# RobStride 02 QDD Actuator

> RobStride 02 is a 48 V quasi-direct-drive joint actuator: 6 N·m rated (at 100 rpm) and 17 N·m peak through a 7.75:1 planetary reducer, 410 rpm no-load, 7 A rated / 23 A peak phase current, torque constant 1.22 N·m/Arms, 14-bit absolute encoders, CAN 2.0 at 1 Mbps with RobStride, CANopen and MIT protocols. 24–60 V, 380 g, Ø78.5 × 41.5 mm.

- Manufacturer: RobStride
- Part number: RS02
- Category: Actuators
- Canonical page: https://www.xirkit.io/products/robstride-02-qdd-actuator-8a4d
- Pinout: https://www.xirkit.io/products/robstride-02-qdd-actuator-8a4d/pinout
- Structured JSON: https://www.xirkit.io/products/robstride-02-qdd-actuator-8a4d/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Actuator type | qdd |
| Gearbox | planetary 7.75:1 |
| Rated torque | 6 N·m |
| Peak torque | 17 N·m |
| Rated speed | 100 rpm |
| No-load speed | 410 rpm |
| Rated voltage | 48 V |
| Rated current | 7 A |
| Torque constant Kt | 1.22 N·m/A |
| Encoder | dual magnetic, 14-bit absolute |
| Control interface | CAN |
| Control modes | operation control (MIT-style), current, speed, position (CSP), position (PP) |
| Dimensions | 78.5 × 78.5 × 41.5 mm |
| Operating temperature | -20 to 50 °C |

## Pinout (4 pins, 0 with electrical limits)

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| V+ | XT30PB(2+2)-M · 1 | power in | — | power_in | — | — | — | — | — | — | — |
| V- | XT30PB(2+2)-M · 2 | ground | — | ground | — | — | — | — | — | — | — |
| CAN_L | XT30PB(2+2)-M · 3 | signal | — | can_l | — | — | — | — | — | — | — |
| CAN_H | XT30PB(2+2)-M · 4 | signal | — | can_h | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| www.seeedstudio.com | 145 USD | in_stock | 2026-10-06 | https://www.seeedstudio.com/Robostride-02-Actuator-p-6665.html |

## FAQ

**What voltage powers the RobStride 02 QDD Actuator?**

Supply range 48–48 V.

**How much does the RobStride 02 QDD Actuator cost?**

From $145 at www.seeedstudio.com. Prices are observed unit prices before tax and shipping.

**What are the RobStride 02 QDD Actuator dimensions?**

78.5 × 78.5 × 41.5 mm. A STEP model is available for enclosure fit checks.

**Where does this RobStride 02 QDD Actuator data come from?**

Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.

## Sources

- [RobStride 02 QDD Actuator datasheet](https://raw.githubusercontent.com/RobStride/Product_Information/main/Product%20Literature/RS02/RS02User%20Manual260713.pdf)
- [www.seeedstudio.com listing](https://www.seeedstudio.com/Robostride-02-Actuator-p-6665.html)

## Part graph

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