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.
115.0 millimeters nominal overall outside diameter, 20.0 millimeters nominal overall width, 75.0 millimeters nominal bore diameter, abec no.1 standard tolerance designation