Printable 608 bearing for push-and-spin stress balls, 20-minute fast print

Recently, the HelixCore – Push-and-Spin Stress Ball has been very popular, but I didn't have any 608 bearings on hand. Some I downloaded online were either too complex in design and difficult to print, or too simple and couldn't retain lubricant

So, I designed my own 608 bearing, which can be fast printed in 20 minutes (for 2) to assemble the HelixCore – Push-and-Spin Stress Ball

I removed all complex structures (as they were useless, wasted print time, and often led to print failures). It uses a 3-ring nested design (although two rings are easier to print, my actual use showed they couldn't retain lubricant). The middle ring has small holes designed to store oil (which has been proven effective through actual disassembly, see pictures, and I welcome your feedback)

I also used this bearing to make a few test spinner balls; they can spin, but the performance is definitely not as good as metal bearings.

After applying lubricant, it spins for about 5-8 seconds, allowing you to experience this very popular model without buying bearings!

Following my usual style, no supports are needed, it's very easy to print, and saves time.

Modeling and testing were not easy, I hope to get your likes, downloads, prints, and boosts, Thank you!