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.
aviation ground power unit (ag-pu) (including electrical dc 28 v aat 700 amps maximum; ac 115-230 v, 30kv at 400 hz max; ac 110, 60hz at 500 w max; hydraulic 3,300 lbs at 15 gpm max; pneudraulic - 60 lb pm at 40 psi max end item identification