75:1 Metal Gearmotor 25Dx54L mm (Low Power)

This gearmotor uses a motor with extra-strong magnets and a 75:1 metal gearbox to deliver a lot of power in a relatively small package. These units have a 0.315"-long, 4 mm-diameter D-shaped output shaft. 75 RPM and 80 mA free-run, 85 oz-in (6.1 kg-cm) and 2.2 A stall

AUD$ 25.95

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Our Code: MEC-30130


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-, 80mm -diameter) or custom wheels and mechanisms to the gearmotor’s output shaft (see the left picture below).

We also stock Pololu's 25D Metal Gearmotor Bracket Pair that fits these motors.

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.

The diagram below shows the dimensions (in mm) of the 25D mm line of gearmotors. The value of 'L' is 21mm for this motor.



Size: 25D x 52L mm
Weight: 100g
Shaft diameter: 4 mm


General specifications

Gear ratio: 75:1
Free-run speed @ 6V: 75 rpm
Free-run current @ 6V: 80 mA
Stall current @ 6V: 2200 mA
Stall torque @ 6V: 6.1kg/cm


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