---
title: "Arc Series Cycloidal Joint Actuator by ATAR Robot: specs, torque and price"
description: "Cycloidal / Premium actuator from ATAR Robot (China). Peak torque 530 Nm, rated n/a, weight n/a, torque density n/a, price quote only."
canonical: https://getactuators.com/actuators/atar-arc-cycloidal-joint
last-updated: 2026-09-26T20:29:50.000Z
---
# Arc Series Cycloidal Joint Actuator by ATAR Robot

> Cycloidal / Premium actuator from ATAR Robot (China). Peak torque 530 Nm, rated n/a, weight n/a, torque density n/a, price quote only.

## Specifications

| Spec | Value |
| --- | --- |
| Category | Cycloidal / Premium |
| Peak torque | 530 Nm |
| Rated torque | n/a |
| Max speed | 100 rpm |
| Gear ratio | n/a |
| Weight | n/a |
| Torque density | n/a |
| Price | quote only |
| Price per Nm | n/a |
| Backdrivable | no |
| Backlash | 1 arcmin |
| Voltage | 24-72 V |
| Peak current | n/a |
| Communication | CAN-FD, EtherCAT |
| Control modes | position, velocity, torque |
| Encoder | dual encoder |
| Integrated driver | yes |
| Availability | in production |
| Data status | unverified |

## Use cases

- humanoid joint
- heavy arm
- robot arm

## Notes

Integrated cycloidal joint module line aimed at humanoids/heavy arms: self-developed cycloidal reducer + BLDC motor + driver + dual encoders in one unit. Series-level specs: rated torque range 3-150 N.m across sizes, max torque up to 530 N.m (used as peak here), 24-72V, rated speed 80-100 rpm, backlash and repeatability ~1 arcmin, withstands \>5x rated momentary overload, CAN-FD + EtherCAT. Per-model rated torque, weight and gear ratio are not published individually (this entry represents the series envelope) so those are null and verified is false. Low backdrivability by design. Quote/OEM pricing.

## Sources

- <https://www.atarrobot.com/cycloidal-robot/arc-serie/Arc-cycloidal-joint-actuators.html>
- <https://atarrobot.com/cycloidal-robot/>

## Similar Cycloidal / Premium actuators

- [RV-42N (RV-N cycloidal reducer) (Nabtesco)](https://getactuators.com/actuators/nabtesco-rv-42n): 327 Nm/kg
- [M107 Joint Motor (Unitree Robotics)](https://getactuators.com/actuators/unitree-m107): 189.5 Nm/kg
- [DM-J8009-2EC (DAMIAO (DMBots))](https://getactuators.com/actuators/damiao-dm-j8009-2ec): 44.6 Nm/kg
- [SCA QDD-Lite-NE30-36 (INNFOS (Mintasca))](https://getactuators.com/actuators/innfos-sca-qdd-lite-ne30-36): 43.1 Nm/kg
- [DM-J10010-2EC (DAMIAO (DMBots))](https://getactuators.com/actuators/damiao-dm-j10010-2ec): n/a

## Machine-readable

- JSON: https://getactuators.com/api/v1/actuators/atar-arc-cycloidal-joint
- Catalog index for agents: https://getactuators.com/llms.txt