because cheap asian factories make cheap asian bearings that aren't even abec1 rated. atleast you know that abec1 bearings have been tested and rated, without that you don't know what you're getting.
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It's "Dr. _paralyzed_" actually. Not like with a PhD, but Doctor like in Dr. Pepper.
Well I know what the ABEC scale is it is a scale of how presicely the bearing manufactured. I saw two the other day that used an ABEC 5, one was Medusa and the other I don't remember. Castle and a few others are ABEC 1. Who made (makes?) the Castle 36mm models? I just wouldn't use a cheap bearing like that in a motor that spins in excess of 50K.