# ZeroErr eRob70F Harmonic Rotary Actuator (100:1)

![ZeroErr eRob70F Harmonic Rotary Actuator (100:1)](https://parts.trymaglev.com/img/ac-zeroerr-erob70f-100.webp)

Integrated harmonic-drive joint (frameless motor, strain-wave gear, absolute encoders, EtherCAT/CANopen drive) for cobot-style arms needing near-zero backlash rather than backdrivability.

- Maglev ID: ac-zeroerr-erob70f-100
- Brand: ZeroErr
- MPN: eRob70F (14-100 configuration; full order code to confirm)
- Category: actuators / Integrated Joint Actuators
- Origin: CN (maker HQ, factory not confirmed)
- Maker: ZeroErr (零差云控（深圳）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
- No public price. Request a quote via POST /api/rfq or the order pad.

## Specifications
- Peak torque: 19 N·m start-stop; 35 N·m permissible momentary
- Rated torque: 5.4 N·m
- Gear ratio: 100:1 strain-wave
- Voltage: 48 V (±10%)
- Mass: 770 g
- Interface: EtherCAT / CANopen / Modbus (variant)
- Encoder: Output 19-bit absolute

## Links
- Product: https://jp.zeroerr.com/rotary_actuators/erob70f
- Datasheet: https://dl.zeroerr.cn/static/en/eRob%20CANopen%20and%20EtherCAT%20User%20Manual%20v1.11.pdf
- CAD: none

## Equivalents
- Harmonic Drive SHA20A Hollow-Shaft Rotary Actuator (CG, 1:100) (ac-harmonicdrive-sha20a-100)
- MyActuator RH-20-100 Hollow Harmonic Actuator (no brake) (ac-myactuator-rh-20-100-e-n-d)

## Sources
- https://jp.zeroerr.com/rotary_actuators/erob70f (48 V, 19-bit output encoder, interfaces (opened 2026-10-29))