# CubeMars RI50 KV100 Frameless Inrunner Torque Motor

![CubeMars RI50 KV100 Frameless Inrunner Torque Motor](https://parts.trymaglev.com/img/mo-cubemars-ri50-kv100.webp)

Smallest mainstream CubeMars inrunner kit (54 mm) for wrist and finger-base joints; sold with or without Hall sensor.

- Maglev ID: mo-cubemars-ri50-kv100
- Brand: CubeMars
- MPN: RI50 KV100
- 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+: $61.90 (list, 2026-10-30, https://store.cubemars.com/products/ri50; without hall sensor)
- 1+: $76.90 (list, 2026-10-30, https://store.cubemars.com/products/ri50; with hall sensor)

## Specifications
- Peak torque: 1.67 Nm
- Continuous torque: 0.58 Nm rated
- Outer diameter: 54 mm
- Axial length: 27 mm
- Voltage: 24/36/48 V
- Mass: 180.8 g
- KV: 100 rpm/V
- Rated current: 4.8 A
- Peak current: 14.8 A

## Links
- Product: https://www.cubemars.com/product/ri50-kv100-frameless-inrunner-torque-motor.html
- Datasheet: none
- CAD: https://www.cubemars.com/product/ri50-kv100-frameless-inrunner-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/ri60-kv120-frameless-inrunner-torque-motor.html (series comparison table: rated/peak torque, current, mass, diameter x length)
- https://store.cubemars.com/products/ri50.js (USD price and variant availability (Shopify product JSON))