Episode 4 R2D2 Granite Earth Lazy Susan: polishing and replacing steel bearings

In this video I show how to remove the existing steel bearing, polish the ball races and replace the steel bearings with Delrin Acetal bearings.
Music by audionautix.com
License Link: creativecommon...
Some details about the parts:
McMaster Carr Part# 9614K57 Delrin® Acetal Resin Ball, 5/16" Diameter
Lazy Susan link: www.graniteear...
Autosol Aluminium Polish: autosol.com.au...

[@briandodds]

When I put back together after polishing, I added just a dab of white lithium grease about the same size as one ball and it got even quieter!

[@r2dtoob664]

I'll try that, thanks

[@khandam7709]

do you think PTFE (teflon) slippery bearings would make it even smoother? they are about 4x more expensive then delrin and a softer plastic, but there is not much weight on this bearing anyways? Also are these chinese bearings really using 5/16" balls? Seems like they would use a metric ball like 8mm? maybe you just used 5/16 because 8mm was hard to find?

[@rasjnda]

Does your bearing have a bearing race that separates the ball bearings from each other?

[@khandam7709]

what is diameter of this ring? looks to be 18"?

[@mharrisx]

why wouldn't the steel bearings work more smoothly than delrin?

[@r2dtoob664]

It's more a question of getting the bearing to run quietly, however my experience is that there's not a lot of difference in the sound between delrin and steel. I've yet to add the lithium grease per another comment. Thanks for the question 😊

[@khandam7709]

@@r2dtoob664 did you add lithium grease yet and did it work? do I really have to buy the delrin balls to make it spin smoother, or can I just polish the ring and use the original steel balls and still get the smooth rolling action?