AD Bearing Machine Co., Ltd

KOYO stb3372 Bearing

 

abec 7 Bearing

Abec vs. Skate Rated™ - Support - Bones BearingsThe answer is that "Bones Bearings are Skate Rated™ not ABEC rated." Bones®  The ABEC rating system includes grades 1,3,5,7, and 9. The higher the LUCKY ABEC-7 Bearings : Skateboard  I wish I had more closely inspected these bearings before skating with them. As you can see in the photo, one of the four bearings was not produced properly
The ABEC Myth | TransWorld SKATEboardingJul 13, 2002 - Most of what the skateboarding public knows about the ABEC rating of . between an ABEC 3 and an ABEC 7 bearing as subtle, and doesn't 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 
 

ABEC-7 Carbon Material 608zz Ball Bearing for Sliding Window Door Roller
ABEC-7 Carbon Material 608zz Ball Bearing for Sliding Window Door Roller
2.008 Inch | 51 Mill
Not Applicable
Miniature Ball Bearings 681zz, 682zz, 683zz, 684zz, 685zz, 686zz, 687zz, 688zz, 689zz ABEC-1, ABEC-3
Miniature Ball Bearings 681zz, 682zz, 683zz, 684zz, 685zz, 686zz, 687zz, 688zz, 689zz ABEC-1, ABEC-3
0 Inch | 0Millimeter
0.0
High Quality Miniature Deep Groove Ball Bearings 608, 608zz, 608 2RS ABEC-1 ABEC-3
High Quality Miniature Deep Groove Ball Bearings 608, 608zz, 608 2RS ABEC-1 ABEC-3
N/A
Single Row | Angular
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