Ansi Abma 8.2-1991 Pdf [best] Official

For example, if an engineer has an inch-series cylindrical roller bearing with a 4-inch bore, the standard would list a table showing the minimum and maximum internal clearance in micro-inches (or ten-thousandths of an inch) for Normal, C3, and C4 classes.

This standard provided the tolerance tables for . It defined how much "play" or looseness should exist between the rolling elements (balls or rollers) and the raceways when the bearing is not under load. ansi abma 8.2-1991 pdf