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.
0.166 inches minimum and 0.174 inches maximum mounting hole diameter, round, unthreaded, counterbored mounting hole type, aluminum alloy overall material, 3.125 inches nominal aperture diameter, 4.250 inches nominal outside diameter