GM25 Gear DC Motor - 30.8+L * 25 * 25mm / 4mm Output Shaft
Description:
These cylindrical brushed DC gear motors are available in high- and low-power versions with different gear ratios. They are can be used on many DIY projects.
Measurements:
Motor length: 30.8mm
Gear box length: 17 / 19 / 21 / 23 / 27
Shaft diameter: 4mm
Shaft length: 12.5
Technical Parameter:
| Gear Ratio | L(mm) | Free-run Speed@6V(rpm) | Stall torque@6V(kg.cm) | Stall current@6V(A) |
| 4.4:1 | 17 | 2220 | 0.227 | 6 |
| 4.4:1 | 17 | 1280 | 0.142 | 2.2 |
| 10:1 | 17 | 1010 | 0.482 | 6 |
| 10:1 | 17 | 580 | 0.312 | 2.2 |
| 21:1 | 19 | 480 | 1.02 | 6 |
| 21:1 | 19 | 275 | 0.68 | 2.2 |
| 34:1 | 21 | 285 | 1.7 | 6 |
| 34:1 | 21 | 165 | 1.13 | 2.2 |
| 47:1 | 21 | 210 | 2.268 | 6 |
| 47:1 | 21 | 120 | 1.418 | 2.2 |
| 75:1 | 23 | 130 | 3.686 | 6 |
| 75:1 | 23 | 75 | 2.41 | 2.2 |
| 378:1 | 27 | 15 | 7.09 | 2.2 |
| 499:1 | 27 | 12 | 8.51 | 2.2 |
