This gearmotor uses a motor with extra-strong magnets and a 34:1 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 and include a 16 CPR encoder for motor speed feedback. This is a kit and requires some assembly.
Not currently available
Our Code: MEC-30105
The Encoders use custom made 8-pole magnets and 2 haff-effect sensors to provide 2 square waves, 90 degree out of phase with a total of 16 state changes per motor revolution.
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-, 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.
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.
The diagram below shows the dimensions (in mm) of the 25D mm line of gearmotors. The value of 'L' is 21mm for this motor.
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