Boston Dynamics' proprietary joint actuator used in the fully-electric Atlas (2024+) — high torque density and 360° continuously rotating joints.
Integrated PMSM joint actuator with reducer, driver and absolute encoder used in Fourier GR-1 and GR-2 humanoid robots.
Tesla's planetary roller-screw linear actuator — 14 units in the legs of Optimus Gen 2, shock- and brinelling-resistant.
Family of Xiaomi’s self-developed humanoid joint motors built for the CyberOne prototype (2022). The strongest variant (knee) reaches a peak torque of 300 Nm; the robot has 21 total degrees of freedom.
