28BYJ-48 supports and pulleys

thingiverse

Here you have some thing that can help you to make projects with the popular 28BYJ-48 stepper motor. There are two supports, one to be used in a horizontal surface and other for a vertical surface. To hold the other end of the belt I included two ball bearing supports, one with a long screw that can be used to adjust the belt tension. MT2 5 or 6 mm belts can be used. There are also 30 and 15 teeth pulleys that fit well to this motor. You will need some tiny washers, I usually use a piece of copper wire around the screw. The ball bearings are 5mm internal diameter and 10 mm external diameter. The screws that hold the ball bearings are #10, 1” long, the screw used to adjust the belt is a #6. Motors are held in place using small 1/8” screws if you thread the holes or you can use self tapping screws.