Levels of Precision - Choose Wisely: How Fast Your BearingsAug 24, 2015 - ABEC includes five tolerances classes: 1, 3, 5, 7, and 9 with 1 being the widest and 9 the tightest. Thus, bearings with a higher ABEC rating The ABEC Myth | TransWorld SKATEboardingJul 13, 2002 - “It's silly that ABEC ratings are what skaters are looking at,” he says. “An ABEC 1 or 3 is all you really need on a skateboard. In skateboarding 
ABEC 3 | Enduro BearingsGrade 10 Chromium Steel Balls: High precision balls are within 10/1,000,000″ round, twice as round as the industry standard, at it's highest levelBall Bearings ABEC Standard Tolerances Data - EngineersApplications should only require ABEC 1 or ABEC 3 ball bearings. When highly precise position is required, ABEC 5 or ABEC 7 ball bearings should be What Are ABEC Ratings? | AST BearingsThere are five classes, going from widest tolerances to tightest: 1, 3, 5, 7, and 9. Higher ABEC classes provide better precision, efficiency, and greater speed ABEC scale - WikipediaThe ABEC scale is an industry accepted standard for the tolerances of a ball bearing.  Due to these factors, an ABEC 7 classified bearing could perform better than an ABEC 3 bearing. Bearings not conforming to at least ABEC 1 cannot be