Are bearings standard?

Levels of Precision - Choose Wisely: How Fast Your BearingsAug 24, 2015 — ISO has an equivalent standard (ISO 492) for bearing tolerances that corresponds to the ABEC ratings as follows: normal class 6x (tightest), 6, 5, 

Standard Bearing Sizes - ThomasnetRoller and ball bearings are available in different standard sizes. Rolling element bearings are produced in standard inch and metric sizes and are based upon the standard hole system. This means that the bearing bore is the determining size and the shaft is machined to fitBearing number | Basic Bearing Knowledge | Koyo BearingsBearing numbers of standard bearings corresponding to JIS B 1512 "rolling bearing boundary dimensions" are prescribed in JIS B 1513. As well as these 

Tolerances and tolerance classes for bearings | Basic BearingJump to Tables 7-4 Tolerances for measuring instrument ball bearings — (These JIS standards are based on ISO standards.) Bearing tolerances are 

Rolling Element Bearing Standards - ASTM InternationalASTM's rolling element bearing standards provide the specifications and test methods pertinent to the design, property, and performance requirements of the Bearing Tolerances and Precision Levels | AST BearingsThese classes are defined in ABMA standard 20 – Radial Bearings of Ball, Cylindrical Roller, and Spherical Roller Types and ABMA standards 12.1 and 12.2 – 

Standard bearings - JESA Bearing - JESA Bearing SolutionsJESA has a vast assortment of standard ball bearings in order to cover a great many different applications. Designed and developed by Swiss engineers, they are 1. ISO Dimensional system and bearing numbers - NSKFor standard radial ball bearings, the width series symbol is omitted and the bearing number is expressed by 4 digits. Also, it is common practice to omit the width 

Ball Bearings ABEC Standard Tolerances Data - EngineersBall Bearings ABEC Standard Tolerances Data. The following are Annular Bearing Engineers Committee (ABEC) for ball bearings quality classes. Applications 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). Due to these factors, an ABEC 3 classified bearing could perform better than an ABEC 7 bearing