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Unitree B2-W

Hybrid legged-wheeled quadruped combining walking agility with rolling efficiency. 75 kg with 12-inch pneumatic tires, up to 20 km/h (5.56 m/s) rolling speed. 120 kg max payload, 2+ kWh battery for 50 km range with 40 kg load. IP67, 360 N·m motors, dual locomotion modes. Handles -20°C to 55°C.

Unitree B2-W

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Technical Specifications

Unitree B2-W Specs

Weight	75 kg (with battery)
Standing Size	1098 x 450 x 745 mm
Lying Size	880 x 460 x 330 mm
Max Speed (rolling)	20 km/h (5.56 m/s)
Payload	120 kg
Motor Torque	360 N·m
Wheel Torque	50 N·m
Tire Size	12-inch pneumatic (225 mm)
Battery	2+ kWh @ 58 V
Range	50 km (40 kg load)
IP Rating	IP67
Temperature Range	-20°C to 55°C
Climb Angle	45°
Stair Step	25 cm

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