# RobStride RS02 QDD Joint Actuator

![RobStride RS02 QDD Joint Actuator](https://parts.trymaglev.com/img/ac-robstride-rs02.webp)

Integrated planetary quasi-direct-drive joint (motor, 7.75:1 planetary, driver, dual encoders) for legged and humanoid builders who want the low-cost Chinese QDD class.

- Maglev ID: ac-robstride-rs02
- Brand: RobStride
- MPN: RS02
- Category: actuators / Integrated Joint Actuators
- Origin: CN (maker HQ, factory not confirmed)
- Maker: Beijing Lingzu Shidai Technology (RobStride, 北京灵足时代科技) (brand, CN)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 8501.31.40.00 (typical)
- MOQ: unknown · Lead time: unknown
- Confidence: VERIFIED

## Price
- 1+: ≈$98.45 (list, 2026-10-29, https://github.com/RobStride/Product_Information/blob/main/README.md; CNY 699 in RobStride catalog dated 2026-07-13; maker lists CNY; USD is a conversion at an assumed ~7.10 CNY/USD, not a USD quote)
- 1+: $195 (distributor, 2026-10-29, https://www.roboticscenter.ai/store/product/robstride-02; Reseller listing; backorder, 4-6 weeks; est. $66.46 US shipping extra)

## Specifications
- Peak torque: 17 N·m
- Rated torque: 7 N·m (with specified heat-sink plate)
- Gear ratio: 7.75:1 planetary
- Voltage: 48 V rated (24-60 V)
- Mass: 380 g
- Interface: CAN (RobStride CAN/CANopen protocol docs)

## Links
- Product: https://robstride.com/
- Datasheet: https://github.com/RobStride/Product_Information/blob/main/README.md
- CAD: none

## Equivalents
- CubeMars AK80-9 V3.0 KV100 Robotic Actuator (ac-cubemars-ak80-9-v3)
- Unitree GO-M8010-6 Joint Motor (ac-unitree-go-m8010-6)
- CubeMars AK70-10 KV100 Robotic Actuator (ac-cubemars-ak70-10)
- Synapticon ACTILINK-JD Circulo 8 Dynamic Actuator (ac-synapticon-actilink-jd-circulo-8)
- RobStride RS01 QDD Joint Actuator (ac-robstride-rs01)
- RobStride RS02-IP67 QDD Joint Actuator (ac-robstride-rs02-ip67)

## Sources
- https://github.com/RobStride/Product_Information/blob/main/README.md (specs + CNY catalog price (spec dated 2026-07-13))