99:1 Metal Gearmotor 25Dx52L mm
99:1 Metal Gearmotor 25Dx52L mm
This cylindrical, 2.05" x 0.98" x 0.98" brushed DC gearmotor with a 99:1 metal gearbox. These units have a 0.315"-long, 4 mm-diameter D-shaped output shaft.
99:1 Metal Gearmotor 25Dx52L mm
Key specs at 6 V: 57 RPM and 80 mA free-run, 110 oz-in (7.9 kg-cm) and 2.2 A stall.
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.
Gearmotor Dimensions
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 our 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.
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The face plate has two mounting holes threaded for M3 screws. You can use our 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.
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Pololu 25D mm gearmotor with bracket. |
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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.
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Dimension diagram (in mm) for the 25D mm metal gearmotors. |
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