AirsoftBB_Bearing

This is a model of a bearing with an inner diameter of 20 mm, an outer diameter of 40 mm, and a thickness of 10 mm.

For example, it can be used in a filament spool holder, allowing filament to be pulled with minimal resistance.

To complete this model, you will need 10 6mm BB pellets in addition to the 3D printed parts. These BBs can usually be purchased for less than one dollar.

This is a very simple and inexpensive way to create a functional bearing—much easier and cheaper than buying a commercial one.

To assemble, place the 10 BB pellets between the inner and outer rings. Then, while adjusting their positions, insert the ball retainer to secure them.

Both the inner and outer rings have notches designed for inserting the BBs. Please insert the ball retainer through those notches.

I recently found that using PETG results in less resistance compared to PLA. I haven't tested it with ABS, but PETG is probably the better option. Although PLA has more resistance than PETG, it still works without any issues.