

100:1 Micro Metal Gearmotor MP
This gearmotor is a miniature (0.94" x 0.39" x 0.47") brushed DC 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: 220 RPM and 40 mA free-run, 19 oz-in (1.4 kg-cm) and 0.7 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. A more basic comparison table is available below.
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.
Motor Type | Stall Current @ 6 V | No-Load Speed @ 6 V | Stall Torque @ 6 V | ![]() Gearbox Shaft Only | ![]() Gearbox & Motor Shafts |
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high-power (HP) |
1600 mA | 6000 RPM | 2 oz-in | 5:1 micro HP | |
3000 RPM | 4 oz-in | 10:1 micro HP | 10:1 micro HP | ||
1000 RPM | 9 oz-in | 30:1 micro HP | 30:1 micro HP | ||
625 RPM | 15 oz-in | 50:1 micro HP | 50:1 micro HP | ||
400 RPM | 22 oz-in | 75:1 micro HP | 75:1 micro HP | ||
320 RPM | 30 oz-in | 100:1 micro HP | 100:1 micro HP | ||
200 RPM | 40 oz-in | 150:1 micro HP | |||
140 RPM | 50 oz-in | 210:1 micro HP | |||
120 RPM | 60 oz-in | 250:1 micro HP | |||
100 RPM | 70 oz-in | 298:1 micro HP | 298:1 micro HP | ||
32 RPM | 125 oz-in | 1000:1 micro HP | |||
medium-power (MP) |
700 mA | 2200 RPM | 3 oz-in | 10:1 micro MP | |
730 RPM | 8 oz-in | 30:1 micro MP | |||
420 RPM | 13 oz-in | 50:1 micro MP | |||
290 RPM | 17 oz-in | 75:1 micro MP | |||
220 RPM | 19 oz-in | 100:1 micro MP | |||
150 RPM | 24 oz-in | 150:1 micro MP | |||
75 RPM | 46 oz-in | 298:1 micro MP | |||
low-power | 360 mA | 2500 RPM | 1 oz-in | 5:1 micro | |
1300 RPM | 2 oz-in | 10:1 micro | |||
440 RPM | 4 oz-in | 30:1 micro | 30:1 micro | ||
250 RPM | 7 oz-in | 50:1 micro | 50:1 micro | ||
170 RPM | 9 oz-in | 75:1 micro | |||
120 RPM | 12 oz-in | 100:1 micro | 100:1 micro | ||
85 RPM | 17 oz-in | 150:1 micro | |||
60 RPM | 27 oz-in | 210:1 micro | |||
50 RPM | 32 oz-in | 250:1 micro | |||
45 RPM | 40 oz-in | 298:1 micro | 298:1 micro | ||
14 RPM | 70 oz-in | 1000:1 micro |
Note: The 1000:1 gearmotors can generate enough torque to damage themselves. The stall torque values given for those two motors are theoretical, and we strongly recommend you avoid stalling them.
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Micro metal gearmotor dimensions (units in mm). |
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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). The gearmotor weighs approximately 0.35 oz (10 g). Versions with the extended motor shaft have a 1mm diameter round shaft that protrudes 4.5 mm from the rear of the motor, between the two motor terminals; this is not pictured in the above dimension diagram.
The gearbox on the 1000:1 and 1000:1 HP micro metal gearmotors is 12.5 mm long. All of the other micro metal gearmotors have 9mm-long gearboxes, as shown in the above dimension diagram.
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We also incorporate these motors into some of our products, including our 3pi robot and Zumo robot:
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We offer a wide selection of metal gearmotors that offer different combinations of speed and torque. Our metal gearmotor comparison table can help you find the motor that best meets your project’s requirements.
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Some of the Pololu metal gearmotors. |
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50:1 Micro Metal Gearmotor MP |
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Pololu Micro Metal Gearmotor Bracket Pair - Black |
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Pololu 42x19mm Wheel and Encoder Set |
Data sheet
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Miniature, 12V brush DC motor with metal gear and 15.25:1 gear ratio. It has a cross section of 10 × 12 mm, and the D-shaped output shaft with a length of 9 mm and a diameter of 3 mm. Pololu 4786
This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 9.96:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter.
Small, high power motor with 5: 1 metal gear, 12 V operating voltage, power consumption from 0.06 A to 0.75 A, speed 6800 RPM, maximum torque of 0.09 kg * cm, carbon brushes and double-sided shaft. Pololu 3047
No product available!
Pololu high power miniature motor with carbon brushes. 50:1 gear motor, shaft speed 420 rpm, torque 0,54kg*cm. The motor has an extended shaft, which makes it easy to attach the encoder. Pololu 2379
This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 297.92:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. This version also has a 4.5 × 1 mm extended motor shaft.
No product available!
1000:1 Micro Metal Gearmotor
This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 4.995:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. This version also has a 4.5 × 1 mm extended motor shaft.
A small medium-power motor with a 380: 1 metal gear, 6 V operating voltage, 0.04 A to 0.67 A power consumption, 57 RPM and a maximum torque of 3.6 kg * cm. Pololu 4792
No product available!
Small, high power motor with 1000: 1 metal gear, 12 V operating voltage, power consumption from 0.06 A to 0.75 A, speed 35 RPM, maximum torque of 10 kg * cm, carbon brushes with increased strength and double-sided shaft. Pololu 3057
No product available!
Small metal gear motor, 1000 RPM speed, 3V operating voltage. GA12-N20-0009
DC Micro motor module with metal gear with a gear ratio of 50:1. The motor is connected to the board containing the driver. DFRobot DFR0429
Small motor with metal gear and encoder, rotation speed 2000 RPM, operating voltage 6 V. GA46-N20E-0051
No product available!
A small motor with a metal gear ending with a shaft with M3 thread, rotation speed 60 RPM, operating voltage 6 V. GA1036-N20M-0054
No product available!
15:1 Micro Metal Gearmotor HP with Extended Motor Shaft
A small, high-power motor with a 380: 1 metal gear, 12 V operating voltage, 0.06 A to 0.75 A power consumption, 85 RPM, a maximum torque of 5 kg * cm and carbon brushes with increased durability. Pololu 4798
No product available!
No product available!
100:1 Micro Metal Gearmotor MP