A 3D printed ball bearing made with PETG is a low-friction component created using a 3D printer and PETG filament. Here's a breakdown:

• Material: PETG (Polyethylene Terephthalate Glycol) is a common 3D printing filament known for its durability and heat resistance compared to standard PLA filament.
• Function: It mimics a traditional ball bearing, allowing smooth rotation between parts with minimal friction.
• Construction: It typically consists of two or more 3D-printed parts that form a housing with a smooth raceway. Steel or ceramic balls are often used within this raceway to enable rotation.

Pros:

• Customization: 3D printing allows for the creation of ball bearings with specific sizes and designs for unique applications.
• Low-cost prototyping: A great option for creating functional prototypes for testing purposes.

Cons:

• Limited load capacity: Compared to metal bearings, 3D-printed PETG bearings may not handle high loads or heavy use.
• Wear and tear: PETG can wear down over time, especially under continuous use.