Metal Gearmotor Resources (20Dx44L mm)

Gearmotor Dimensions:

The face plate has two mounting holes threaded for M2.5 screws. You can use the custom-designed 20D metal gearmotor bracket (see below) to mount the gearmotor to your project via these mounting holes and the screws that come with the bracket.

	Pololu 20D mm gearmotor with bracket and hub.

Please note that the 20Dx44L mm line of gearmotors have output shafts with a diameter of 4 mm. The Pololu universal aluminum mounting hub for 4mm shafts can be used to mount custom wheels and mechanisms to the gearmotor’s output shaft.

The picture and table below shows the dimensions (in mm) of the 20D mm line of gearmotors.

	20D mm metal gearmotor dimensions (units in mm).

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. Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.

Pololu metal gearmotors arranged by size from left to right: micro, 100:1 and 24:1 mini, 35:1 mini, and 25:1 20Dx44L mm.

See the gearmotor comparison chart.