34:1 Metal Gearmotor 25Dx52L mm
 

This cylindrical, 2.05" x 0.98" x 0.98" brushed DC gearmotor with a 34:1 metal gearbox is a
lower-current alternative to the HP version. These units have a 0.315"-long, 4 mm-diameter D-shaped output shaft.
This gearmotor is also available with an encoder.

Key specs at 6 V: 165 RPM and 80 mA free-run, 40 oz-in (2.9 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.

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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