DAY 57. Bearing

Print-in-Place Bearing (No Rolling Elements)

This is a fully 3D printed bearing designed without any rolling elements inside.
The entire mechanism prints as one piece and the inner ring spins freely right after printing.

Due to slightly increased tolerances, the inner ring has some side-to-side movement. While this makes it less precise as a traditional bearing, it still rotates smoothly and works surprisingly well as a fidget-style spinner.

This project was part of my daily 3D modeling and printing challenge, focusing on testing tolerances and simple mechanical concepts.

Features:

• Fully print-in-place design
• No rolling elements
• Spins freely after printing
• No supports required
• Simple tolerance-based mechanism

Print Settings:

• Material: PLA
• Layer height: 0.2 mm
• Infill: 15–20%
• Supports: No
• Orientation: Print flat as provided