6003 Ball Bearing | 6003 Bearing - 17x35x10 08B-4 Metric Roller Chain ABEC 3 means that the

ABEC 3 means that the bearing has a micron deviation from a nominal of 20

Something that sets this 2062B24 sprocket apart from others is that it is Black Oxide Finished

Bushing Type: R2

10B38 sprockets with a stock bore comes with the standard 20 millimeter inside diameter hole with no key-way or set screws and can be easily machine bored to custom sizes

and precision sprocket with 28 hardened teeth that is manufactured to accept a S2 bushing

6003 Ball Bearing | 6003 Bearing - 17x35x10 08B-4 Metric Roller Chain ABEC 3 means that theThis 6003 ball bearing is a high precision premium quality deep groove 17x35x10 ball bearing made to ABEC 3 precision standards from AXIS. What sets this 6003 bearing apart from others is the ABEC 3 precision standard that this bearing is made to, the grade 10 balls used, and the superb electric motor quality rating (EMQ). ABEC 3 means that the bearing itself has a micron deviation from a nominal of 20. 000mm of 8 micrometers. The standard ABEC 1