This gearmotor is a miniature (1.42" x 0.39" x 0.47"), high-quality motor with 100:1 metal gearbox, similar to Sanyo’s popular 12 mm gearmotors. These units have a 0.365"-long, D-shaped output shaft, and they are intended for 4.5-6 V operation.
Gearmotor Dimensions:
This motor has a long (0.365" or 9.27 mm, not 8mm as shown in the drawing below), D-shaped metal output shaft that almost perfectly matches the Solarbotics RW2 rubber wheel. The brass faceplate has two mounting holes threaded for M1.6 screws (1.6 mm diameter, 0.35 mm thread pitch).
Specs for the metal gearmotors running at 6 V:
| gearmotor |
gear ratio |
free-run RPM |
free-run current |
stall current |
stall torque |
weight |
| 100:1 Micro |
100:1 |
120 |
30 mA |
360 mA |
10 oz-in |
0.35 oz/10 g |
| 100:1 Mini |
100:1 |
140 |
90 mA |
800 mA |
15 oz-in |
0.8 oz/27 g |
| 30:1 Micro |
30:1 |
440 |
40 mA |
350 mA |
5.5 oz-in |
0.35 oz/10 g |
| 24:1 Mini |
24:1 |
410 |
70 mA |
420 mA |
3.8 oz-in |
0.8 oz/27 g |
