"Tiny Orbo Replication" over 100% efficiency

[PaulLowrance]

ABEC number (odd integers only, higher is better) strictly represent (an average)
tolerance of all three dimensions of bearing.

Then that would make this the better choice of the two,
ABEC-5
http://www.vxb.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=kit7955&Store_Code=bearings

It says it's good to 100,000 rpm. Yeah, I could just imagine the "tiny orbo replication" spinning at 100,000 rpm, lol. Suuuurrrrre!      That would be something else. It's possible because it's only 1.1" OD.


I agree, lubrication seems very important. Since my application is for light forces on the bearing (hopefully), then a light weight lubrication is better. Is it difficult to remove the lubrication cap, remove the factory lubrication, and apply different lubrication?

[PaulLowrance]

I'm telling you right now, if I had a magnetic levitation bearing that was good to 20,000 rpm, it would be easy to make a self-runner!

[PaulLowrance]

It's amazing what difference between ball bearing and ball bearing. I just extracted another ball bearing from a CPU fan. This was from a massive fancy fan for a high end CPU. Well, at least in it's day. The ball bearing looks in good shape, but it seems that the lubrication is too thick because the "tiny orbo replication 2" can't even run. Although it's by far the quietest of all the ball bearings. I can hardly hear it. The best ball bearing so far is the noisiest, sounding like sand paper.

[PaulLowrance]

This pdf says adding grease or oil to ball bearings will make it go slower,

http://www.championballbearings.com/A_New_Ball_Bearing.pdf

A popular misconception is that by adding grease or oil to a ball bearing it will go faster
when in reality the opposite is true. It will slow it down. Why? To put it simply,
“kinematic viscosity.�

[PaulLowrance]

Well, the old dead 1st ball bearing was just revived by opening it up and removing all of the grease. Wow, it's as quiet as a church mouse, and is doing better than the best one so far. 

I think grease is best for heavier loads. In the case of the "tiny orbo replication," it's as light as a feather. So maybe no lubrication is best for lowest friction.