---
title: "mjbots moteus r4.11 specs"
description: "Frameless + Driver actuator from mjbots (United States). Peak torque n/a, rated n/a, weight 14 g, torque density n/a, price $94."
canonical: https://actuatorlist.com/actuators/mjbots-moteus-r4-11
last-updated: 2026-11-01T14:05:43.000Z
---
# moteus r4.11 by mjbots

> Frameless + Driver actuator from mjbots (United States). Peak torque n/a, rated n/a, weight 14 g, torque density n/a, price $94.

## Specifications

| Spec | Value |
| --- | --- |
| Category | Frameless + Driver |
| Peak torque | n/a |
| Rated torque | n/a |
| Max speed | n/a |
| Gear ratio | n/a |
| Weight | 14 g |
| Torque density | n/a |
| Price | $94 |
| Price per Nm | n/a |
| Backdrivable | n/a |
| Backlash | n/a |
| Voltage | 10-44 V |
| Peak current | 100 A |
| Communication | CAN-FD |
| Control modes | position, velocity, torque |
| Encoder | Onboard magnetic encoder (on-axis); STM32G4 MCU |
| Integrated driver | no |
| Availability | in production |
| Data status | Unverified catalog: confirm sources |

## Size a joint

- [Robot arm torque calculator](/tools/robot-arm-torque-calculator?L=0.4,0.35,0.12&m=1.2,0.8,0.3&a=0.014199999999999999,0.5,0&p=2): **30 N·m** at the shoulder with its 14.2 g at the elbow of a 2 kg-payload arm.
- [Humanoid robot actuators](/guides/humanoid-robot-actuators): **7 joints** with a static torque estimate and the catalog parts that reach it.

## Use cases

- quadruped leg
- robot arm
- diy qdd
- humanoid joint

## Notes

Driver/controller (not a motor; weight\_g is the board mass, 14.2g). Compact single-axis FOC controller designed for QDD/legged robots. 10-44V (up to 10S), 100A peak phase current, 12A uncooled / 32A cooled continuous, ~900W peak @30V. 5Mbps CAN-FD native. Board $94; developer kit ~$219. Widely used in low-cost QDD actuator builds.

## Sources

- [https://mjbots.com/products/moteus-r4-11](https://mjbots.com/products/moteus-r4-11)
- [https://github.com/mjbots/moteus/blob/main/README.md](https://github.com/mjbots/moteus/blob/main/README.md)
- [https://blog.mjbots.com/2022/05/11/moteus-r4-11/](https://blog.mjbots.com/2022/05/11/moteus-r4-11/)

## Similar Frameless + Driver actuators

- [TQ-RoboDrive ILM85x26 (TQ-Systems (RoboDrive))](https://actuatorlist.com/actuators/tq-robodrive-ilm85x26): 14 Nm/kg
- [EC frameless 90 flat (260 W) (maxon)](https://actuatorlist.com/actuators/maxon-ec-frameless-90-flat-260w): 12 Nm/kg
- [RI60 KV120 (CubeMars (T-Motor))](https://actuatorlist.com/actuators/cubemars-ri60-kv120): 10.5 Nm/kg
- [RI80 V2.0 KV75 (CubeMars (T-Motor))](https://actuatorlist.com/actuators/cubemars-ri80-v2-kv75): 10 Nm/kg
- [R60 KV115 (CubeMars (T-Motor))](https://actuatorlist.com/actuators/cubemars-r60-kv115): 9.3 Nm/kg

## Machine-readable

- JSON: https://actuatorlist.com/api/v1/actuators/mjbots-moteus-r4-11
- Catalog index for agents: https://actuatorlist.com/llms.txt