Unitree B1

Most robots earn their sales pitch in a demo; the Unitree B1 earned its across years of shifts. Launched in 2021 as Unitree's first industrial grade quadruped and still available in the catalog today, the B1 is the veteran of the line: an approximately 50 kilogram platform sealed to a genuine IP68 waterproof rating, immersion class protection that lets it work rain, mud and washdown environments, carrying working loads around 20 kilograms with standing capacity near 80, the machine whose plant, utility and research deployments first proved that legged robots could hold industrial duty, and whose continued availability makes it the accessible entry into heavy industrial legged robotics.

The B1's position in today's lineup is the value veteran's: beneath the flagship B2, whose 360 newton meter joints Unitree markets as a 170 percent performance increase over this very machine, and alongside the modern A2 and AS2 tiers. What the years have not changed is the formula that keeps it selling: the deepest waterproofing in the family, honest industrial payloads, a mature and thoroughly documented platform with parts, including B1 motors, in the accessory catalog, and pricing beneath the current generation, the combination that suits budget conscious industrial pilots, wet environment specialists and research fleets to this day.

The Unitree B1 for sale, with full specifications, can be explored through this page.

Background

The dog that went to work first

In 2021, industrial legged robotics meant one very expensive Western machine, and Unitree's answer was characteristic: the B1, industrial capability at disruptive pricing, waterproofed beyond anything in the category and offered to the inspection, utility and research customers the field's economics needed. Its deployments generated the operational evidence, and the customer relationships, on which Unitree's entire industrial business was built, and the machine has remained in the catalog ever since, the rare pioneer still working while its successors headline.

Why the veteran stays on sale

The B1 survives in the lineup because its trade remains rational: not every mission needs the B2's 275 TOPS, six meter per second sprint or 40 kilogram payloads, and for the wet, steady, 20 kilogram class work the B1 was built around, the veteran delivers at veteran pricing, with the IP68 sealing that even its flagship successor's IP67 rating does not formally exceed, the specification that keeps wet environment buyers reading this page first.

Technical Specifications

Figures follow the platform's published class specifications; configurations, sensing and compute options vary by build and are confirmed at quotation.

How does the B1 compare to the B2?

They answer different budgets asking the industrial question. The B2 is the maximum answer: joints 170 percent stronger at 360 newton meters, double the payload at 40 kilograms, the class speed record at 6 meters per second, 275 TOPS of onboard AI and wheel leg switching, for the sites and missions that consume all of it. The B1 is the sufficient answer: the same industrial seriousness, deeper formal waterproofing, and the 20 kilogram class capability that most inspection rounds, wet site missions and research programs actually specify, at the veteran's price. The modern A2 sits between them with hot swap endurance and current generation sensing; the honest decision rule runs: B1 for wet work and value fleets, A2 for the daily route at current technology, B2 when the site is the hardest part of the job.

Technology

Waterproofing as the signature

The B1's IP68 rating remains its calling card: full immersion class sealing, engineered when Unitree decided its first industrial dog would be defined by surviving water, and still the family's deepest formal waterproof specification, the reason the veteran keeps appearing wherever the work is wet, flooded plant floors, storm season perimeters, washdown rated food and process environments.

Industrial structure, proven mileage

Fifty kilograms of industrial construction carry the B1's honest load numbers, 20 kilograms working, 80 standing, across stairs, slopes and broken ground, on the self developed actuator lineage the whole family shares, with the reliability record that only years of fielded units produce, the mileage no launch specification can claim.

A mature platform to build on

The B1 offers what veterans uniquely can: complete documentation, a stable SDK, Jetson class computing options, established payload integrations and a parts ecosystem, B1 motors listed in Unitree's accessory catalog, backed by Unitree support, the known quantity that research fleets and integrators price risk against, with cross brand mission software like RoboPatrol and RoboInspect in the robot software catalog running its rounds.

What is the Unitree B1 used for?

1. Wet environment inspection: flooded, rain exposed and washdown sites across inspection robotics, the IP68 missions the B1 was born for.
2. Utility and plant rounds: steady industrial routes across industrial robotics at 20 kilogram class payloads.
3. Security patrol: all weather perimeter circuits across security robotics where rain never cancels the round.
4. Research fleets: proven, documented, affordably multiplied platforms across research robotics and field robotics programs.
5. Budget conscious industrial pilots: first legged deployments proving the case across logistics and site missions before fleets scale up the quadruped ladder.
6. Emergency and wet response: reconnaissance where the ground is underwater across emergency response robotics.

Pricing and Availability

The Unitree B1 is available for purchase worldwide, from single units to fleet programs, alongside the A2, B2 and the full Unitree catalog on Robots International, with B1 motors and spares available through the accessory channel. Unitree B1 price and cost vary by configuration, sensing and compute options and destination, so buyers seeking the B1 for sale should request a current quotation for their requirements. Purchasing inquiries, specification sheets and availability details for those looking to buy the Unitree B1 can be found on this page.

Frequently Asked Questions

What is the Unitree B1?

The B1 is Unitree's first industrial quadruped, launched in 2021 and still available today: an approximately 50 kilogram, IP68 waterproof robot dog carrying around 20 kilograms on the move and up to 80 standing, the proven veteran and value tier of the industrial line beneath the B2 flagship.

Is the Unitree B1 still available?

Yes, the B1 remains in Unitree's catalog and is available for purchase, with B1 motors and spare parts supported through the accessory channel, the veteran platform continuing to serve wet environment, value industrial and research fleet buyers alongside its newer siblings.

Why is the Unitree B1 important?

It proved industrial legged robotics could be a market: immersion sealed, genuinely deployable and disruptively priced, the machine whose fielded years built the evidence and customer base Unitree's whole industrial line stands on, and whose formula still earns its catalog place today.

What are the benefits of the Unitree B1?

Key benefits include the family's deepest formal waterproofing at IP68, honest 20 kilogram working and 80 kilogram standing loads, veteran pricing beneath the current generation, a mature documented platform with established parts supply, proven multi year field reliability and the ecosystem of the quadruped market leader.

What is the difference between the B1 and B2?

Generation and maximums: the B2 rebuilds the B1's joints 170 percent stronger to 360 newton meters, doubles payload to 40 kilograms, adds the 6 meter per second class speed record, 275 TOPS computing and wheel leg switching, while the B1 answers 20 kilogram class and wet environment missions at the veteran's price, with formally deeper IP68 sealing.

Who should buy the Unitree B1 today?

Wet environment operators for whom IP68 is the specification, budget conscious industrial pilots proving the legged case, research programs multiplying a documented platform across a fleet and any buyer whose mission fits 20 kilogram class work better than flagship pricing.

Where can I buy the Unitree B1 and what does it cost?

The B1 is for sale through Robots International, serving markets worldwide with delivery, customs clearance and support. Because cost varies by configuration and options, buyers should request a tailored quotation. Full purchasing details are available on this page.

Summary

The Unitree B1 is the industrial line's working elder: fifty kilograms of 2021 conviction, sealed to IP68 against the water that defines its missions, carrying the honest loads most rounds actually weigh, and still in the catalog because years of fielded shifts keep proving the formula. Beneath the record setting B2 whose improvements are literally measured against it, the veteran holds the value tier, the wet tier and the proven tier all at once, with parts in the catalog and a decade's documentation behind every unit. As the origin of Unitree's industrial quadruped business, and its most accessible working answer today, the Unitree B1 stands as the definitive proven entry into heavy industrial legged robotics.