# CubeMars RO100 KV55 Frameless Outrunner Torque Motor

![CubeMars RO100 KV55 Frameless Outrunner Torque Motor](https://parts.trymaglev.com/img/mo-cubemars-ro100-kv55.webp)

Large 21-pole-pair frameless outrunner for quasi-direct-drive leg joints; Standard 113.5 x 36.2 mm / 710 g, Lite 108.3 x 28 mm / 525 g.

- Maglev ID: mo-cubemars-ro100-kv55
- Brand: CubeMars
- MPN: RO100 KV55 (Standard with Hall / Lite)
- Category: motors / Frameless BLDC Torque Motors
- Origin: CN (maker HQ, factory not confirmed)
- Maker: CubeMars (Sanrui Intelligent / T-Motor group) (brand, CN)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 8501.31.40.00 (typical)
- MOQ: 1 · Lead time: unknown
- Confidence: VERIFIED

## Price
- 1+: $156.90 (list, 2026-10-30, https://store.cubemars.com/products/ro100; Lite without hall)
- 1+: $171.90 (list, 2026-10-30, https://store.cubemars.com/products/ro100; Standard with hall)

## Specifications
- Peak torque: 12 Nm
- Continuous torque: 4 Nm rated
- Outer diameter: 113.5 mm
- Axial length: 36.2 mm
- Voltage: 48 V
- Mass: 710 g
- KV: 55 rpm/V
- Rated current: 20 A
- Peak current: 62 A

## Links
- Product: https://www.cubemars.com/product/ro100-kv55-standard-with-hall-frameless-torque-motor.html
- Datasheet: none
- CAD: https://www.cubemars.com/product/ro100-kv55-standard-with-hall-frameless-torque-motor.html

## Works with
- ODrive S1 Single-Axis BLDC Controller (mo-odrive-s1)
- moteus r4.11 Brushless Servo Controller (mo-moteus-r4-11)

## Sources
- https://www.cubemars.com/product/ro60-kv115-standard-with-hall-frameless-torque-motor.html (series comparison table: rated/peak torque, current, mass, diameter x length)
- https://store.cubemars.com/products/ro100.js (USD price and variant availability (Shopify product JSON))