---
title: "Dynamixel XL330-M077-T specs"
description: "Smart Servo actuator from Robotis (Dynamixel) (South Korea). Peak torque 0.2 Nm, rated n/a, weight 18 g, torque density 11.9 Nm/kg, price $27.49."
canonical: https://actuatorlist.com/actuators/dynamixel-xl330-m077-t
last-updated: 2026-11-01T14:05:43.000Z
---
# XL330-M077-T by Robotis (Dynamixel)

> Smart Servo actuator from Robotis (Dynamixel) (South Korea). Peak torque 0.2 Nm, rated n/a, weight 18 g, torque density 11.9 Nm/kg, price $27.49.

## Specifications

| Spec | Value |
| --- | --- |
| Category | Smart Servo |
| Peak torque | 0.2 Nm |
| Rated torque | n/a |
| Max speed | 383 rpm |
| Gear ratio | 77.5:1 |
| Weight | 18 g |
| Torque density | 11.9 Nm/kg |
| Price | $27.49 |
| Price per Nm | $127.9 |
| Backdrivable | n/a |
| Backlash | n/a |
| Voltage | 3.7-6.0 V |
| Peak current | 1.5 A |
| Communication | TTL |
| Control modes | current, velocity, position, extended\_position, current\_based\_position, pwm |
| Encoder | 12-bit absolute (4096 steps), contactless magnetic |
| 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=0.215&n=383): **8.62 W** of shaft power at its peak 0.215 N·m and 383 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=0.018,0.5,0&p=2): **30.1 N·m** at the shoulder with its 18 g at the elbow of a 2 kg-payload arm.

## Use cases

- robot arm

## Robots that use it

- [Reachy Mini](https://actuatorlist.com/robots#pollen-reachy-mini) by Pollen Robotics: Open-source desktop companion robot from Pollen and Hugging Face, sold as a kit. A Stewart platform of six servos gives the head 6 DOF, with body rotation and two antennas on top. $399 Lite runs from a computer over USB; $499 Wireless adds a Raspberry Pi CM4 and battery.

## Notes

Fast, low-ratio sibling of the XL330-M288-T in the same 18g plastic-gear case. Stall torque 0.215 N.m at 1.47A and no-load 383 rpm quoted at 5.0V (0.180 N.m / 278 rpm at 3.7V, 0.228 N.m / 456 rpm at 6.0V). Cored motor, 77.5:1. Drives the antennas on Pollen's Reachy Mini. Protocol 2.0 over TTL.

## Sources

- [https://robotis.us/products/dynamixel-xl330-m077-t](https://robotis.us/products/dynamixel-xl330-m077-t)
- [https://emanual.robotis.com/docs/en/dxl/x/xl330-m077/](https://emanual.robotis.com/docs/en/dxl/x/xl330-m077/)
- [https://github.com/ROBOTIS-GIT/emanual/blob/master/\_data/dxl\_x\_info.yml](https://github.com/ROBOTIS-GIT/emanual/blob/master/_data/dxl_x_info.yml)

## Similar Smart Servo actuators

- [PH54-200-S500-R (Dynamixel-P / Pro+) (Robotis (Dynamixel))](https://actuatorlist.com/actuators/dynamixel-ph54-200-s500-r): 85.4 Nm/kg
- [STS3250 (12V, 50 kg.cm) (Feetech)](https://actuatorlist.com/actuators/feetech-sts3250): 65.8 Nm/kg
- [XM540-W270-T (Robotis (Dynamixel))](https://actuatorlist.com/actuators/dynamixel-xm540-w270-t): 64.2 Nm/kg
- [XH540-W270-T (Robotis (Dynamixel))](https://actuatorlist.com/actuators/dynamixel-xh540-w270-t): 60 Nm/kg
- [STS3215 (12V, 30 kg.cm) (Feetech)](https://actuatorlist.com/actuators/feetech-sts3215): 53.5 Nm/kg

## Machine-readable

- JSON: https://actuatorlist.com/api/v1/actuators/dynamixel-xl330-m077-t
- Catalog index for agents: https://actuatorlist.com/llms.txt