NACHI 07098/07196 bearing abec 9 Bearings - China abec 9 Bearings
ABEC scale - WikipediaThe ABEC scale is an industry accepted standard for the tolerances of a ball bearing. There are five classes from largest to smallest tolerances: 1, 3, 5, 7, 9Abec vs. Skate Rated™ - Support - Bones BearingsIn an application like this, an ABEC - 7 or 9 bearing rating may be appropriate.