ABMA 23.2:1988(R1999) pdf download

ABMA 23.2:1988(R1999) pdf download.Thrust Bearings of Tapered Roller Type – Inch Design
1. SCOPE
This standard for thrust bearings of the tapered roller type of inch design covers: Bearing Number and Type Identity Symbols and Nomenclature Boundary Dimensions Tolerances Mounting Dimensions All bearings and components in this standard are not necessarily available. For availability, con- sult bearing manufacturers. The following standards should be consulted for tolerance definitions, gaging practices and methods of evaluating load ratings: ANSI/AFBMA Terminology for Anti-Friction Standard 1 Ball and Roller Bearings and Parts ANSI/AFBMA Tolerance Definitions and Standard 4 Gaging Practices for Ball and Roller Bearings ANSI/AFBMA Load Ratings and Fatigue Life Standard 11 for Roller Bearings This standard only covers external dimensions. Functional interchangeability between different makes of standard bearings or components of the same size may depend on bearing features which are not standardized. Hence, the substi- tutionof one make of standard bearing for another should only be made after careful comparison of their characteristics and consideration of the requirements of the particular application.
2. BEARING NUMBER
and TYPE IDENTITY The bearing number identifies each tapered roller thrust bearing on the basis of complete dimen- sional interchangeability. This bearing number establishes a universal language for identifying tapered roller thrust bearings of inch design in order to facilitate communications between the user and the manufacturer. These bearing num- bers apply only to those tapered roller thrust bear- ings of inch design whose boundary dimensions and tolerances form this standard. The type identity is used in the bearing title and defines the particular type of tapered roller thrust bearing. This establishes a universal language for identifying the type or configuration of tapered roller thrust bearings of inch design to facilitate communications between the user and the man- ufacturer.