54mm Bore Spool Mount

I found that the spool holder on my A8 was lacking.... I was always worried that the filament would snap as the printer pulled on it. Seeing that I consistently get filament from the same supplier, and the spools always have the same bore diameter, I decided to just design this one part, that is sort of fixed as to the diameter of the spool. I had some 688ZZ bearings lying around, and decided to finally get around to making this. I am aware that it isn't extremely economical. So any suggestions