breakdown directly on the Unitree B2-W spec page.

Evaluating Claims and Autonomy Limits

The useful evidence for the B2-W is Unitree's published spec sheet. Unitree's promotional clips are maker claims and do not prove field performance. Videos rarely show continuous operation under heavy payload loads. They also do not reveal how much remote human control was required during filming. Buyers should treat promotional clips as demonstrations of mechanical capability rather than turn-key facility automation.

Unitree's published specs do support specific physical capabilities. An IP67 rating indicates dust tightness and water resistance during outdoor exposure. The 20 to 25 cm stair limit gives clear mechanical boundaries. However, Unitree does not publish the robot's runtime under real-world patrol loads with third-party LiDAR spinning. Unitree does not publish which autonomy features each package includes. Before a site pilot, compare your stair risers and loads with Unitree's published limits, and ask the seller what autonomy the quote includes.

Navigating real facilities introduces non-standard obstacles. For a broader look at how different legged machines handle steps, review our guide to robots that can climb stairs. Buyers should request live demonstration logs from vendors before purchasing.

Comparing Alternative Wheeled Quadrupeds

Several manufacturers now build wheeled-legged robots. Within Unitree's own catalog, the smaller Go2-W provides a lighter alternative. The official Unitree Go2-W page lists an 18 kg weight, an 8 kg payload, and a 2.5 m/s top speed. Reseller pricing for the Go2-W is contested. The Go2-W costs $13,999 at Top 3D Shop and from $20,695 for development-capable versions at Roboworks, so confirm the version. The standard walking Go2 starts at $1,600 on Unitree's Go2 store page.

Other manufacturers target industrial patrol and research. Robotics and Automation News reported that the Deep Robotics Lynx M20 Pro carries 15 kg, reaches 5 m/s, climbs 25 cm stair risers, and offers an IP66 rating. Deep Robotics also won an iF Design Award for the Lynx M20, as noted by GlobeNewswire. The LimX TRON 2 provides a modular alternative. Humanoids Daily reported that TRON 2 launched at $25,000 for its 3-in-1 edition. According to LimX Dynamics, TRON 2 supports a 30 kg payload in wheeled-leg form.

Delivery robots also use wheels and legs. For instance, The Robot Report reported that Amazon acquired Rivr, maker of the Rivr Two stair-climbing delivery machine. TechCrunch noted the Rivr Two carries 30 kg and travels up to 15 km/h, though it is not sold publicly. To see how alternative designs compare, check our guide on Unitree alternatives.

Boston Dynamics Spot Comparison

The Unitree B2-W and Boston Dynamics Spot serve overlapping inspection duties. They take very different design routes. You can read our broader analysis in the Unitree vs Boston Dynamics comparison. Boston Dynamics publishes no retail price on its Spot product page, directing buyers to contact sales. In contrast, Unitree publishes an exact $100,000 price on its official store. That pricing transparency helps buyers.

Mechanical performance diverges sharply. Spot weighs 33.8 kg with its battery, making it much lighter than the 85 kg B2-W. However, the B2-W carries far more weight. Unitree lists a walking payload greater than 40 kg, whereas Spot carries up to 14 kg. The B2-W also runs faster on flat ground, hitting 15 km/h on its wheels compared to Spot's 1.6 m/s walking speed. Our guide to Boston Dynamics Spot alternatives covers other options.

Obstacle clearance depends on the specific geometry. Spot handles a maximum step height of 300 mm (11.8 inches), which beats the B2-W's 20 to 25 cm continuous stair rating. However, Unitree lists a 40 cm forward obstacle climb for the B2-W. Spot is rated at IP54, while Unitree publishes an IP67 rating for the B2-W. Spot provides an average runtime of 90 minutes. RoboStore lists the B2-W runtime at about 4 hours.

Who Should Buy the Unitree B2-W

The Unitree B2-W suits industrial buyers whose operations match the published specifications. It delivers a 15 km/h top speed, a 120 kg standing payload, and an IP67 ingress rating. However, handling an 85 kg robot requires physical planning. At 85 kg, the B2-W is too heavy for one person to carry. Smaller research facilities should look at lighter quadruped platforms instead. The standard Unitree Go2 or Go2-W provides a more manageable form factor.

Support terms require scrutiny before placing an order. Unitree does not publish warranty duration or United States support terms for the B2-W on its official pages. Get replacement parts, service and customs terms in writing, and check whether the quote includes delivery. You can check current backorder status directly on Top 3D Shop's B2-W page.