This brushed DC gearmotor is available in high- and low-power versions in a number of gear ratios. Integrated quadrature encoders are also available on certain gear ratios, including just the motor portion by itself (i.e. no gearbox).
|Gear Ratio||No-Load |
@ 6 V
|Stall Torque |
@ 6 V
|Stall Current |
@ 6 V
|1:1||9800 RPM||2 oz-in||6 A||motor without gearbox|
|5600 RPM||1 oz-in||2.2 A||motor without gearbox|
|4.4:1||2220 RPM||8 oz-in||6 A||25Dx48L mm HP|
|1280 RPM||5 oz-in||2.2 A||25Dx48L mm|
|9.7:1||1010 RPM||17 oz-in||6 A||25Dx48L mm HP||25Dx48L mm HP|
|580 RPM||11 oz-in||2.2 A||25Dx48L mm||25Dx48L mm|
|20.4:1||480 RPM||36 oz-in||6 A||25Dx50L mm HP|
|275 RPM||24 oz-in||2.2 A||25Dx50L mm|
|34:1||285 RPM||60 oz-in||6 A||25Dx52L mm HP||25Dx52L mm HP|
|165 RPM||40 oz-in||2.2 A||25Dx52L mm||25Dx52L mm|
|47:1||210 RPM||80 oz-in||6 A||25Dx52L mm HP||25Dx52L mm HP|
|120 RPM||50 oz-in||2.2 A||25Dx52L mm||25Dx52L mm|
|75:1||130 RPM||130 oz-in||6 A||25Dx54L mm HP||25Dx54L mm HP|
|75 RPM||85 oz-in||2.2 A||25Dx54L mm||25Dx54L mm|
|99:1||100 RPM||160 oz-in||6 A||25Dx54L mm HP|
|57 RPM||110 oz-in||2.2 A||25Dx54L mm|
|172:1||57 RPM||260 oz-in||6 A||25Dx56L mm HP|
|33 RPM||170 oz-in||2.2 A||25Dx56L mm||25Dx56L mm|
|227:1||25 RPM||220 oz-in||2.2 A||25Dx56L mm|
|378:1||15 RPM||250 oz-in||2.2 A||25Dx58L mm|
|499:1||12 RPM||300 oz-in||2.2 A||25Dx58L mm|
Note: At some of the higher gear ratios, these motors can generate enough torque to damage themselves. Any torque greater than about 250 oz-in (18 kg-cm) is likely to damage the gearbox, so they recommend that you avoid stalling the 172:1 HP, 227:1, 378:1, and 499:1 versions of these motors at 6 V.
These 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, though they can begin rotating at voltages as low as 1 V. Higher voltages could start negatively affecting the life of the motor.
Details for item #1571
Exact gear ratio: ``(22×22×24) / (12×10×10) =bb(9.68:1)``
These gearmotors have output shafts with a diameter of 4 mm. The Pololu universal aluminum mounting hub for 4mm shafts can be used to mount Pololu's larger Pololu wheels (60mm-, 70mm-, 80mm-, and 90mm-diameter) or custom wheels and mechanisms to the gearmotor’s output shaft (see the left picture below). These are the same type of motors used in the Wild Thumper all-terrain chassis, and the gearbox’s output shaft works directly with the 120mm-diameter Wild Thumper wheels.
The face plate has two mounting holes threaded for M3 screws. You can use Pololu's custom-designed 25D mm metal gearmotor bracket (shown in the picture below) to mount the gearmotor to your project via these mounting holes and the screws that come with the bracket.
|Pololu 25D mm gearmotor with bracket.|
The diagram below shows the dimensions (in mm) of the 25D mm line of gearmotors. The value of
L is shown in the table below.
Selecting the Right Gearmotor
Pololu offer a wide selection of metal gearmotors that offer different combinations of speed and torque. Pololu's metal gearmotor comparison table can help you find the motor that best meets your project’s requirements.
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Documentation and Resources:
- The Maker Revolution
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We deliver Australia-wide with these options:
- $3 for Small Items (3-7 days, not tracked, only available on selected small items)
- $6.95 for Standard Post (2-4 days, tracked)
- $8.95 for Express Post (Overnight for Australia Post Next Day Network, tracked)
- Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)
International Orders - the following rates are for New Zealand and will vary for other countries:
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- $16.50 for Express International (2-5 days, tracked)
If you order lots of gear, the postage amount might increment based on the weight of your order.
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