---
title: "Feetech SCS15 specs"
description: "Smart Servo actuator from Feetech (China). Peak torque 1.7 Nm, rated n/a, weight 56 g, torque density 29.8 Nm/kg, price $25."
canonical: https://actuatorlist.com/actuators/feetech-scs15
last-updated: 2026-11-01T14:05:43.000Z
---
# SCS15 by Feetech

> Smart Servo actuator from Feetech (China). Peak torque 1.7 Nm, rated n/a, weight 56 g, torque density 29.8 Nm/kg, price $25.

## Specifications

| Spec | Value |
| --- | --- |
| Category | Smart Servo |
| Peak torque | 1.7 Nm |
| Rated torque | n/a |
| Max speed | 73 rpm |
| Gear ratio | 275:1 |
| Weight | 56 g |
| Torque density | 29.8 Nm/kg |
| Price | $25 |
| Price per Nm | $15.0 |
| Backdrivable | n/a |
| Backlash | n/a |
| Voltage | 6.0-8.4 V |
| Peak current | n/a |
| Communication | TTL |
| Control modes | position, velocity |
| Encoder | potentiometer, 10-bit (1024 steps over ~215 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=1.67&n=73): **12.8 W** of shaft power at its peak 1.67 N·m and 73 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=0.056,0.5,0&p=2): **30.2 N·m** at the shoulder with its 56 g at the elbow of a 2 kg-payload arm.

## Use cases

- robot arm
- quadruped leg

## Notes

Older Feetech SCS-series bus servo using a potentiometer (not a magnetic encoder), ~200 deg servo range. Stall torque quoted across voltages: 15 kg.cm (1.47 N.m) @6V, 16.5 kg.cm @7.4V, 17 kg.cm (1.67 N.m) @8.4V; speed up to 73 rpm @8.4V. Half-duplex TTL multi-drop bus.

## Sources

- [https://www.feetechrc.com/en/scs\_ttl\_Servo.html](https://www.feetechrc.com/en/scs_ttl_Servo.html)
- [https://ecksteinimg.de/Datasheet/MO01016/SCS15.pdf](https://ecksteinimg.de/Datasheet/MO01016/SCS15.pdf)
- [https://grobotronics.com/servo-robot-17kg.cm-metal-gears-uart-feetech-scs15.html](https://grobotronics.com/servo-robot-17kg.cm-metal-gears-uart-feetech-scs15.html)

## 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/feetech-scs15
- Catalog index for agents: https://actuatorlist.com/llms.txt