---
title: "CubeMars AK80-6 (KV100) specs"
description: "QDD / Proprioceptive actuator from CubeMars (T-Motor) (China). Peak torque 12 Nm, rated 6 Nm, weight 485 g, torque density 24.7 Nm/kg, price $470."
canonical: https://actuatorlist.com/actuators/cubemars-ak80-6
last-updated: 2026-11-01T14:05:43.000Z
---
# AK80-6 (KV100) by CubeMars (T-Motor)

> QDD / Proprioceptive actuator from CubeMars (T-Motor) (China). Peak torque 12 Nm, rated 6 Nm, weight 485 g, torque density 24.7 Nm/kg, price $470.

## Specifications

| Spec | Value |
| --- | --- |
| Category | QDD / Proprioceptive |
| Peak torque | 12 Nm |
| Rated torque | 6 Nm |
| Max speed | 600 rpm |
| Gear ratio | 6:1 |
| Weight | 485 g |
| Torque density | 24.7 Nm/kg |
| Price | $470 |
| Price per Nm | $39.2 |
| Backdrivable | yes |
| Backlash | n/a |
| Voltage | 24-48 V |
| Peak current | n/a |
| Communication | CAN |
| Control modes | position, velocity, torque, mit |
| Encoder | 14-bit magnetic (motor-side) |
| Integrated driver | yes |
| Availability | in production |
| Data status | Catalog headline specs spot-checked: confirm revision |

## Size a joint

- [Motor torque calculator](/tools/motor-torque-calculator?solve=power&t=6&n=600): **377 W** of shaft power at its rated 6 N·m and 600 rpm.
- [Robot arm torque calculator](/tools/robot-arm-torque-calculator?L=0.4,0.35,0.12&m=1.2,0.8,0.3&a=0.485,0.5,0&p=2): **31.9 N·m** at the shoulder with its 485 g at the elbow of a 2 kg-payload arm.

## Use cases

- quadruped leg
- robot arm
- exoskeleton

## Notes

Faster, lower-torque sibling of the AK80-9 (6:1 vs 9:1) used in exoskeletons and light legs. 600 rpm rated speed. max\_speed\_rpm listed is the manufacturer rated speed at 48V (no-load higher). Price ~$470 (CubeMars store $469.90).

## Sources

- [https://www.cubemars.com/product/ak80-6-kv100-robotic-actuator.html](https://www.cubemars.com/product/ak80-6-kv100-robotic-actuator.html)
- [https://www.cubemars.com/images/file/20240523/1716429938564781.pdf](https://www.cubemars.com/images/file/20240523/1716429938564781.pdf)
- [https://store.cubemars.com/products/ak80-6](https://store.cubemars.com/products/ak80-6)
- [https://www.digikey.com/en/products/detail/cubemars/AK80-6-KV100/16689764](https://www.digikey.com/en/products/detail/cubemars/AK80-6-KV100/16689764)

## Similar QDD / Proprioceptive actuators

- [GIM8108-8 (Steadywin)](https://actuatorlist.com/actuators/steadywin-gim8108-8): 58.7 Nm/kg
- [AK10-9 (V3.0 KV60) (CubeMars (T-Motor))](https://actuatorlist.com/actuators/cubemars-ak10-9): 55.2 Nm/kg
- [AK70-10 (KV100) (CubeMars (T-Motor))](https://actuatorlist.com/actuators/cubemars-ak70-10): 47.6 Nm/kg
- [AK80-9 (V3.0 KV100) (CubeMars (T-Motor))](https://actuatorlist.com/actuators/cubemars-ak80-9): 45.4 Nm/kg
- [GO-M8010-6 (Unitree)](https://actuatorlist.com/actuators/unitree-go-m8010-6): 44.7 Nm/kg

## Catalog comparisons

Catalog specifications and source caveats, not compatibility recommendations.

- [AK80-6 (KV100) vs AK80-9 (V3.0 KV100)](/comparisons/cubemars-ak80-6-vs-cubemars-ak80-9)
- [AK80-6 (KV100) vs qdd100 beta 3](/comparisons/cubemars-ak80-6-vs-mjbots-qdd100)
- [AK80-6 (KV100) vs GIM6010-8](/comparisons/cubemars-ak80-6-vs-steadywin-gim6010-8)

[Browse actuator comparisons](/compare).

## Machine-readable

- JSON: https://actuatorlist.com/api/v1/actuators/cubemars-ak80-6
- Catalog index for agents: https://actuatorlist.com/llms.txt