Actuation Redefined

Traction Drive Speed Reducer with Zero Backlash

Archimedes Drive is a traction drive based speed reducer, also known as a drive or gearbox without gears. Built around a simplified & scalable design, it delivers high torque in a compact and robust form factor. No backlash. Just pure, direct motion. Whether you’re building the next generation of precision robots or compact actuators, Archimedes Drive is ready. Robust. Silent. Scalable. Engineered to last.

New to traction drives? Read the full explanation: what is a traction drive speed reducer?

COMPOUND PLANETARY

TRACTION CONTACT

Resilient by Design

Survive shock loads, vibrations and collisions.

When peak torque exceeds the design limit, the rollers transition into micro-slip: temporary sliding without meaningful damage. The drive sheds the peak and returns to normal operation. No broken teeth, because there are no teeth.

How overtorque protection works >

Amplify Torque

High reduction ratios in a single stage through compound planetary mechanics.
Ensure exceptional accuracy and transparency with traction technology.

25 :1

200 :1

Ultimate Control

High Stiffness, Zero backlash. Exceptional Transparency.

Traction drive speed reducers offer exceptional stiffness and continuous traction keeps forces intact, enabling accurate transmission and intuitive motion control.

Redefine Accuracy

Zero Backlash. For life.

Smooth hollow cylinder shaped planets. As these planets rotate, rotational motion is transmitted from the input to the output with continuous contact.