---
title: "Hiwonder LX-16A specs"
description: "Smart Servo actuator from Hiwonder (LewanSoul) (China). Peak torque 1.9 Nm, rated n/a, weight 52 g, torque density 36.7 Nm/kg, price $19."
canonical: https://actuatorlist.com/actuators/hiwonder-lx-16a
last-updated: 2026-11-01T14:05:43.000Z
---
# LX-16A by Hiwonder (LewanSoul)

> Smart Servo actuator from Hiwonder (LewanSoul) (China). Peak torque 1.9 Nm, rated n/a, weight 52 g, torque density 36.7 Nm/kg, price $19.

## Specifications

| Spec | Value |
| --- | --- |
| Category | Smart Servo |
| Peak torque | 1.9 Nm |
| Rated torque | n/a |
| Max speed | 53 rpm |
| Gear ratio | n/a |
| Weight | 52 g |
| Torque density | 36.7 Nm/kg |
| Price | $19 |
| Price per Nm | $9.9 |
| Backdrivable | n/a |
| Backlash | n/a |
| Voltage | 6.0-8.4 V |
| Peak current | 3 A |
| Communication | TTL |
| Control modes | position, velocity |
| Encoder | potentiometer (0-1000 counts over 240 deg) |
| 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=1.91&n=53): **10.6 W** of shaft power at its peak 1.91 N·m and 53 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=0.052,0.5,0&p=2): **30.2 N·m** at the shoulder with its 52 g at the elbow of a 2 kg-payload arm.

## Use cases

- quadruped leg
- robot arm

## Notes

Full-metal-gear serial bus servo popular in SpotMicro-class hobby quadrupeds and the Hiwonder xArm. Stall torque 17 kg.cm (1.67 N.m) @6V and 19.5 kg.cm (1.91 N.m) @7.4V; speed 0.19 s/60 deg (~53 rpm) @7.4V; 240 deg range; stall current 2.4-3A; position accuracy 0.3 deg; weight 52 g. Uses a private half-duplex TTL protocol (needs Hiwonder debug board). Price approximate.

## Sources

- [https://www.hiwonder.com/products/lx-16a](https://www.hiwonder.com/products/lx-16a)
- [https://cdn.robotshop.com/rbm/a5e9ab51-86bc-497b-adac-003de3088fb7/9/92896585-5e83-4c7c-a663-650b81e5978b/67e9729b\_lx-16a-serial-bus-servo-user-manual.pdf](https://cdn.robotshop.com/rbm/a5e9ab51-86bc-497b-adac-003de3088fb7/9/92896585-5e83-4c7c-a663-650b81e5978b/67e9729b_lx-16a-serial-bus-servo-user-manual.pdf)
- [https://www.robotshop.com/products/hiwonder-hiwonder-lx-16a-full-metal-gear-serial-bus-servo-with-real-time-feedback-function-rc-robot-control-angle-240](https://www.robotshop.com/products/hiwonder-hiwonder-lx-16a-full-metal-gear-serial-bus-servo-with-real-time-feedback-function-rc-robot-control-angle-240)

## 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/hiwonder-lx-16a
- Catalog index for agents: https://actuatorlist.com/llms.txt