Introducing a 3D-printable bearing design. This model is engineered for easy "Print in Place" use, which means it can be printed without additional supports and is ready to be used right out of the printer. The design focuses on minimizing friction by optimizing tolerances between the 50 mm outer diameter (D) and 25 mm inner diameter (d), enabling smooth rotation. The bearing includes two types of ball bodies to facilitate efficient movement. It may be necessary to spin the bearing a few times after printing to ensure that it rotates freely.

To ensure proper adhesion during printing, it's essential to thoroughly clean the print bed. The ball bodies have a small contact area on the print bed. If not properly cleaned, this could lead to print failure. However, with good adhesion on the first layer, the print will progress smoothly.

Specifications:

• Outer diameter (D): 50 mm
• Inner diameter (d): 25 mm
• Width (B): 10mm

Note: I've also uploaded another smaller bearing (D=25mm; d=10mm).