Walker X
UBTech's next-generation large humanoid service robot, globally unveiled at WAIC 2021 in Shanghai on July 7, 2…

A 62-DOF wheeled humanoid built around X Square's WALL world model for home and logistics manipulation.
Quanta X2 is X Square Robot's second-generation wheeled humanoid. It stands 164 cm, reaches 1.8 m vertically, and carries 62 degrees of freedom when fitted with its optional 20-DOF dexterous hands; the 6-DOF torso and two 6 kg-rated arms give a 12 kg dual-arm task payload. Perception combines three RGB-D cameras, three BEV surround cameras, a 2D LiDAR, two single-point ToF sensors and four ultrasonics. X Square pairs the body with its WALL-A/WALL-B embodied foundation models and positions it for home and logistics work.
| Height | 164 cm |
|---|---|
| Form factor | Full-size |
| Locomotion | Wheeled |
|---|---|
| Degrees of freedom | 62 |
| DOF breakdown | 62 total when equipped with 20-DOF hands; 6 torso DOF and 2 chassis DOF, with 2-DOF grippers in the standard configuration. |
| Arm payload | 12 kg |
| Top speed | 3.6 km/h |
| Actuators | Wheeled base with 2 DOF and 1 m/s travel; 6-DOF torso; two arms with 765 mm span, +/-0.03 mm repeatability and 1.8 m/s end-effector speed. |
| Compute | Not published. |
|---|---|
| Sensing | 1 x 2D LiDAR, 4 ultrasonic sensors, 3 RGB-D cameras, 2 single-point ToF sensors, 3 BEV surround cameras. |
| Hands | Optional five-finger dexterous hand with 20 DOF; standard two-finger gripper with 2 DOF. |
| Hand DOF | 20 |
| Availability | Offered for purchase inquiry in China; early commercial pilots in home and logistics scenarios. |
|---|---|
| Target market | Home service, logistics and general manipulation. |
| SDK | Not published. |
| Software / OS | WALL-A and WALL-B embodied foundation models; vision-language-action control. |
| Deployments & partners | Home and logistics pilots; X Square has demonstrated manipulation and data-collection deployments with partners. |
| Safety & certifications | Not published. |
| Variants | Quanta X2 |
Claims on this profile are linked to primary reporting and manufacturer material where available.
Specifications are sourced from public materials and may change. Always confirm commercial terms with the manufacturer.