Pittsburgh, PA — Humanoid Joint Actuators

Actuators engineered for humanoid joints.

BLDC + harmonic drive + FOC stack. 42 Nm/kg peak torque density. ROS 2 native. Ships from Pittsburgh.

42 Nm/kg Peak Torque Density
0.08 Nm Cogging Torque (RMS)
19-bit CPR Encoder Resolution
400 Hz FOC Control Bandwidth
IP67 Environmental Rating (TK-480)
Motion Control Stack

From encoder signal to joint torque command in one stack.

FOC firmware running on STM32 at 400 Hz. ROS 2 / micro-ROS node included. MoveIt 2 compatible. EtherCAT and CANopen on the same board. No middleware porting required.

Explore Motion Stack
Tendonkindle actuator on dynamometer test stand — torque and thermal characterization
Applications

Who builds with Tendonkindle

Humanoid OEMs

Joint actuator supply from knee to shoulder. Torque density and backdrivability specs on request.

University Labs

ROS 2 examples, open URDF models, and academic lab pricing. Evaluation kit includes URDF, SRDF, and quickstart guide.

Exoskeleton Builders

Force-reflection and impedance tuning APIs. Human-in-loop safe backdrivability.

Advanced Mfg R&D

Precision assembly arms. Collaborative robot retooling. Payload-to-weight > 3:1.

Integration-ready out of the box

ROS 2 / micro-ROS
EtherCAT / CANopen
MoveIt 2 SRDF included

Need a joint actuator that closes your spec sheet?

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