The micro plastic gearmotor’s output shaft is compatible with this 14 mm wheels. We don’t have any brackets for this gearmotor, and it generally does not possess any installation holes, but its compact size makes it easy to fasten with tape or glue. On the other hand, since this Micro Planetary Gear Motor gearmotor is nearly the same size as a 1/4″ fuse, it could be mounted using standard 1/4″ (6 mm) fuse clips.
Motor accessories
The following diagram shows the micro plastic gearmotor dimensions in mm. The planetary gearbox has a D-shaped plastic result shaft, which is 2 mm in diameter with a section that’s flattened by 0.5 mm. The “D” portion of the shaft is usually 2.5 mm long. The electric motor measures 6 mm in diameter and 9 mm in length, and the gearbox size, labeled “L” in the diagram below, depends on the apparatus ratio. The 26:1 gearbox is certainly 7.1 mm long, as the 136:1 option procedures 9.4 mm. The electric motor leads include their guidelines pre-stripped and extend around 2 cm (0.8″) from the back of the motor.
Gearmotor dimensions
Because the gearmotor’s output shaft is nylon, there can be small variances in the diameter from unit to unit. These variations might cause press-fit attachments like our 14 mm wheel to fit loosely occasionally. If you experience a loose fit, you could attempt swapping tires or using 
a little dab of glue to greatly help contain the wheel on.