Special Features:

Banded, band extends beyond width of rings, one face of outer ring forms lip which extends down to meet shoulder on od of inner ring

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.