By Tolerance Labs engineering team. Specs from the makers’ published data.
15 models: 0.01–5.17 N·m peak torque, 0.01–0.52 kg weight, 12–36 V supply voltage. Every model is below with its key specs and US price.
GB motors are housed outrunner gimbal motors with a hollow shaft, for gimbals, pods and light robot joints. They need an external driver.
| Model | Torque (rated) | Torque (peak / max) | Output speed | Supply voltage | Weight | Price |
|---|---|---|---|---|---|---|
| GB1105 | 0.01 N·m | 0.01 N·m | 850 rpm | 12 V | 0.01 kg | $52.90 |
| GB1806 | 0.03 N·m | 0.06 N·m | 800 rpm | 12 V | 0.02 kg | $48.90 |
| GB2205 | 0.04 N·m | 0.06 N·m | 792 rpm | 12 V | 0.022 kg | $49.90 |
| GB2806 | 0.06 N·m | 0.09 N·m | 950 rpm | 12 V | 0.045 kg | $49.90 |
| GB3506 | 0.09 N·m | 0.15 N·m | 467 rpm | 12 V | 0.058 kg | $56.90 |
| GB3510 | 0.11 N·m | 0.16 N·m | 363 rpm | 12 V | 0.076 kg | $60.90 |
| GB4315 | 0.28 N·m | 0.42 N·m | 238 rpm | 24 V | 0.161 kg | $64.90 |
| GB4310 | 0.2 N·m | 0.49 N·m | 504 rpm | 24 V | 0.112 kg | $63.90 |
| GB5210 | 0.46 N·m | 1.03 N·m | 360 rpm | 24 V | 0.178 kg | $66.90 |
| GB5215 | 0.76 N·m | 1.15 N·m | 221 rpm | 24 V | 0.18 kg | $81.90 |
| GB6010 | 0.8 N·m | 1.59 N·m | 294 rpm | 36 V | 0.242 kg | $81.90 |
| GB5225 | 1.26 N·m | 1.9 N·m | 221 rpm | 24 V | 0.372 kg | $86.90 |
| GB6025 | 1.77 N·m | 2.68 N·m | 504 rpm | 36 V | 0.478 kg | $102.90 |
| GB7215 | 1.2 N·m | 3.7 N·m | 354 rpm | 24 V | 0.39 kg | $101.90 |
| GB8115 | 1.1 N·m | 5.17 N·m | 954 rpm | 24 V | 0.518 kg | $143.90 |
Picks within the series
- Most torque: GB8115 (5.17 N·m peak)
- Most torque per kilogram: GB8115 (9.98 N·m/kg)
- Lightest: GB1105 (0.01 kg)
More
See everything from Steadywin, and the guides How to size a robot joint motor and Encoders for robot joints: type, placement and resolution. Size a joint with the joint torque calculator.