Robots Atlas>ROBOTS ATLAS

Robot Joint Motors

CategoryMotors
Market classIndustrial
Introduction date1 January 2014
5 components
Motors

EC 60 flat

Maxon flat brushless DC motor 60 mm, up to 100 W, pancake form factor for space-constrained applications.

Motors

EC-i 40

Maxon brushless DC motor with internal rotor, up to 70 W power, designed for robotics and medical applications.

DeployedKollmorgen AKM2G-52 AI render
Motors·Kollmorgen

Kollmorgen AKM2G-52

High-torque AC synchronous servo motor from the AKM2G family, frame size 52 mm — delivers up to 30% more torque than the previous AKM generation in the same housing.

Weight1.5–3.4 kg
Torque1.6–4.4 N·m continuous, up to 12.6 N·m peak
Speedup to 8000 rpm
Deployed
Motors·Unitree Robotics

Unitree GO-M8010-6

Unitree outrunner BLDC quasi-direct-drive motor — joint actuator for Go1, Go2 and B1 quadruped legs, with absolute encoder and FOC controller.

TorqueContinuous ~6 N·m, peak ~23 N·m at output shaft (i ≈ 6.33:1)
SpeedNo-load up to ~30 rad/s at the output shaft
PrecisionAbsolutny enkoder na wale silnika
Deployedmaxon EC-i 52 High Torque AI render
Motors·maxon

maxon EC-i 52 High Torque

maxon EC-i 52 brushless DC inner-rotor motor, 52 mm diameter — 180 W nominal power, 0.421 N·m continuous torque and speeds up to 8000 rpm.

Weight680 g
Torque0.421 N·m continuous, 4.85 N·m peak
Speedup to 8000 rpm
Last updated: 23 March 2026