100:1 Micro Metal Gearmotor

Overview

These tiny, high-quality motors are intended for use at 6 V. In general, these kinds of motors can run at voltages above and below this nominal voltage, so they should comfortably operate in the 3 – 9 V range. Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor. All of the micro metal gearmotors have the same physical dimensions, but they come in a wide range of gear ratios—from 5:1 up to 298:1—and let you choose between two different motors: high-power (HP) and standard. This means you can choose the version that has the ideal blend of speed, torque, and current-draw for your particular application.

Some versions of the gearmotors are sold with an additional 1mm-diameter output shaft that protrudes from the rear of the motor. This 4.5mm-long rear shaft rotates at the same speed as the input to the gearbox and offers a way to add a custom-built encoder to provide motor speed or position feedback.

Gearmotor Dimensions & Specs

This gearmotor is a miniature (0.94" x 0.39" x 0.47"), high-quality, low-current motor with 100:1 metal gearbox, similar to Sanyo’s popular 12 mm gearmotors. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft.

Key specs at 6 V: 120 RPM and 40 mA free-run, 10 oz-in (0.7 kg-cm) and 0.36 A stall.

Micro metal gearmotor dimensions (units in mm).
The gearbox has a long (0.365" or 9.27 mm), 3 mm-diameter D-shaped metal output shaft, and the brass faceplate has two mounting holes threaded for M1.6 screws (1.6 mm diameter, 0.35 mm thread pitch). It weighs approximately 0.35 oz (10 g).

Suitable brackets: Pololu Micro Metal Gearmotor Bracket