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.
astm a27 assn std 1st material response or mil-s-15083,grade 70-36 mil spec 2nd material response overall material document and classification, steel uns j03501 or steel uns j03504 overall material