ZeroErr eRob70F Harmonic Rotary Actuator (100:1)
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.
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 |
Who makes it
Need a different shaft, connector, firmware or enclosure, or a price at 1,000 units? Maglev takes the catalog part to the factory and comes back with a custom version and one fixed price.
Landed cost in the US
Total US duty on this part by where it is made (2026-10-29). Mexico shown before USMCA preference; qualifying goods enter duty free. Your factory choice, not the shipping port, sets the origin.
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Compliance
| HTS classification | 8501.31.40.00 typical, not a ruling |
|---|---|
| NDAA | unknown |
| Blue UAS | unknown |
| FCC | n/a |
| Notes | Torque/mass figures from Maglev research CN009 transcription of this page (2026-10-06); the 2026-10-29 fetch rendered labels but not table values. |
Equivalents from other makers
Sources
- https://jp.zeroerr.com/rotary_actuators/erob70f48 V, 19-bit output encoder, interfaces (opened 2026-10-29)
Record confidence: VERIFIED. VERIFIED means the maker's own documents; REPORTED means a credible third party; UNVERIFIED means a single weak source. Anything we could not confirm says unknown.