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ANSI ABMA 12.1-1992 (S2020)

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Instrument Ball Bearings Metric Design

(Stabilized 2020)




This standard covers the characteristics that define metric design instrument ball bearings, their boundary dimensions, tolerances, internal clearances, classification for selective assembly, and recommended practices for gaging, friction torque determination, load rating, operational life prediction and yield rate limitation.

The standard applies only to the size ranges covered by Paragraph 4, Boundary Dimensions.