By Tolerance Labs engineering team. Specs from the makers’ published data.
9 models: 0.15–8.5 N·m peak torque, 0.07–1.03 kg weight, 12–36 V supply voltage. Every model is below with its key specs and US price.
DD motors are direct-drive servo motors with an integrated driver and encoder, with no gearbox between the motor and the load.
| Model | Torque (rated) | Torque (peak / max) | Output speed | Supply voltage | Weight | Price |
|---|---|---|---|---|---|---|
| DD4006-7 | 0.09 N·m | 0.15 N·m | 467 rpm | 12 V | 0.07 kg | $147.90 |
| DD5010-10 | 0.2 N·m | 0.49 N·m | 504 rpm | 24 V | 0.134 kg | $151.90 |
| DD6015-6 | 0.65 N·m | 1.26 N·m | 264 rpm | 24 V | 0.251 kg | $186.90 |
| DD7010-11 | 0.8 N·m | 1.59 N·m | 294 rpm | 36 V | 0.261 kg | $210.90 |
| DD7010-2 | 0.8 N·m | 1.93 N·m | 618 rpm | 24 V | 0.261 kg | $210.90 |
| DD8015-2 | 1.2 N·m | 3.7 N·m | 354 rpm | 24 V | 0.418 kg | $224.90 |
| DD9015-4 | 1.26 N·m | 4.11 N·m | 372 rpm | 36 V | 0.534 kg | $201.90 |
| DD9015-1 | 1.1 N·m | 5.17 N·m | 954 rpm | 24 V | 0.534 kg | $201.90 |
| DD11025-3 | 4 N·m | 8.5 N·m | 168 rpm | 36 V | 1.03 kg | $318.90 |
Picks within the series
- Most torque: DD11025-3 (8.5 N·m peak)
- Most torque per kilogram: DD9015-1 (9.68 N·m/kg)
- Lightest: DD4006-7 (0.07 kg)
More
See everything from Steadywin, and the guides Backdrivability in robot joints and How to size a robot joint motor. Size a joint with the joint torque calculator.