The micro plastic gearmotor’s output shaft is compatible with this 14 mm wheels. We do not have any brackets because of this gearmotor, and it generally does not have any installation holes, but its small size makes it simple to fasten with tape or glue. On the other hand, since this gearmotor is usually nearly the same size as a 1/4″ fuse, it can be mounted using regular 1/4″ (6 mm) fuse clips.

Motor accessories

The following Micro Planetary Gear Motor 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 is flattened by 0.5 mm. The “D” part of the shaft is definitely 2.5 mm long. The engine measures 6 mm in diameter and 9 mm long, and the gearbox size, labeled “L” in the diagram below, depends on the gear ratio. The 26:1 gearbox can be 7.1 mm long, while the 136:1 option steps 9.4 mm. The motor leads include their suggestions pre-stripped and extend around 2 cm (0.8″) from the trunk of the motor.

Gearmotor dimensions

Since the gearmotor’s output shaft is nylon, there may be small variances in the diameter from unit to unit. These variations may cause press-suit attachments like our 14 mm wheel to fit loosely in some instances. If you experience a loose fit, you could try swapping tires or using a small dab of glue to greatly help hold the wheel on.