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ABMA STD 21.2 88th Edition, January 1, 1988
Complete Document
Active, Most Current
Thrust Needle Roller And Cage Assemblies and Thrust Washers Inch Design
Includes all amendments and changes through Stabilization Notice (No longer revised / updated) , 2010
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This standard for inch thrust needle roller and cage assemblies and thrust washers covers:

Identification Code

Symbols and Nomenclature

Boundary Dimensions

Tolerances

Mounting Practice

All thrust needle roller and cage assemblies and thrust washers listed in this standard are not necessarily available. For availability, consult bearing manufacturers. Other applicable standards should be consulted for tolerance definitions, gaging practices and methods of evaluating load ratings.

This standard only covers external dimensions. Functional interchangeability between different makes of standard thrust needle roller and cage assemblies and thrust washers of the same size may depend on bearing features which are not standardized. Hence, the substitution of one make of a standard bearing for another should only be made after careful comparison of their characteristics and consideration of the requirements of the particular application.