A comparatively flat rigid item, with or without a centrally located aperture, designed to hold an annular bearing or a sleeve bearing in a fitted inclosure. It must have drilled and/or tapped holes for mounting purposes. Excludes:end bell, electrical rotating equipment.
0.1250 inches nominal overall thickness, round, unthreaded mounting hole type, 0.1875 inches nominal mounting hole diameter, 2.2500 inches nominal outside diameter