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This compact, inexpensive plastic gearmotor (high-power brushed DC motor with a 120:1 reduction gearbox) is well suited for use in small robots. While intended for operation at 4.5 V, it should run comfortably in the 3 V to 6 V range.
These brushed DC gearmotors are compact and affordable — perfect for building a quick, miniature robot. They are intended for use at 4.5 V, though in general, these kinds of motors can run at voltages above and below this nominal voltage, so they should operate comfortably in the 3 V to 6 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 plastic gearbox is protected by a built-in safety clutch that will typically slip before the gear teeth can shear (typically when the load exceeds around 25 oz-in, or 2 kg-cm).
The mini plastic gearmotor family offers two output shaft orientations relative to the motor shaft (offset and 90°), two motor options (normal and high-power, or HP for short), and two gearbox options (120:1 and 180:1). The 120:1 versions are white and the 180:1 versions are yellow:
Some versions of these gearmotors are also available with an additional 1.5 mm-diameter output shaft that protrudes from the rear of the motor. This 5 mm-long rear shaft rotates at the same speed as the input to the gearbox and offers a way to add an encoder, such as magnetic encoder for mini plastic gearmotors, to provide motor speed or position feedback.
Please see the mini plastic gearmotor comparison table for detailed specifications of all our mini plastic 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.
The gearmotors in the table above all have a 3 mm diameter D-shaft output. These shafts are just like the ones on our micro metal gearmotors and are compatible with many Pololu wheels and our 3 mm universal mounting hubs. We also carry two low-power, 120:1 mini plastic gearmotors with 2 mm diameter spline outputs: 90° 2mm spline output and offset 2mm spline output. These gearmotors all work with our wide and tall mounting brackets for mini plastic gearmotors.
This item has a high-power motor (1250 mA stall current), a 120:1 gearbox, and a 3 mm diameter “D”-shaped output shaft that is perpendicular to the motor shaft. The 1.5 mm diameter motor shaft extends approximately 5 mm past the base of the motor.
Size: | 54.5 x 20 x 13.8 mm1 |
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Weight: | 19.5 g |
Shaft diameter: | 3 mm |
Shaft type: | 90° 3mm D |
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Typical operating voltage: | 4.5 V |
Gear ratio: | 120:1 |
Free-run speed @ 4.5V: | 150 rpm |
Free-run current @ 4.5V: | 130 mA |
Stall current @ 4.5V: | 1250 mA |
Stall torque @ 4.5V: | 25 oz·in2 |
Extended motor shaft?: | Y |
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
A set of two 60x8mm black Pololu wheels. Fits D-shaped shaft with a diameter of 3mm. Pololu 1420
A set of two 90x10mm white Pololu wheels. Fits D-shaped shaft with a diameter of 3mm. Pololu 1439
No product available!
A set of two 70x8mm white Pololu wheels. Fits D-shaped shaft with a diameter of 3mm. Pololu 1429
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A set of two 90x10mm black Pololu wheels. Fits D-shaped shaft with a diameter of 3mm. Pololu 1435
No product available!
A set of two 80x10mm red Pololu wheels. Fits D-shaped shaft with a diameter of 3mm. Pololu 1431
No product available!
A set of two Pololu wheels measuring 40x7mm in white. Fits D-shaped shaft with a diameter of 3mm. Pololu 1454
The kit uses a magnetic disc and hall effect sensors to provide 12 counts per revolution of the motor shaft. The sensors operate from 2.7 V to 18 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit. Compatible with all of the dual-shaft micro metal gearmotors we carry, including the HPCB versions. Pololu 3081
These tall brackets offer an easy and convenient mounting solution for mini plastic gearmotors.
These wide brackets offer an easy and convenient mounting solution for mini plastic gearmotors. The white plastic bracket clasps securely around the gearmotor, and the mounting tabs capture the nuts for easy installation. These brackets are sold in pairs, and each bracket comes with two M3 screws, two nuts, and a spacer.
The sensors operate from 2.7 V to 18 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit. This module is compatible with all of the Pololu dual-shaft mini plastic gearmotors. Pololu 1523
SmartDriveDuo MDDS30 - two-channel driver for DC motors
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Orange Pi Lite with Quad Core 1.2GHz 512MB DDR3 WiFi Mini PC
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Constant voltage transducer for pulse width - a self-assembly set
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The assembled and activated module is designed to control differently colored LEDs. AVTMOD02
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The Physical Computing Kit comes with: LabVIEW Home Bundle, a chipKIT WF32 microcontroller board, a Handy project box with sticker sheet plus an USB cable.
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Expansion board with LTE Cat-1/GSM/GPRS module designed to work with Raspberry Pi minicomputers. Waveshare A7600E Cat-1/GSM/GPRS HAT
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This compact, inexpensive plastic gearmotor (high-power brushed DC motor with a 120:1 reduction gearbox) is well suited for use in small robots. While intended for operation at 4.5 V, it should run comfortably in the 3 V to 6 V range.