---
title: "RI80 V2.0 KV75 by CubeMars (T-Motor): specs, torque and price"
description: "Frameless + Driver actuator from CubeMars (T-Motor) (China). Peak torque 4.1 Nm, rated 1.4 Nm, weight 411 g, torque density 10 Nm/kg, price quote only."
canonical: https://getactuators.com/actuators/cubemars-ri80-v2-kv75
last-updated: 2026-09-26T20:29:50.000Z
---
# RI80 V2.0 KV75 by CubeMars (T-Motor)

> Frameless + Driver actuator from CubeMars (T-Motor) (China). Peak torque 4.1 Nm, rated 1.4 Nm, weight 411 g, torque density 10 Nm/kg, price quote only.

## Specifications

| Spec | Value |
| --- | --- |
| Category | Frameless + Driver |
| Peak torque | 4.1 Nm |
| Rated torque | 1.4 Nm |
| Max speed | 2430 rpm |
| Gear ratio | 1:1 |
| Weight | 411 g |
| Torque density | 10 Nm/kg |
| Price | quote only |
| Price per Nm | n/a |
| Backdrivable | yes |
| Backlash | n/a |
| Voltage | 12-48 V |
| Peak current | n/a |
| Communication | n/a |
| Control modes | n/a |
| Encoder | Optional Hall-sensor version; bare frameless kit (add own encoder) |
| Integrated driver | no |
| Availability | in production |
| Data status | verified against sources |

## Use cases

- robot arm
- cobot
- exoskeleton
- quadruped leg

## Notes

Motor. Frameless inrunner torque motor, dia 85 x 82 mm, delta winding, 8 pole pairs. Peak torque 4.1 Nm; rated torque 1.45 Nm; rated current 9.4A. max\_speed\_rpm is the rated speed at 48V. Kt not published. Needs external FOC driver.

## Sources

- <https://www.cubemars.com/product/ri80-v2-0-kv75-frameless-inrunner-torque-motor.html>
- <https://www.robotshop.com/products/cubemars-ri80-kv75-ri-series-frameless-inrunner-torque-motor>
- <https://www.directindustry.com/prod/cubemars/product-217143-2272307.html>

## Similar Frameless + Driver actuators

- [TQ-RoboDrive ILM85x26 (TQ-Systems (RoboDrive))](https://getactuators.com/actuators/tq-robodrive-ilm85x26): 14 Nm/kg
- [EC frameless 90 flat (260 W) (maxon)](https://getactuators.com/actuators/maxon-ec-frameless-90-flat-260w): 12 Nm/kg
- [RI60 KV120 (CubeMars (T-Motor))](https://getactuators.com/actuators/cubemars-ri60-kv120): 10.5 Nm/kg
- [R60 KV115 (CubeMars (T-Motor))](https://getactuators.com/actuators/cubemars-r60-kv115): 9.3 Nm/kg
- [iPower GM8112-80T (iPower Motor (iFlight))](https://getactuators.com/actuators/ipower-gm8112-80t): 2.1 Nm/kg

## Machine-readable

- JSON: https://getactuators.com/api/v1/actuators/cubemars-ri80-v2-kv75
- Catalog index for agents: https://getactuators.com/llms.txt