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Quasi Direct Drive Actuators

CubeMars AKE90-8 KV35 Quasi Direct Drive Actuator

CubeMars
China

The AKE90-8 KV35 quasi-direct drive actuator combines an 8:1 planetary stage with low-inertia control, producing 170 Nm peak and 55 Nm rated torque. Weighing 1.4 kg at 48 V, it is aimed at humanoid legs, exoskeletons and high-dynamic joint modules.

Applications
Humanoid RobotExoskeletonRehabilitation RobotJoint Module
Manufacturer Website
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Specifications

Rated Voltage (V)48
Rated Power (W)700
Rated Torque (Nm)55
Rated Current (A)21
Rated Speed (rpm)120
Peak Torque (Nm)170
Peak Current (A)72
No-load Speed (rpm)210
Reduction Ratio8:1
Weight (g)1400
Diameter (mm)107.5
Length (mm)43.5
Pole Pairs21
KV (rpm/V)35
Phase to Phase resistance (mΩ)164
Phase to Phase inductance (μH)235
Backlash (°)0.15
Ke (V/krpm)0.0285
Driving wayFOC

* Specifications are provided for reference. Please verify the latest specifications with the manufacturer.

Description

FAQ

Click "Manufacturer Website" to go to the brand's official product page, where you can buy online or contact their sales team directly.
The low 8:1 ratio keeps the output highly backdrivable, so external force is transmitted back to the motor for accurate force sensing and compliance control — a key requirement for legged and collaborative robots.
It produces up to 170 N·m of peak torque and 55 N·m continuous at 48 V, KV of 35 rpm/V. Match the supply and torque envelope to your joint design.

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