Schaeffler Presents A Compact Actuator for Humanoids With Gearbox, Motor, Encoder, And Controller

CES 2026: Drive Technology for Robots Schaeffler Presents a Compact Actuator for Humanoids With Gearbox, Motor, Encoder, And Controller

2026-01-07 By Manuel Christa | Translated by AI 2 min Reading Time

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At CES 2026 in Las Vegas, Schaeffler showcases a special actuator for robot joints: It transmits torque precisely and with minimal compliance, determining how controlled a robot moves its shoulder, hip, or knee.

Planetary gear actuator for humanoid robots: Schaeffler combines a two-stage planetary gearbox, electric motor, encoder, and controller into a compact drive unit for precise joint movements during continuous operation.(Image: Schaeffler AG) — Planetary gear actuator for humanoid robots: Schaeffler combines a two-stage planetary gearbox, electric motor, encoder, and controller into a compact drive unit for precise joint movements during continuous operation.
(Image: Schaeffler AG)

Schaeffler announces the world premiere of a planetary gear actuator specifically developed for humanoid robots at the trade fair. The company points out that a humanoid typically requires 25 to 30 actuators. Accordingly, the impact is significant when a manufacturer improves the size, precision, and robustness of each joint.

Joint Technology: Gearbox, Motor, Sensors, And Control in One Package

Schaeffler relies on a compact drive system that combines a two-stage planetary gearbox, an electric motor, as well as encoders and controllers in a space-optimized unit. This is intended to reduce the workload for integrators, as they have fewer individual components to design and wire.

A key aspect is back-drivability: While conventional actuators, according to Schaeffler, are often limited or not "back-drivable" at all, the new system is designed to allow smooth backward movement of the drive while remaining precise. Particularly in robotic joints that absorb external forces, this can influence safety, cycle time, and energy requirements.

Continuous Operation As A Goal: Heat, Torque Range, And Transparency

For long shift operations, Schaeffler focuses on thermal stability. The company specifies a torque range of 60 to 250 Nm. In practice, this covers typical joint tasks—from controlled movement of lightweight arms to loads on legs and hips, depending on the robot's design.

Schaeffler also refers to "Torque Transparency": The actuator is designed to transmit forces in such a way that the control system better detects external influences and finely adjusts movements. Combined with high efficiency, this aims at precise motion sequences with reduced energy consumption.

Schaeffler also emphasizes its manufacturing depth: All components are to come from its own development and production. The company ties this to the claim of being able to deliver consistent quality in larger quantities.

CES Side Notes: Bearing Technology, Autonomous Transport, And Vehicle Architectures

In addition to the robotics focus, Schaeffler brings other topics to CES. The company announces bearing solutions for energy generation and data centers, showcases autonomous material transport solutions such as a forklift demonstrator for tight spaces, and mentions technology components for software-defined vehicles—including zone controllers as well as sensors, actuators, and power electronics modules.

The exhibits can be seen from January 6 to 9, 2026, in the West Hall of the Las Vegas Convention Center, Booth 7301. (mc)

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