Precision N20 reduction motor with long pole, all metal gear reduction box, N20 motor tail with the feedback of revolution measurement, the length of the long pole reaches 50MM
It itself is used in the precision electronic lock in the precision deceleration motor, it needs precision control, so the motor tail with the feedback of revolution measurement

Type A1 geared motor: The stem is reversed (left-handed),          and the pitch P  0.5MM, reduction ratio  1: 306
Type A2 geared motor: The shaft is orthodontic (right-handed),   and the pitch P  0.35MM,    reduction ratio   1: 240

Model A1 geared motor parameters:
DC3V: The shaft speed is 58 revolutions, and the nut travels from beginning to end for about 90 seconds.
DC3.4V: The stem rotates at 66 revolutions, and the nut runs from the beginning to the end for about 80 seconds.
DC3.7V: The stem rotates at 73 revolutions, and the nut runs from the beginning to the end for about 75 seconds.

Model A2 geared motor:
DC3V: The stem rotates at 73 revolutions, and the nut travels from start to end for about 110 seconds.
DC3.4V: The stem rotates at 81 revolutions, and the nut travels from start to end for about 98 seconds.
DC3.7V: The stem rotates at 88 revolutions, and the nut travels from beginning to end for about 88 seconds.