Need a power yet compact worm gear motor? Why is worm gear so special? Check this wiki out: Worm Drive.
" Unlike with ordinary gear trains, the direction of transmission (input shaft vs output shaft) is not reversible when using large reduction ratios, due to the greater friction involved between the worm and worm-wheel, when usually a single start (one spiral) worm is used. This can be an advantage when it is desired to eliminate any possibility of the output driving the input."
In other words, it is difficult to push your load (example, your robot) if the motor is not power or rotate.
This is 12V rated worm gear DC brush motor with gear ratio of 40:1.
Features and Spec:
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