Pololu 298:1 Micro-Metal-Gearmotor

Pololu 298:1 Micro-Metal-Gearmotor
Hersteller: Pololu
Hersteller-Nr: 1094
Flikto-Nr: flik.to/1766

This gear-motor is a miniature (0.94" x 0.39" x 0.47"), high-quality, low-current motor with 297.92:1 metal gearbox, similar to Sanyo’s popular 12 mm gear-motors. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft.

Key specs at 6 V: 45 RPM and 30 mA free-run, 40 oz-in (2.9 kg-cm) and 0.36 A stall.

These tiny brushed DC gearmotors are intended for use at 6 V, though 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 (rotation can start at voltages as low as 0.5 V). Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor. The micro metal gearmotors are available in a wide range of gear ratios—from 5:1 up to 1000:1—and offer a choice between three different motors: high-power (HP), medium-power (MP), and standard. With the exception of the 1000:1 gear ratio versions, all of the micro metal gearmotors have the same physical dimensions, so one version can be easily swapped for another if your design requirements change. Please see the micro metal gearmotor comparison table for detailed specifications of all our micro metal gearmotors. This dynamically-sortable table can help you find the gearmotor that offers the best blend of speed, torque, and current-draw for your particular application.

Details for item #1094

Exact gear ratio: 25×34×37×35×3812×9×10×13×10297.92:1

Gearmotor Dimensions

In terms of size, these gearmotors are very similar to Sanyo’s popular 12 mm NA4S DC gearmotors, and gearmotors with this form factor are occasionally referred to as N20 motors. The versions with carbon brushes (HPCB) have slightly different terminal and end-cap dimensions than the versions with precious metal brushes, but all of the other dimensions are identical.


Size: 10 × 12 × 26 mm1
Weight: 9.5 g
Shaft diameter: 3 mm2

General specifications

Gear ratio: 297.92:1
Free-run speed @ 6V: 45 rpm
Free-run current @ 6V: 40 mA
Stall current @ 6V: 360 mA
Stall torque @ 6V: 40 oz·in
Extended motor shaft?: N
Motor type: 0.36A stall @ 6V


1. Output shaft adds 9 mm to the 26 mm length.
2. D shaft.