# Feetech STS3215-C018 30 kg·cm 12V Servo

> Feetech STS3215-C018 is the 12 V version of the STS3215 bus servo: 30 kg·cm stall and 10 kg·cm rated torque at 12 V, 45 rpm no-load, on a 4–14 V supply. Same 1:345 gearing, 45.2 × 24.7 × 35 mm body and 12-bit magnetic encoder as the 7.4 V C001; the difference is the motor and supply voltage. TTL bus to 1 Mbps, IDs 0–253, 55 g.

- Manufacturer: Feetech
- Part number: ST-3215-C018
- Category: Actuators
- Canonical page: https://www.xirkit.io/products/feetech-sts3215-c018-30-kg-cm-12v-servo-8711
- Structured JSON: https://www.xirkit.io/products/feetech-sts3215-c018-30-kg-cm-12v-servo-8711/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Actuator type | smart_servo |
| Gearbox | 345:1 |
| Rated torque | 0.981 N·m |
| Peak torque | 2.942 N·m |
| No-load speed | 45 rpm |
| Rated voltage | 14 V |
| Rated current | 0.9 A |
| Torque constant Kt | 1.079 N·m/A |
| Backlash | 0.5° |
| Encoder | 12-bit magnetic, 360° (4096 per turn, 0.088°) |
| Control interface | TTL |
| Control modes | position (servo mode), multi-turn position |
| Dimensions | 45.2 × 24.7 × 35 mm |
| Operating temperature | -10 to 60 °C |
| Certifications | RoHS |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| shop.wowrobo.com | 15.99 USD | in_stock | 2026-10-06 | https://shop.wowrobo.com/products/feetech-sts3215-servo-12v-30kg-high-torque-servo-for-so-arm100?variant=48037575033049 |
| aifitlab.com | 26 USD | in_stock | 2026-10-06 | https://aifitlab.com/products/feetech-sts3215-servo-motor?variant=43455639584904 |

## FAQ

**What voltage powers the Feetech STS3215-C018 30 kg·cm 12V Servo?**

Supply range 4–14 V.

**How much does the Feetech STS3215-C018 30 kg·cm 12V Servo cost?**

From $15.99 at shop.wowrobo.com (2 supplier offers tracked). Prices are observed unit prices before tax and shipping.

**What are the Feetech STS3215-C018 30 kg·cm 12V Servo dimensions?**

45.2 × 24.7 × 35 mm. A STEP model is available for enclosure fit checks.

**Where does this Feetech STS3215-C018 30 kg·cm 12V Servo data come from?**

Every value in this record is traced to a source — 3 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.

## Sources

- [Feetech STS3215-C018 30 kg·cm 12V Servo datasheet](https://www.feetechrc.com/Data/feetechrc/upload/file/20260622/6391772519923113075854851.pdf)
- [shop.wowrobo.com listing](https://shop.wowrobo.com/products/feetech-sts3215-servo-12v-30kg-high-torque-servo-for-so-arm100?variant=48037575033049)
- [aifitlab.com listing](https://aifitlab.com/products/feetech-sts3215-servo-motor?variant=43455639584904)

## Part graph

### Alternatives (by use case)

- [ROBOTIS DYNAMIXEL XL330-M077-T](https://www.xirkit.io/products/robotis-dynamixel-xl330-m077-t-1a93) — Both serve robot joints and actuation — check the trade-offs; $15.99 vs $27.49
- [Waveshare ST3215 Servo 30 kg·cm 12 V](https://www.xirkit.io/products/waveshare-st3215-servo-30-kg-cm-12-v-250d) — Both serve robot joints and actuation — a direct substitute; $15.99 vs $21.99
- [Feetech STS3215-C046 14.4 kg·cm Servo](https://www.xirkit.io/products/feetech-sts3215-c046-14-4-kg-cm-servo-3afb) — Both serve robot joints and actuation — check the trade-offs; $15.99 vs $20
- [Waveshare ST3020 Servo 25 kg·cm 12 V](https://www.xirkit.io/products/waveshare-st3020-servo-25-kg-cm-12-v-3bb1) — Both serve robot joints and actuation — check the trade-offs; $15.99 vs $19.99
- [Feetech STS3215-C044 27.4 kg·cm Servo](https://www.xirkit.io/products/feetech-sts3215-c044-27-4-kg-cm-servo-911c) — Both serve robot joints and actuation — check the trade-offs; $15.99 vs $20
- [Waveshare SC15 Servo 15 kg·cm 6 V](https://www.xirkit.io/products/waveshare-sc15-servo-15-kg-cm-6-v-a32f) — Both serve robot joints and actuation — check the trade-offs; $15.99 vs $17.99
- [ROBOTIS DYNAMIXEL XL330-M288-T](https://www.xirkit.io/products/robotis-dynamixel-xl330-m288-t-db1e) — Both serve robot joints and actuation — check the trade-offs; $15.99 vs $27.49
- [Waveshare SC09 Micro Bus Servo 2.3 kg·cm](https://www.xirkit.io/products/waveshare-sc09-micro-bus-servo-2-3-kg-cm-f518) — Both serve robot joints and actuation — check the trade-offs; $15.99 vs $8.99

### Variants

- [Feetech STS3215-C001 19.5 kg·cm Servo](https://www.xirkit.io/products/feetech-sts3215-c001-19-5-kg-cm-servo-796d) — Same STS3215 body, 1:345 gearing and TTL protocol; C018 is the 12 V version (30 kg·cm stall, 4–14 V) — the 7.4 V C001 trips over-voltage above 8 V, so do not mix them on one supply