---
title: "MyActuator RMD-X6-8 V3 specs"
description: "Integrated Joint actuator from MyActuator (China). Peak torque 8 Nm, rated 4.5 Nm, weight 490 g, torque density 16.3 Nm/kg, price $355."
canonical: https://actuatorlist.com/actuators/myactuator-rmd-x6-8
last-updated: 2026-11-01T14:05:43.000Z
---
# RMD-X6-8 V3 by MyActuator

> Integrated Joint actuator from MyActuator (China). Peak torque 8 Nm, rated 4.5 Nm, weight 490 g, torque density 16.3 Nm/kg, price $355.

## Specifications

| Spec | Value |
| --- | --- |
| Category | Integrated Joint |
| Peak torque | 8 Nm |
| Rated torque | 4.5 Nm |
| Max speed | 310 rpm |
| Gear ratio | 8:1 |
| Weight | 490 g |
| Torque density | 16.3 Nm/kg |
| Price | $355 |
| Price per Nm | $44.4 |
| Backdrivable | n/a |
| Backlash | n/a |
| Voltage | 24-48 V |
| Peak current | n/a |
| Communication | CAN, RS-485 |
| Control modes | position, velocity, torque |
| Encoder | 18-bit magnetic (dual-encoder option) |
| 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=4.5&n=310): **146 W** of shaft power at its rated 4.5 N·m and 310 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=0.49,0.5,0&p=2): **31.9 N·m** at the shoulder with its 490 g at the elbow of a 2 kg-payload arm.

## Use cases

- robot arm
- quadruped leg
- agv

## Notes

Entry-level planetary joint module (MC-X-300 driver built in). Peak torque 8 N.m and rated 4.5 N.m at 310 rpm per RobotShop V3 1:8 listing. Net weight 490 g per the MyActuator X6-8 spec sheet and Amazon listing.

## Sources

- [https://www.robotshop.com/products/myactuator-rmd-x6-v3-can-bus-18-mc-x-300-o-brushless-servo-driver](https://www.robotshop.com/products/myactuator-rmd-x6-v3-can-bus-18-mc-x-300-o-brushless-servo-driver)
- [https://www.myactuator.com/downloads-xseries](https://www.myactuator.com/downloads-xseries)
- [https://www.amazon.com/MyActuator-RMD-X6-Brushless-Lightweight-GUI3-0/dp/B0B82D36B4](https://www.amazon.com/MyActuator-RMD-X6-Brushless-Lightweight-GUI3-0/dp/B0B82D36B4)
- [https://aifitlab.com/products/myactuator-rmd-x6-8-motor](https://aifitlab.com/products/myactuator-rmd-x6-8-motor)

## Similar Integrated Joint actuators

- [EC-A4315-P2-36 (ENCOS)](https://actuatorlist.com/actuators/encos-ec-a4315-p2-36): 154.6 Nm/kg
- [EC-A6416-P2-25 (ENCOS)](https://actuatorlist.com/actuators/encos-ec-a6416-p2-25): 149.1 Nm/kg
- [DM-J6248P-2EC (DAMIAO (DMBots))](https://actuatorlist.com/actuators/damiao-dm-j6248p-2ec): 147 Nm/kg
- [EC-A4310-P2-36 (ENCOS)](https://actuatorlist.com/actuators/encos-ec-a4310-p2-36): 94.2 Nm/kg
- [RMD-X8-120 (MyActuator)](https://actuatorlist.com/actuators/myactuator-rmd-x8-120): 85.7 Nm/kg

## Catalog comparisons

Catalog specifications and source caveats, not compatibility recommendations.

- [DM-J4310-2EC vs RMD-X6-8 V3](/comparisons/damiao-dm-j4310-2ec-vs-myactuator-rmd-x6-8)
- [RMD-L-9015-16T vs RMD-X6-8 V3](/comparisons/myactuator-rmd-l-9015-vs-myactuator-rmd-x6-8)
- [RMD-X6-8 V3 vs RobStride 00](/comparisons/myactuator-rmd-x6-8-vs-robstride-00)
- [RMD-X6-8 V3 vs RobStride 01](/comparisons/myactuator-rmd-x6-8-vs-robstride-01)
- [RMD-X6-8 V3 vs RobStride 02](/comparisons/myactuator-rmd-x6-8-vs-robstride-02)

[Browse actuator comparisons](/compare).

## Machine-readable

- JSON: https://actuatorlist.com/api/v1/actuators/myactuator-rmd-x6-8
- Catalog index for agents: https://actuatorlist.com/llms.txt