3D bearing 22*26*7 application reference gear box

This is a practical experiment of 3D printed bearing, https://www.printables.com/model/441865-3d-diy-gro

Please refer to photo for assembly instruction. Chassis require a large print area, at least 300x300. 

Shut with machine screw:

10-32 x 2-½"

12-24 x 1"