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.
mil-s-15083 mil spec single material response overall material document and classification, 21.000 inches nominal outside diameter, 18.750 inches nominal mounting bolt circle diameter, steel comp 60-30 overall material, 8 bolt circle hole quantity