Special Features:

Selected, classified and tested by the assembly mfr at his plant, internal clearance measured under a 5.5 lb load, end play measured under a 5.5 lb load

Properties:

A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. For items with faces specially ground for duplex mounting see bearing, ball, duplex. Excludes bearing, ball, airframe.