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Tapered roller bearing number formulation

The basic number indicates general information about a bearing such as its fundamental type, boundary dimensions, series number, bore diameter code and contact angle. The supplementary code derive from profixes and suffixes which indicate a bearing’s related specifications.

Nomenclature-Metric Tapered Roller Bearings

Note: Metric tapered roller bearings follow ISO0355-1977 and ANSI/ABMA standard 19.1-1987, which is similar to the system used for inch tapered roller bearings ANSI/ABMA standard 19.2-1994.

Nomenclature - Inch Tapered Roller Bearings

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