This is a 55x90x18 bearing.
The bearing use POM balls (Amazon, Aliexpress, ...).
Use the chain "solid plastic pom ball" to search on internet.
Internal diameter : 55mm
External diameter : 90mm
Width : 18mm
Balls : 12
POM ball diameter : 11.11mm
See the pictures
Printer Brand:Prusa
Printer:I3 MK3S
Rafts:No
Supports:No
Resolution:0,15mm
Infill:30%
Filament:Giantarm PETG Black & Silver
The author marked this model as their own original creation. Imported from Thingiverse.