What bearing possibilities?

[BrowserUk]

What methods are possible for "bearings" for a 120mm diameter x 50mm rim-driven, HUBLESS rotor?

Mass: ~128.5g
RPM: 2000-3000
Forces:
Radial: its own (well-balanced) mass x angular velocity.
Axial: ~500g in one direction.

Note: Besides the ludicrous costs, stuff like this is excluded because of weight.

Looking for ideas, possibilities...

 

[SwinnyGG]

There you go.

 

[Findork]

Hello. Have been reading this thread and I think that 120mm diameter ball bearing with 3mm balls is near limit speeds for bearing balls. At that 3000 rpm

 

[SwinnyGG]

3000 RPM @ 120mm diameter is like 3500 fpm or so. That's a high speed bearing, but not anywhere close to an impossible bearing. Should work fine at the prototype level. Mass production would require some refinement.