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Linear roller screw actuators

Linear actuators using a planetary roller screw (PRS) for power transfer with line contact instead of point contact.

CategoryActuators
Market classPrototype
1 component
PrototypeKepler KEPLERGEAR — planetary roller screw linear actuator (illustration)
Actuators·Kepler Robotics

Kepler KEPLERGEAR

Proprietary planetary roller screw linear actuator developed by Kepler Robotics, driving the leg and arm joints of the Forerunner K2 humanoid; reported 8,200 N peak thrust and 81.3% energy conversion efficiency.