Flexiv Rizon

Flexiv's 7-axis force-sensing “adaptive” robot arm, well-suited to delicate contact work.

Rizon is the 7-axis “adaptive” robot arm series from Flexiv, with the most common model, the Rizon 4, carrying a 4 kg payload and a reach of about 780 mm. Its defining feature is full-body force sensing: every joint has a torque sensor, paired with high-precision force-control algorithms, letting it sense forces as small as about 0.1 N and perform hybrid force/position control, meaning some directions are position-controlled and others force-controlled, plus multi-point collision detection; the “s” variants add a six-axis force/torque sensor at the wrist. Compared with an ordinary position-only industrial arm, it is well-suited to contact-rich work that needs a “sense of touch,” such as polishing, fitting parts together, and assembly. In embodied-AI research, it is often used as an experimental platform for contact-rich manipulation and force-based policy learning.

ExampleDoing a peg-in-hole insertion with a Rizon 4: vision first roughly aligns the peg with the hole, and then impedance control feels the contact forces as it pushes the peg the rest of the way in.

Also called

Rizon 4, Rizon 4s

Related

Flexiv Robotics · 7-DoF Robot Arm · Force Control · Joint Torque Sensor · Contact-rich Manipulation · Hybrid Force/Position Control

Sources

Flexiv Rizon - The Adaptive 7-Axis Robot Arm with Force Control
Rizon 4 | World's First 7-axis Adaptive Robot - A3

As of

2026-09