Large Ball Bearing (Airsoft BB) Accurate & Smooth

There is large ballbearing what can be used with 32 ball slot cover protection ring or without by adding 13 balls more, balls are 6mm Airsoft BB but steel balls would be better, because common BB wear out pretty fast, some heavy bb's for snipers are better (little harder plastic)

Balls have 6,30mm space in model, so when printed (and sanded if needed) there is nearly optimal 6,05mm space to run smooth

I printed these just with common highquality settings with PETG and PLA, sanded a littlepit rings touching surface and then fitted balls with some lubricant

Screws can be any M3x10mm (no need nuts if used bottompart from files, it have tighter holes where screw locks on well)

Pls tell any opinions about this, where we should use these plastic bearings in future! :)

https://www.instagram.com/p/CGANgopDcaU/