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Cracking the Radial Ball Bearing Nomenclature and Numbering System

July 23, 2015 by Christine Berlly

metric-ball-bearing-nomenclature-exampleNumbering systems and nomenclature used in the bearing industry can get confusing, particularly since there are a number of variations used. AST Bearings wants to be sure that you are able to find the right part quickly and efficiently, so we’ve created a guide to explain the process.

The boundary dimensions for certain series of bearings are defined in various standards, such as ABMA, JIS and ISO. In addition, most manufacturers have created their own numbering systems that are a combination of the actual part, or bearing, number and a series of codes that define additional specifications.

Interchanging bearing numbers between different numbering systems requires attention to detail and full knowledge of the codes that define the specifications. AST’s Engineers and Sales reps are experts with all numbering systems and can assist you with breaking down any bearing part number.

To assist you in understanding AST Bearings’ radial ball bearing nomenclature and numbering system, we have compiled a comprehensive whitepaper detailing these, which can be read by clicking here.

If you have any further questions regarding the nomenclature and numbering system (or anything bearing related!) our tribology specialists and mechanical/quality engineers are available to standing-by to assist you: contact us today.


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