The Solarbotics GM12a, GM13a, GM14a, and GM18
gearmotors are compact, high-quality motors with metal gears.
The first three motors in the series are very similar to the Sanyo NA2S,
NA3S, and NA4S, respectively. The major difference is that these Sanyo
motor look-a-likes have brass front faceplates (not steel ones), and
they cost less!
These miniature metal gear motors have 3-mm
diameter output shafts that mate fairly well with any 1/8" hole
output device, including the Solarbotics RW2
high-traction rubber wheels. The brass faceplates have two mounting
holes threaded for 1.7 (dia) x 0.35 (mm/thd) x 4mm long screws
(M1.7 x 4 mm).
These small motors come in a variety
of gear ratios, have a compact size (1.14" x 0.39" x
0.47"), and weigh only 0.29 oz, making them a great choice for
small robot designs — and controling these low-current
motors is a snap with our micro dual serial
Specs for the mini metal gearmotors running at 6V:
|Note: These gearmotors do not come with
mounting hardware, instructions, or packaging. The brass
faceplate has two mounting holes threaded for 1.7 (dia) x
0.35 (mm/thd) x 4mm long screws (M1.7 x 4 mm).