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.
motor ac 2spd 440v 40/5 hp; motor ac 2spd 440v 50./6.25 hp end item identification, bearing, f.e. part name assigned by controlling agency, annual ball bearing for quiet operation application to submarine usage reference number differentiating characteristics, zzzy criticality code justification