Full specification
| Parameter | Value |
|---|---|
| Frame | Φ110 × 89.9 mm |
| Ratio | 22:1 · planetary |
| Rated torque | 100 N·m |
| Peak torque | 400 N·m |
| Weight | 2,700 g |
| Supply | 24 V nominal · 24–48 V supported |
| Encoder | Dual encoder (2EC) · single-turn absolute on the output side |
| Comms | CAN / CAN FD |
| Brake | None |
| Torque sensor | None |
Source: DAMIAO 2026 product selection catalogue, DM-J planetary series. Figures verified November 2026 — confirm the exact variant against the datasheet issued with your order.
When this is the right choice
- 400 N·m peak at 2.7 kg. Nothing else in the DM-J range comes close, and the number is achieved with a 22:1 planetary rather than a harmonic.
- Hip and heavy lift axes on a mid-size biped or a quadruped, where impact tolerance matters more than backlash.
- Lower cost than a comparable harmonic at this torque class.
- One controller, one CAN stack with the rest of the robot.
When it is the wrong choice
- Precision or force control. No torque sensor, and planetary backlash is present at the output.
- Power-off safety. No brake — a hip axis will not hold itself.
- Above ~400 N·m peak. That is waist-joint territory and a different drive type.
Alternatives at a similar level
- DAMIAO DM-J8520P — 50 N·m at 1,392 g — half the torque, half the mass
- Crabnova CE-RBV3-R120-MAX — 300–550 N·m with brake and a 600 N·m sensor, 4.20 kg
- Tongchuan TCHL-32 — 169–411 N·m harmonic at 3.30 kg with sensor option
- EYOU RHU40H-130 — 248–363 N·m at 5.82 kg with a Φ22 bore
Quote this model
Model, quantity and destination is enough to start — we come back with price, availability and the datasheet.
DM-J10422 FAQ
Planetary or harmonic for a hip?
Planetary if the robot falls, gets kicked or works outdoors: the drive survives shock a flexspline will not. Harmonic if the axis has to hold position precisely and quietly.
How do I hold the axis at power-off?
With a separate brake or a self-locking ratio. 22:1 alone will not hold a hip.
Is 400 N·m peak a real number?
It is the manufacturer’s instantaneous figure against a 100 N·m continuous rating. Treat it as an impact and acceleration allowance, not a working load.
How long does it take to ship?
Confirmed per order at quotation.
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