What an ABEC Rating Tells You About Skateboard BearingsJul 22, 2018 - Skateboard bearings often have an ABEC rating that indicates the level of precision and  ABEC 5 bearings are the norm in skateboardingLUCKY ABEC 5 Bearings : Skateboard  One (1) set of eight (8) Lucky Bearings Black Beauty Bearings from Lucky Bearings; Rating: Abec 5; Industry standard size: 608 with a 8mm core, 22mm outer 
ABEC scale - WikipediaThe ABEC scale is an industry accepted standard for the tolerances of a ball bearing. It was developed by the Annular Bearing Engineering Committee (ABEC) of the American Bearing Manufacturers Association (ABMA).  There are five classes from largest to smallest tolerances: 1, 3, 5, 7, 9Abec vs. Skate Rated™ - Support - Bones BearingsThe ABEC rating system includes grades 1,3,5,7, and 9. The higher the ABEC rating, the tighter the tolerances are, making the bearing a more precision partABEC 5 | Enduro BearingsGrade 5 Chromium Steel Balls. High precision balls are within 5/1,000,000″ round. These are military level specification, used for precision equipmentThe ABEC Myth | TransWorld SKATEboardingJul 13, 2002 - “Today, skateboard companies are selling bearings, mainly with ABEC 1, ABEC 3, ABEC 5, and ABEC 7 ratings.